/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:17:50,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:17:50,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:17:50,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:17:50,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:17:50,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:17:50,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:17:50,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:17:50,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:17:50,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:17:50,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:17:50,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:17:50,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:17:50,533 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:17:50,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:17:50,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:17:50,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:17:50,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:17:50,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:17:50,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:17:50,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:17:50,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:17:50,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:17:50,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:17:50,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:17:50,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:17:50,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:17:50,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:17:50,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:17:50,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:17:50,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:17:50,721 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:17:50,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39.c [2022-01-10 00:17:50,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caea430d/5f68ad63386b48eab22ccd301d969d81/FLAGef004519a [2022-01-10 00:17:51,242 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:17:51,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label39.c [2022-01-10 00:17:51,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caea430d/5f68ad63386b48eab22ccd301d969d81/FLAGef004519a [2022-01-10 00:17:51,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caea430d/5f68ad63386b48eab22ccd301d969d81 [2022-01-10 00:17:51,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:17:51,753 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:17:51,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:17:51,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:17:51,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:17:51,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:17:51" (1/1) ... [2022-01-10 00:17:51,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4010728a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:51, skipping insertion in model container [2022-01-10 00:17:51,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:17:51" (1/1) ... [2022-01-10 00:17:51,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:17:51,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:17:52,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label39.c[1583,1596] [2022-01-10 00:17:52,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:17:52,345 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:17:52,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label39.c[1583,1596] [2022-01-10 00:17:52,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:17:52,515 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:17:52,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52 WrapperNode [2022-01-10 00:17:52,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:17:52,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:17:52,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:17:52,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:17:52,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,663 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1758 [2022-01-10 00:17:52,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:17:52,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:17:52,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:17:52,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:17:52,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:17:52,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:17:52,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:17:52,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:17:52,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (1/1) ... [2022-01-10 00:17:52,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:17:52,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:17:52,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:17:52,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 00:17:52,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:17:52,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:17:52,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:17:52,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:17:52,893 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:17:52,894 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:17:54,629 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:17:54,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:17:54,638 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:17:54,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:54 BoogieIcfgContainer [2022-01-10 00:17:54,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:17:54,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:17:54,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:17:54,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:17:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:17:51" (1/3) ... [2022-01-10 00:17:54,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7380626e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:17:54, skipping insertion in model container [2022-01-10 00:17:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:52" (2/3) ... [2022-01-10 00:17:54,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7380626e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:17:54, skipping insertion in model container [2022-01-10 00:17:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:54" (3/3) ... [2022-01-10 00:17:54,645 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label39.c [2022-01-10 00:17:54,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:17:54,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:17:54,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:17:54,690 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 00:17:54,690 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:17:54,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:17:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 00:17:54,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:17:54,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:17:54,726 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:17:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:17:54,732 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2022-01-10 00:17:54,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:17:54,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168978612] [2022-01-10 00:17:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:17:54,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:17:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:17:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:17:54,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:17:54,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168978612] [2022-01-10 00:17:54,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168978612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:17:54,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:17:54,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:17:54,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205673894] [2022-01-10 00:17:54,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:17:54,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:17:54,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:17:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:17:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:17:54,874 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:17:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:17:56,737 INFO L93 Difference]: Finished difference Result 1154 states and 2106 transitions. [2022-01-10 00:17:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:17:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-01-10 00:17:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:17:56,753 INFO L225 Difference]: With dead ends: 1154 [2022-01-10 00:17:56,753 INFO L226 Difference]: Without dead ends: 665 [2022-01-10 00:17:56,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:17:56,758 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 310 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:17:56,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 383 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:17:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-01-10 00:17:56,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2022-01-10 00:17:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.4818731117824773) internal successors, (981), 662 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:17:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 981 transitions. [2022-01-10 00:17:56,805 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 981 transitions. Word has length 11 [2022-01-10 00:17:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:17:56,806 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 981 transitions. [2022-01-10 00:17:56,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:17:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 981 transitions. [2022-01-10 00:17:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 00:17:56,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:17:56,808 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:17:56,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:17:56,809 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:17:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:17:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1402996647, now seen corresponding path program 1 times [2022-01-10 00:17:56,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:17:56,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633278337] [2022-01-10 00:17:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:17:56,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:17:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:17:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:17:56,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:17:56,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633278337] [2022-01-10 00:17:56,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633278337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:17:56,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:17:56,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:17:56,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419031211] [2022-01-10 00:17:56,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:17:56,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:17:56,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:17:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:17:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:17:56,973 INFO L87 Difference]: Start difference. First operand 663 states and 981 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:17:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:17:58,223 INFO L93 Difference]: Finished difference Result 1624 states and 2315 transitions. [2022-01-10 00:17:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:17:58,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 00:17:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:17:58,236 INFO L225 Difference]: With dead ends: 1624 [2022-01-10 00:17:58,236 INFO L226 Difference]: Without dead ends: 963 [2022-01-10 00:17:58,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:17:58,238 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 237 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:17:58,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 337 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:17:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-01-10 00:17:58,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-01-10 00:17:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.362785862785863) internal successors, (1311), 962 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:17:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1311 transitions. [2022-01-10 00:17:58,258 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1311 transitions. Word has length 76 [2022-01-10 00:17:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:17:58,266 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1311 transitions. [2022-01-10 00:17:58,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:17:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1311 transitions. [2022-01-10 00:17:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 00:17:58,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:17:58,268 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:17:58,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:17:58,268 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:17:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:17:58,269 INFO L85 PathProgramCache]: Analyzing trace with hash -826018154, now seen corresponding path program 1 times [2022-01-10 00:17:58,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:17:58,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3261887] [2022-01-10 00:17:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:17:58,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:17:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:17:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:17:58,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:17:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3261887] [2022-01-10 00:17:58,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3261887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:17:58,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:17:58,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:17:58,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712161583] [2022-01-10 00:17:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:17:58,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:17:58,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:17:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:17:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:17:58,348 INFO L87 Difference]: Start difference. First operand 963 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:00,060 INFO L93 Difference]: Finished difference Result 2244 states and 3201 transitions. [2022-01-10 00:18:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:18:00,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 00:18:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:00,065 INFO L225 Difference]: With dead ends: 2244 [2022-01-10 00:18:00,065 INFO L226 Difference]: Without dead ends: 1582 [2022-01-10 00:18:00,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:18:00,067 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 363 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:00,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 362 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:18:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-01-10 00:18:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1266. [2022-01-10 00:18:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 1.3051383399209486) internal successors, (1651), 1265 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1651 transitions. [2022-01-10 00:18:00,085 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1651 transitions. Word has length 81 [2022-01-10 00:18:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:00,086 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 1651 transitions. [2022-01-10 00:18:00,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:00,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1651 transitions. [2022-01-10 00:18:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 00:18:00,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:00,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:00,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:18:00,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 19138934, now seen corresponding path program 1 times [2022-01-10 00:18:00,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:00,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220734044] [2022-01-10 00:18:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:00,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:18:00,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:00,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220734044] [2022-01-10 00:18:00,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220734044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:00,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:00,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:00,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415384521] [2022-01-10 00:18:00,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:00,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:00,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:00,192 INFO L87 Difference]: Start difference. First operand 1266 states and 1651 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:01,523 INFO L93 Difference]: Finished difference Result 3133 states and 4193 transitions. [2022-01-10 00:18:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 00:18:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:01,529 INFO L225 Difference]: With dead ends: 3133 [2022-01-10 00:18:01,529 INFO L226 Difference]: Without dead ends: 1869 [2022-01-10 00:18:01,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:01,544 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 333 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:01,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 614 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:18:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-01-10 00:18:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1869. [2022-01-10 00:18:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 1.2441113490364026) internal successors, (2324), 1868 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2324 transitions. [2022-01-10 00:18:01,573 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2324 transitions. Word has length 102 [2022-01-10 00:18:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:01,574 INFO L470 AbstractCegarLoop]: Abstraction has 1869 states and 2324 transitions. [2022-01-10 00:18:01,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:01,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2324 transitions. [2022-01-10 00:18:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-10 00:18:01,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:01,580 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:01,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:18:01,581 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash 459086406, now seen corresponding path program 1 times [2022-01-10 00:18:01,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:01,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273258609] [2022-01-10 00:18:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:01,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 00:18:01,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:01,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273258609] [2022-01-10 00:18:01,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273258609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:01,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:01,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:18:01,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751419673] [2022-01-10 00:18:01,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:01,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:01,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:01,713 INFO L87 Difference]: Start difference. First operand 1869 states and 2324 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:02,838 INFO L93 Difference]: Finished difference Result 5240 states and 6569 transitions. [2022-01-10 00:18:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:02,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 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 170 [2022-01-10 00:18:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:02,846 INFO L225 Difference]: With dead ends: 5240 [2022-01-10 00:18:02,846 INFO L226 Difference]: Without dead ends: 2775 [2022-01-10 00:18:02,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:02,867 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 257 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:02,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 333 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:18:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-01-10 00:18:02,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2771. [2022-01-10 00:18:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2770 states have (on average 1.151985559566787) internal successors, (3191), 2770 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 3191 transitions. [2022-01-10 00:18:02,946 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 3191 transitions. Word has length 170 [2022-01-10 00:18:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:02,947 INFO L470 AbstractCegarLoop]: Abstraction has 2771 states and 3191 transitions. [2022-01-10 00:18:02,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 3191 transitions. [2022-01-10 00:18:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-10 00:18:02,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:02,949 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:02,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:18:02,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:02,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1158360950, now seen corresponding path program 1 times [2022-01-10 00:18:02,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:02,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540583666] [2022-01-10 00:18:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:02,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:18:03,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540583666] [2022-01-10 00:18:03,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540583666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:03,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:03,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:03,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892785344] [2022-01-10 00:18:03,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:03,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:18:03,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:18:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:18:03,095 INFO L87 Difference]: Start difference. First operand 2771 states and 3191 transitions. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:05,064 INFO L93 Difference]: Finished difference Result 8252 states and 9471 transitions. [2022-01-10 00:18:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:18:05,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2022-01-10 00:18:05,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:05,077 INFO L225 Difference]: With dead ends: 8252 [2022-01-10 00:18:05,078 INFO L226 Difference]: Without dead ends: 5184 [2022-01-10 00:18:05,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:18:05,082 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 498 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:05,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 123 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:18:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2022-01-10 00:18:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4574. [2022-01-10 00:18:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 1.1550404548436475) internal successors, (5282), 4573 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 5282 transitions. [2022-01-10 00:18:05,148 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 5282 transitions. Word has length 244 [2022-01-10 00:18:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:05,149 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 5282 transitions. [2022-01-10 00:18:05,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 5282 transitions. [2022-01-10 00:18:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-01-10 00:18:05,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:05,151 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:05,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:18:05,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2063431207, now seen corresponding path program 1 times [2022-01-10 00:18:05,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:05,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910312535] [2022-01-10 00:18:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:05,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 00:18:05,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:05,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910312535] [2022-01-10 00:18:05,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910312535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:05,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:05,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:18:05,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449535865] [2022-01-10 00:18:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:05,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:05,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:05,261 INFO L87 Difference]: Start difference. First operand 4574 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:06,267 INFO L93 Difference]: Finished difference Result 8847 states and 10259 transitions. [2022-01-10 00:18:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:06,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 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 288 [2022-01-10 00:18:06,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:06,278 INFO L225 Difference]: With dead ends: 8847 [2022-01-10 00:18:06,279 INFO L226 Difference]: Without dead ends: 4574 [2022-01-10 00:18:06,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:06,285 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:06,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 305 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:18:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4574 states. [2022-01-10 00:18:06,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4574 to 4574. [2022-01-10 00:18:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 1.1546031051825936) internal successors, (5280), 4573 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 5280 transitions. [2022-01-10 00:18:06,341 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 5280 transitions. Word has length 288 [2022-01-10 00:18:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:06,342 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 5280 transitions. [2022-01-10 00:18:06,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 5280 transitions. [2022-01-10 00:18:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-01-10 00:18:06,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:06,345 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:06,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:18:06,345 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:06,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash 537781817, now seen corresponding path program 1 times [2022-01-10 00:18:06,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:06,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199801733] [2022-01-10 00:18:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:06,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:18:06,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:06,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199801733] [2022-01-10 00:18:06,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199801733] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:18:06,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326351698] [2022-01-10 00:18:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:06,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:18:06,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:18:06,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:18:06,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:18:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:06,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:18:06,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:18:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 00:18:07,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:18:07,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326351698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:07,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:18:07,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-01-10 00:18:07,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31863111] [2022-01-10 00:18:07,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:07,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:07,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:07,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:07,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:18:07,241 INFO L87 Difference]: Start difference. First operand 4574 states and 5280 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:08,207 INFO L93 Difference]: Finished difference Result 8848 states and 10260 transitions. [2022-01-10 00:18:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 362 [2022-01-10 00:18:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:08,218 INFO L225 Difference]: With dead ends: 8848 [2022-01-10 00:18:08,218 INFO L226 Difference]: Without dead ends: 4575 [2022-01-10 00:18:08,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:18:08,222 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 374 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:08,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 415 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:18:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2022-01-10 00:18:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 3971. [2022-01-10 00:18:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3971 states, 3970 states have (on average 1.1428211586901764) internal successors, (4537), 3970 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:08,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3971 states to 3971 states and 4537 transitions. [2022-01-10 00:18:08,307 INFO L78 Accepts]: Start accepts. Automaton has 3971 states and 4537 transitions. Word has length 362 [2022-01-10 00:18:08,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:08,308 INFO L470 AbstractCegarLoop]: Abstraction has 3971 states and 4537 transitions. [2022-01-10 00:18:08,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:08,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3971 states and 4537 transitions. [2022-01-10 00:18:08,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-01-10 00:18:08,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:08,312 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:08,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:18:08,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:18:08,528 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2044257679, now seen corresponding path program 1 times [2022-01-10 00:18:08,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:08,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117805170] [2022-01-10 00:18:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:08,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:18:08,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:08,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117805170] [2022-01-10 00:18:08,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117805170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:18:08,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422094483] [2022-01-10 00:18:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:08,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:18:08,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:18:08,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:18:08,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:18:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:08,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:18:08,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:18:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:18:09,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:18:09,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422094483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:09,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:18:09,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-01-10 00:18:09,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908928638] [2022-01-10 00:18:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:09,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:09,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:09,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:09,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:18:09,341 INFO L87 Difference]: Start difference. First operand 3971 states and 4537 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:10,431 INFO L93 Difference]: Finished difference Result 9445 states and 11013 transitions. [2022-01-10 00:18:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 368 [2022-01-10 00:18:10,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:10,445 INFO L225 Difference]: With dead ends: 9445 [2022-01-10 00:18:10,445 INFO L226 Difference]: Without dead ends: 5775 [2022-01-10 00:18:10,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 367 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 00:18:10,449 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 245 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:10,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 269 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:18:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2022-01-10 00:18:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 5769. [2022-01-10 00:18:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5768 states have (on average 1.1191054091539527) internal successors, (6455), 5768 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 6455 transitions. [2022-01-10 00:18:10,509 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 6455 transitions. Word has length 368 [2022-01-10 00:18:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:10,510 INFO L470 AbstractCegarLoop]: Abstraction has 5769 states and 6455 transitions. [2022-01-10 00:18:10,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 6455 transitions. [2022-01-10 00:18:10,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-01-10 00:18:10,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:10,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:10,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:18:10,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-10 00:18:10,730 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:10,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:10,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1706604912, now seen corresponding path program 1 times [2022-01-10 00:18:10,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:10,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127028016] [2022-01-10 00:18:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:10,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-01-10 00:18:10,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127028016] [2022-01-10 00:18:10,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127028016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:10,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:10,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:10,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646620116] [2022-01-10 00:18:10,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:10,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:18:10,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:10,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:18:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:18:10,956 INFO L87 Difference]: Start difference. First operand 5769 states and 6455 transitions. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:13,117 INFO L93 Difference]: Finished difference Result 13347 states and 15010 transitions. [2022-01-10 00:18:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:18:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 424 [2022-01-10 00:18:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:13,128 INFO L225 Difference]: With dead ends: 13347 [2022-01-10 00:18:13,128 INFO L226 Difference]: Without dead ends: 7580 [2022-01-10 00:18:13,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:18:13,133 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 476 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:13,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 122 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:18:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7580 states. [2022-01-10 00:18:13,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7580 to 5772. [2022-01-10 00:18:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 5771 states have (on average 1.1178305319701958) internal successors, (6451), 5771 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 6451 transitions. [2022-01-10 00:18:13,194 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 6451 transitions. Word has length 424 [2022-01-10 00:18:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:13,194 INFO L470 AbstractCegarLoop]: Abstraction has 5772 states and 6451 transitions. [2022-01-10 00:18:13,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 6451 transitions. [2022-01-10 00:18:13,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-01-10 00:18:13,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:13,196 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:13,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:18:13,197 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:13,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1137786087, now seen corresponding path program 1 times [2022-01-10 00:18:13,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:13,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383391188] [2022-01-10 00:18:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:13,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 00:18:13,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:13,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383391188] [2022-01-10 00:18:13,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383391188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:13,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:13,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:13,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543622346] [2022-01-10 00:18:13,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:13,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:13,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:13,375 INFO L87 Difference]: Start difference. First operand 5772 states and 6451 transitions. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:14,502 INFO L93 Difference]: Finished difference Result 13043 states and 14831 transitions. [2022-01-10 00:18:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:14,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 462 [2022-01-10 00:18:14,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:14,513 INFO L225 Difference]: With dead ends: 13043 [2022-01-10 00:18:14,513 INFO L226 Difference]: Without dead ends: 7572 [2022-01-10 00:18:14,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:14,519 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 249 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:14,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 567 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:18:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7572 states. [2022-01-10 00:18:14,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7572 to 7566. [2022-01-10 00:18:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7566 states, 7565 states have (on average 1.1068076668869795) internal successors, (8373), 7565 states have internal predecessors, (8373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7566 states to 7566 states and 8373 transitions. [2022-01-10 00:18:14,591 INFO L78 Accepts]: Start accepts. Automaton has 7566 states and 8373 transitions. Word has length 462 [2022-01-10 00:18:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:14,591 INFO L470 AbstractCegarLoop]: Abstraction has 7566 states and 8373 transitions. [2022-01-10 00:18:14,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 7566 states and 8373 transitions. [2022-01-10 00:18:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-01-10 00:18:14,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:14,594 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:14,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:18:14,595 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:14,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1559723376, now seen corresponding path program 1 times [2022-01-10 00:18:14,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:14,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160247605] [2022-01-10 00:18:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:14,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-01-10 00:18:14,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:14,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160247605] [2022-01-10 00:18:14,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160247605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:14,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:14,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:14,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420832154] [2022-01-10 00:18:14,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:14,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:14,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:14,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:14,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:14,726 INFO L87 Difference]: Start difference. First operand 7566 states and 8373 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:15,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:15,672 INFO L93 Difference]: Finished difference Result 17821 states and 19987 transitions. [2022-01-10 00:18:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:15,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 521 [2022-01-10 00:18:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:15,687 INFO L225 Difference]: With dead ends: 17821 [2022-01-10 00:18:15,687 INFO L226 Difference]: Without dead ends: 9958 [2022-01-10 00:18:15,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:15,695 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 249 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:15,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 304 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:18:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9958 states. [2022-01-10 00:18:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9958 to 6364. [2022-01-10 00:18:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6364 states, 6363 states have (on average 1.0936665095080937) internal successors, (6959), 6363 states have internal predecessors, (6959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6364 states to 6364 states and 6959 transitions. [2022-01-10 00:18:15,828 INFO L78 Accepts]: Start accepts. Automaton has 6364 states and 6959 transitions. Word has length 521 [2022-01-10 00:18:15,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:15,828 INFO L470 AbstractCegarLoop]: Abstraction has 6364 states and 6959 transitions. [2022-01-10 00:18:15,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6364 states and 6959 transitions. [2022-01-10 00:18:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2022-01-10 00:18:15,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:15,833 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:15,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:18:15,833 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:15,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:15,834 INFO L85 PathProgramCache]: Analyzing trace with hash 107270081, now seen corresponding path program 1 times [2022-01-10 00:18:15,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:15,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335337263] [2022-01-10 00:18:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:15,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-01-10 00:18:15,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335337263] [2022-01-10 00:18:15,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335337263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:15,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:15,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:15,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275291339] [2022-01-10 00:18:15,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:15,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:15,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:15,984 INFO L87 Difference]: Start difference. First operand 6364 states and 6959 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:17,090 INFO L93 Difference]: Finished difference Result 16924 states and 18582 transitions. [2022-01-10 00:18:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:17,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 578 [2022-01-10 00:18:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:17,104 INFO L225 Difference]: With dead ends: 16924 [2022-01-10 00:18:17,104 INFO L226 Difference]: Without dead ends: 10861 [2022-01-10 00:18:17,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:17,110 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 253 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:17,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 571 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:18:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10861 states. [2022-01-10 00:18:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10861 to 10852. [2022-01-10 00:18:17,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10852 states, 10851 states have (on average 1.081467145885172) internal successors, (11735), 10851 states have internal predecessors, (11735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10852 states to 10852 states and 11735 transitions. [2022-01-10 00:18:17,218 INFO L78 Accepts]: Start accepts. Automaton has 10852 states and 11735 transitions. Word has length 578 [2022-01-10 00:18:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:17,218 INFO L470 AbstractCegarLoop]: Abstraction has 10852 states and 11735 transitions. [2022-01-10 00:18:17,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 10852 states and 11735 transitions. [2022-01-10 00:18:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-01-10 00:18:17,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:17,224 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:17,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:18:17,224 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:17,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash -598694179, now seen corresponding path program 1 times [2022-01-10 00:18:17,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:17,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740601681] [2022-01-10 00:18:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:17,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-01-10 00:18:17,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:17,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740601681] [2022-01-10 00:18:17,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740601681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:17,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:17,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:17,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446078906] [2022-01-10 00:18:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:17,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:17,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:17,421 INFO L87 Difference]: Start difference. First operand 10852 states and 11735 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:18,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:18,282 INFO L93 Difference]: Finished difference Result 23794 states and 25820 transitions. [2022-01-10 00:18:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:18,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 585 [2022-01-10 00:18:18,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:18,299 INFO L225 Difference]: With dead ends: 23794 [2022-01-10 00:18:18,299 INFO L226 Difference]: Without dead ends: 13243 [2022-01-10 00:18:18,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:18,308 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 301 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:18,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 421 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 00:18:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13243 states. [2022-01-10 00:18:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13243 to 11150. [2022-01-10 00:18:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11150 states, 11149 states have (on average 1.0841331061081712) internal successors, (12087), 11149 states have internal predecessors, (12087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11150 states to 11150 states and 12087 transitions. [2022-01-10 00:18:18,425 INFO L78 Accepts]: Start accepts. Automaton has 11150 states and 12087 transitions. Word has length 585 [2022-01-10 00:18:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:18,425 INFO L470 AbstractCegarLoop]: Abstraction has 11150 states and 12087 transitions. [2022-01-10 00:18:18,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11150 states and 12087 transitions. [2022-01-10 00:18:18,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-01-10 00:18:18,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:18,431 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:18,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:18:18,431 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1612031298, now seen corresponding path program 1 times [2022-01-10 00:18:18,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:18,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790942529] [2022-01-10 00:18:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:18,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-01-10 00:18:18,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:18,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790942529] [2022-01-10 00:18:18,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790942529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:18,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:18,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:18,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023602153] [2022-01-10 00:18:18,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:18,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:18,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:18,560 INFO L87 Difference]: Start difference. First operand 11150 states and 12087 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:19,570 INFO L93 Difference]: Finished difference Result 22296 states and 24174 transitions. [2022-01-10 00:18:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 586 [2022-01-10 00:18:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:19,583 INFO L225 Difference]: With dead ends: 22296 [2022-01-10 00:18:19,583 INFO L226 Difference]: Without dead ends: 11447 [2022-01-10 00:18:19,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:19,588 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 440 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:19,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 70 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:18:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11447 states. [2022-01-10 00:18:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11447 to 11148. [2022-01-10 00:18:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11148 states, 11147 states have (on average 1.0839687808378935) internal successors, (12083), 11147 states have internal predecessors, (12083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11148 states to 11148 states and 12083 transitions. [2022-01-10 00:18:19,682 INFO L78 Accepts]: Start accepts. Automaton has 11148 states and 12083 transitions. Word has length 586 [2022-01-10 00:18:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:19,683 INFO L470 AbstractCegarLoop]: Abstraction has 11148 states and 12083 transitions. [2022-01-10 00:18:19,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 11148 states and 12083 transitions. [2022-01-10 00:18:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2022-01-10 00:18:19,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:19,688 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:19,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:18:19,688 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1377966362, now seen corresponding path program 1 times [2022-01-10 00:18:19,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:19,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457827365] [2022-01-10 00:18:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:19,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 00:18:19,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:19,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457827365] [2022-01-10 00:18:19,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457827365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:19,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:19,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:19,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852206136] [2022-01-10 00:18:19,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:19,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:19,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:19,849 INFO L87 Difference]: Start difference. First operand 11148 states and 12083 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:21,017 INFO L93 Difference]: Finished difference Result 27984 states and 30401 transitions. [2022-01-10 00:18:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 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 608 [2022-01-10 00:18:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:21,033 INFO L225 Difference]: With dead ends: 27984 [2022-01-10 00:18:21,033 INFO L226 Difference]: Without dead ends: 15044 [2022-01-10 00:18:21,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:21,042 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 114 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:21,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 531 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:18:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15044 states. [2022-01-10 00:18:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15044 to 12947. [2022-01-10 00:18:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12947 states, 12946 states have (on average 1.0804109377413873) internal successors, (13987), 12946 states have internal predecessors, (13987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12947 states to 12947 states and 13987 transitions. [2022-01-10 00:18:21,251 INFO L78 Accepts]: Start accepts. Automaton has 12947 states and 13987 transitions. Word has length 608 [2022-01-10 00:18:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:21,252 INFO L470 AbstractCegarLoop]: Abstraction has 12947 states and 13987 transitions. [2022-01-10 00:18:21,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 12947 states and 13987 transitions. [2022-01-10 00:18:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-01-10 00:18:21,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:21,258 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:21,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:18:21,258 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1722353900, now seen corresponding path program 1 times [2022-01-10 00:18:21,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:21,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733157890] [2022-01-10 00:18:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:21,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-01-10 00:18:21,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:21,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733157890] [2022-01-10 00:18:21,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733157890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:21,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:21,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:21,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314401537] [2022-01-10 00:18:21,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:21,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:21,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:21,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:21,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:21,436 INFO L87 Difference]: Start difference. First operand 12947 states and 13987 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:22,561 INFO L93 Difference]: Finished difference Result 30698 states and 33115 transitions. [2022-01-10 00:18:22,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:22,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 620 [2022-01-10 00:18:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:22,577 INFO L225 Difference]: With dead ends: 30698 [2022-01-10 00:18:22,577 INFO L226 Difference]: Without dead ends: 18052 [2022-01-10 00:18:22,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:22,586 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 334 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:22,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 502 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:18:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18052 states. [2022-01-10 00:18:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18052 to 17141. [2022-01-10 00:18:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17141 states, 17140 states have (on average 1.0752042007001168) internal successors, (18429), 17140 states have internal predecessors, (18429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17141 states to 17141 states and 18429 transitions. [2022-01-10 00:18:22,857 INFO L78 Accepts]: Start accepts. Automaton has 17141 states and 18429 transitions. Word has length 620 [2022-01-10 00:18:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:22,857 INFO L470 AbstractCegarLoop]: Abstraction has 17141 states and 18429 transitions. [2022-01-10 00:18:22,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:22,858 INFO L276 IsEmpty]: Start isEmpty. Operand 17141 states and 18429 transitions. [2022-01-10 00:18:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-01-10 00:18:22,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:22,866 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:22,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 00:18:22,866 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:22,867 INFO L85 PathProgramCache]: Analyzing trace with hash -463695305, now seen corresponding path program 1 times [2022-01-10 00:18:22,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:22,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543071797] [2022-01-10 00:18:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:22,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-01-10 00:18:23,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:23,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543071797] [2022-01-10 00:18:23,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543071797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:23,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:23,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:23,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218968294] [2022-01-10 00:18:23,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:23,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:23,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:23,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:23,085 INFO L87 Difference]: Start difference. First operand 17141 states and 18429 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:24,126 INFO L93 Difference]: Finished difference Result 33987 states and 36563 transitions. [2022-01-10 00:18:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:24,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 625 [2022-01-10 00:18:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:24,143 INFO L225 Difference]: With dead ends: 33987 [2022-01-10 00:18:24,143 INFO L226 Difference]: Without dead ends: 17147 [2022-01-10 00:18:24,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:24,154 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 292 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:24,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 128 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:18:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17147 states. [2022-01-10 00:18:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17147 to 17141. [2022-01-10 00:18:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17141 states, 17140 states have (on average 1.0682030338389732) internal successors, (18309), 17140 states have internal predecessors, (18309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17141 states to 17141 states and 18309 transitions. [2022-01-10 00:18:24,307 INFO L78 Accepts]: Start accepts. Automaton has 17141 states and 18309 transitions. Word has length 625 [2022-01-10 00:18:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:24,307 INFO L470 AbstractCegarLoop]: Abstraction has 17141 states and 18309 transitions. [2022-01-10 00:18:24,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 17141 states and 18309 transitions. [2022-01-10 00:18:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2022-01-10 00:18:24,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:24,313 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:24,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 00:18:24,314 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1950406002, now seen corresponding path program 1 times [2022-01-10 00:18:24,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:24,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450813045] [2022-01-10 00:18:24,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:24,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 00:18:24,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:24,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450813045] [2022-01-10 00:18:24,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450813045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:24,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:24,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:24,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146085961] [2022-01-10 00:18:24,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:24,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:24,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:24,543 INFO L87 Difference]: Start difference. First operand 17141 states and 18309 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:25,739 INFO L93 Difference]: Finished difference Result 37880 states and 40418 transitions. [2022-01-10 00:18:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:25,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 627 [2022-01-10 00:18:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:25,761 INFO L225 Difference]: With dead ends: 37880 [2022-01-10 00:18:25,761 INFO L226 Difference]: Without dead ends: 21040 [2022-01-10 00:18:25,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:25,773 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 227 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:25,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 559 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:18:25,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21040 states. [2022-01-10 00:18:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21040 to 20733. [2022-01-10 00:18:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20733 states, 20732 states have (on average 1.0616438356164384) internal successors, (22010), 20732 states have internal predecessors, (22010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20733 states to 20733 states and 22010 transitions. [2022-01-10 00:18:25,963 INFO L78 Accepts]: Start accepts. Automaton has 20733 states and 22010 transitions. Word has length 627 [2022-01-10 00:18:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:25,964 INFO L470 AbstractCegarLoop]: Abstraction has 20733 states and 22010 transitions. [2022-01-10 00:18:25,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 20733 states and 22010 transitions. [2022-01-10 00:18:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-01-10 00:18:25,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:25,971 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:25,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 00:18:25,971 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1877712878, now seen corresponding path program 1 times [2022-01-10 00:18:25,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:25,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742415222] [2022-01-10 00:18:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:25,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-01-10 00:18:26,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:26,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742415222] [2022-01-10 00:18:26,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742415222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:26,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:26,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:26,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881917151] [2022-01-10 00:18:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:26,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:26,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:26,147 INFO L87 Difference]: Start difference. First operand 20733 states and 22010 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:27,233 INFO L93 Difference]: Finished difference Result 45052 states and 48097 transitions. [2022-01-10 00:18:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:27,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 636 [2022-01-10 00:18:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:27,257 INFO L225 Difference]: With dead ends: 45052 [2022-01-10 00:18:27,257 INFO L226 Difference]: Without dead ends: 24620 [2022-01-10 00:18:27,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:27,271 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 147 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:27,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 556 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:18:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24620 states. [2022-01-10 00:18:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24620 to 24022. [2022-01-10 00:18:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24022 states, 24021 states have (on average 1.0544523541900837) internal successors, (25329), 24021 states have internal predecessors, (25329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 25329 transitions. [2022-01-10 00:18:27,483 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 25329 transitions. Word has length 636 [2022-01-10 00:18:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:27,483 INFO L470 AbstractCegarLoop]: Abstraction has 24022 states and 25329 transitions. [2022-01-10 00:18:27,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 25329 transitions. [2022-01-10 00:18:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2022-01-10 00:18:27,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:27,490 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:27,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 00:18:27,490 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1279725452, now seen corresponding path program 1 times [2022-01-10 00:18:27,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:27,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436303258] [2022-01-10 00:18:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:27,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 133 proven. 372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:18:27,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:27,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436303258] [2022-01-10 00:18:27,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436303258] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:18:27,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646737371] [2022-01-10 00:18:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:27,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:18:27,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:18:27,776 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:18:27,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:18:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:28,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 00:18:28,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:18:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 398 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:18:30,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:18:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 398 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:18:32,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646737371] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:18:32,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:18:32,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-10 00:18:32,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501908430] [2022-01-10 00:18:32,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:18:32,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 00:18:32,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 00:18:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 00:18:32,196 INFO L87 Difference]: Start difference. First operand 24022 states and 25329 transitions. Second operand has 10 states, 10 states have (on average 141.3) internal successors, (1413), 10 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:38,052 INFO L93 Difference]: Finished difference Result 56972 states and 59884 transitions. [2022-01-10 00:18:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 00:18:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 141.3) internal successors, (1413), 10 states have internal predecessors, (1413), 0 states have call successors, (0), 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 655 [2022-01-10 00:18:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:38,083 INFO L225 Difference]: With dead ends: 56972 [2022-01-10 00:18:38,083 INFO L226 Difference]: Without dead ends: 33251 [2022-01-10 00:18:38,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1356 GetRequests, 1325 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2022-01-10 00:18:38,097 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 3065 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 7971 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 8889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 7971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:38,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3065 Valid, 309 Invalid, 8889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 7971 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-10 00:18:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33251 states. [2022-01-10 00:18:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33251 to 24620. [2022-01-10 00:18:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24620 states, 24619 states have (on average 1.0519517445875137) internal successors, (25898), 24619 states have internal predecessors, (25898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24620 states to 24620 states and 25898 transitions. [2022-01-10 00:18:38,378 INFO L78 Accepts]: Start accepts. Automaton has 24620 states and 25898 transitions. Word has length 655 [2022-01-10 00:18:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:38,378 INFO L470 AbstractCegarLoop]: Abstraction has 24620 states and 25898 transitions. [2022-01-10 00:18:38,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 141.3) internal successors, (1413), 10 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24620 states and 25898 transitions. [2022-01-10 00:18:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2022-01-10 00:18:38,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:38,386 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:38,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 00:18:38,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:18:38,603 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1383378929, now seen corresponding path program 1 times [2022-01-10 00:18:38,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:38,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869247865] [2022-01-10 00:18:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:38,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 00:18:38,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:38,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869247865] [2022-01-10 00:18:38,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869247865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:38,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:38,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:18:38,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406562634] [2022-01-10 00:18:38,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:38,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:18:38,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:38,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:18:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:18:38,848 INFO L87 Difference]: Start difference. First operand 24620 states and 25898 transitions. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:40,700 INFO L93 Difference]: Finished difference Result 59428 states and 62340 transitions. [2022-01-10 00:18:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:18:40,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 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 695 [2022-01-10 00:18:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:40,734 INFO L225 Difference]: With dead ends: 59428 [2022-01-10 00:18:40,734 INFO L226 Difference]: Without dead ends: 34511 [2022-01-10 00:18:40,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:18:40,752 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 581 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:40,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 123 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:18:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34511 states. [2022-01-10 00:18:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34511 to 30016. [2022-01-10 00:18:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30016 states, 30015 states have (on average 1.049208728968849) internal successors, (31492), 30015 states have internal predecessors, (31492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30016 states to 30016 states and 31492 transitions. [2022-01-10 00:18:41,242 INFO L78 Accepts]: Start accepts. Automaton has 30016 states and 31492 transitions. Word has length 695 [2022-01-10 00:18:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:41,242 INFO L470 AbstractCegarLoop]: Abstraction has 30016 states and 31492 transitions. [2022-01-10 00:18:41,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 30016 states and 31492 transitions. [2022-01-10 00:18:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2022-01-10 00:18:41,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:41,253 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:41,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 00:18:41,254 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:41,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash -513337970, now seen corresponding path program 1 times [2022-01-10 00:18:41,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:41,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579536896] [2022-01-10 00:18:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:41,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-01-10 00:18:41,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579536896] [2022-01-10 00:18:41,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579536896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:41,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:41,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:41,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140171228] [2022-01-10 00:18:41,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:41,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:41,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:41,584 INFO L87 Difference]: Start difference. First operand 30016 states and 31492 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:42,927 INFO L93 Difference]: Finished difference Result 65733 states and 68939 transitions. [2022-01-10 00:18:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:42,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 734 [2022-01-10 00:18:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:42,966 INFO L225 Difference]: With dead ends: 65733 [2022-01-10 00:18:42,966 INFO L226 Difference]: Without dead ends: 36018 [2022-01-10 00:18:42,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:42,972 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 188 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:42,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 124 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:18:42,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36018 states. [2022-01-10 00:18:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36018 to 33305. [2022-01-10 00:18:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33305 states, 33304 states have (on average 1.0464809031948115) internal successors, (34852), 33304 states have internal predecessors, (34852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33305 states to 33305 states and 34852 transitions. [2022-01-10 00:18:43,311 INFO L78 Accepts]: Start accepts. Automaton has 33305 states and 34852 transitions. Word has length 734 [2022-01-10 00:18:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:43,311 INFO L470 AbstractCegarLoop]: Abstraction has 33305 states and 34852 transitions. [2022-01-10 00:18:43,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 33305 states and 34852 transitions. [2022-01-10 00:18:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2022-01-10 00:18:43,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:43,322 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:43,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 00:18:43,322 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1579179774, now seen corresponding path program 1 times [2022-01-10 00:18:43,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:43,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318752740] [2022-01-10 00:18:43,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:43,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2022-01-10 00:18:43,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:43,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318752740] [2022-01-10 00:18:43,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318752740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:43,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:43,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:43,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089123327] [2022-01-10 00:18:43,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:43,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:43,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:43,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:43,712 INFO L87 Difference]: Start difference. First operand 33305 states and 34852 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:44,921 INFO L93 Difference]: Finished difference Result 69611 states and 72813 transitions. [2022-01-10 00:18:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:44,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 807 [2022-01-10 00:18:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:44,957 INFO L225 Difference]: With dead ends: 69611 [2022-01-10 00:18:44,957 INFO L226 Difference]: Without dead ends: 36607 [2022-01-10 00:18:44,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:44,976 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 351 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:44,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 99 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:18:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36607 states. [2022-01-10 00:18:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36607 to 30605. [2022-01-10 00:18:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30605 states, 30604 states have (on average 1.0464971899098157) internal successors, (32027), 30604 states have internal predecessors, (32027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30605 states to 30605 states and 32027 transitions. [2022-01-10 00:18:45,396 INFO L78 Accepts]: Start accepts. Automaton has 30605 states and 32027 transitions. Word has length 807 [2022-01-10 00:18:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:45,397 INFO L470 AbstractCegarLoop]: Abstraction has 30605 states and 32027 transitions. [2022-01-10 00:18:45,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 30605 states and 32027 transitions. [2022-01-10 00:18:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2022-01-10 00:18:45,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:45,409 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:45,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 00:18:45,410 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2144767607, now seen corresponding path program 1 times [2022-01-10 00:18:45,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:45,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684952637] [2022-01-10 00:18:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:45,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-01-10 00:18:45,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:45,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684952637] [2022-01-10 00:18:45,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684952637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:45,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:45,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:45,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635293741] [2022-01-10 00:18:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:45,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:45,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:45,611 INFO L87 Difference]: Start difference. First operand 30605 states and 32027 transitions. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:46,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:46,928 INFO L93 Difference]: Finished difference Result 65110 states and 68103 transitions. [2022-01-10 00:18:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:46,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 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 831 [2022-01-10 00:18:46,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:46,961 INFO L225 Difference]: With dead ends: 65110 [2022-01-10 00:18:46,961 INFO L226 Difference]: Without dead ends: 34806 [2022-01-10 00:18:46,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:46,978 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 354 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:46,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 133 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:18:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34806 states. [2022-01-10 00:18:47,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34806 to 29706. [2022-01-10 00:18:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29706 states, 29705 states have (on average 1.0466588116478708) internal successors, (31091), 29705 states have internal predecessors, (31091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29706 states to 29706 states and 31091 transitions. [2022-01-10 00:18:47,389 INFO L78 Accepts]: Start accepts. Automaton has 29706 states and 31091 transitions. Word has length 831 [2022-01-10 00:18:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:47,390 INFO L470 AbstractCegarLoop]: Abstraction has 29706 states and 31091 transitions. [2022-01-10 00:18:47,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 29706 states and 31091 transitions. [2022-01-10 00:18:47,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2022-01-10 00:18:47,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:47,405 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:47,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 00:18:47,405 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:47,405 INFO L85 PathProgramCache]: Analyzing trace with hash 538928563, now seen corresponding path program 1 times [2022-01-10 00:18:47,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:47,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310147951] [2022-01-10 00:18:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:47,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 800 proven. 263 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-01-10 00:18:48,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:48,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310147951] [2022-01-10 00:18:48,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310147951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:18:48,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123718105] [2022-01-10 00:18:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:48,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:18:48,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:18:48,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:18:48,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 00:18:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:48,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 00:18:48,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:18:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 875 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-01-10 00:18:49,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:18:49,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123718105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:49,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:18:49,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 00:18:49,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921921861] [2022-01-10 00:18:49,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:49,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:49,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:49,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:18:49,473 INFO L87 Difference]: Start difference. First operand 29706 states and 31091 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:50,549 INFO L93 Difference]: Finished difference Result 63917 states and 66823 transitions. [2022-01-10 00:18:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:50,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 834 [2022-01-10 00:18:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:50,580 INFO L225 Difference]: With dead ends: 63917 [2022-01-10 00:18:50,580 INFO L226 Difference]: Without dead ends: 34512 [2022-01-10 00:18:50,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:18:50,590 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 261 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:50,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 191 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:18:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34512 states. [2022-01-10 00:18:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34512 to 29407. [2022-01-10 00:18:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29407 states, 29406 states have (on average 1.0467591647963002) internal successors, (30781), 29406 states have internal predecessors, (30781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29407 states to 29407 states and 30781 transitions. [2022-01-10 00:18:50,908 INFO L78 Accepts]: Start accepts. Automaton has 29407 states and 30781 transitions. Word has length 834 [2022-01-10 00:18:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:50,909 INFO L470 AbstractCegarLoop]: Abstraction has 29407 states and 30781 transitions. [2022-01-10 00:18:50,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 29407 states and 30781 transitions. [2022-01-10 00:18:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2022-01-10 00:18:50,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:50,919 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:50,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 00:18:51,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-10 00:18:51,136 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1021234867, now seen corresponding path program 1 times [2022-01-10 00:18:51,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:51,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535430251] [2022-01-10 00:18:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:51,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-01-10 00:18:51,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:51,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535430251] [2022-01-10 00:18:51,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535430251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:51,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:51,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:18:51,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031543557] [2022-01-10 00:18:51,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:51,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:18:51,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:18:51,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:18:51,349 INFO L87 Difference]: Start difference. First operand 29407 states and 30781 transitions. Second operand has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:52,627 INFO L93 Difference]: Finished difference Result 59381 states and 62140 transitions. [2022-01-10 00:18:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 00:18:52,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 846 [2022-01-10 00:18:52,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:52,657 INFO L225 Difference]: With dead ends: 59381 [2022-01-10 00:18:52,657 INFO L226 Difference]: Without dead ends: 30275 [2022-01-10 00:18:52,672 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 00:18:52,673 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 441 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:52,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 549 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:18:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30275 states. [2022-01-10 00:18:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30275 to 29408. [2022-01-10 00:18:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29408 states, 29407 states have (on average 1.0463495086203964) internal successors, (30770), 29407 states have internal predecessors, (30770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29408 states to 29408 states and 30770 transitions. [2022-01-10 00:18:52,996 INFO L78 Accepts]: Start accepts. Automaton has 29408 states and 30770 transitions. Word has length 846 [2022-01-10 00:18:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:52,996 INFO L470 AbstractCegarLoop]: Abstraction has 29408 states and 30770 transitions. [2022-01-10 00:18:52,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 29408 states and 30770 transitions. [2022-01-10 00:18:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-01-10 00:18:53,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:53,007 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:53,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 00:18:53,007 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2000814475, now seen corresponding path program 1 times [2022-01-10 00:18:53,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:53,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057646740] [2022-01-10 00:18:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:53,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2022-01-10 00:18:53,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:53,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057646740] [2022-01-10 00:18:53,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057646740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:18:53,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:18:53,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:18:53,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363275903] [2022-01-10 00:18:53,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:18:53,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:18:53,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:18:53,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:18:53,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:53,385 INFO L87 Difference]: Start difference. First operand 29408 states and 30770 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:18:54,465 INFO L93 Difference]: Finished difference Result 63302 states and 66263 transitions. [2022-01-10 00:18:54,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:18:54,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 882 [2022-01-10 00:18:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:18:54,498 INFO L225 Difference]: With dead ends: 63302 [2022-01-10 00:18:54,498 INFO L226 Difference]: Without dead ends: 34195 [2022-01-10 00:18:54,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:18:54,516 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 211 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:18:54,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 135 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:18:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34195 states. [2022-01-10 00:18:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34195 to 31501. [2022-01-10 00:18:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31501 states, 31500 states have (on average 1.0405396825396824) internal successors, (32777), 31500 states have internal predecessors, (32777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31501 states to 31501 states and 32777 transitions. [2022-01-10 00:18:54,948 INFO L78 Accepts]: Start accepts. Automaton has 31501 states and 32777 transitions. Word has length 882 [2022-01-10 00:18:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:18:54,949 INFO L470 AbstractCegarLoop]: Abstraction has 31501 states and 32777 transitions. [2022-01-10 00:18:54,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:18:54,949 INFO L276 IsEmpty]: Start isEmpty. Operand 31501 states and 32777 transitions. [2022-01-10 00:18:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2022-01-10 00:18:54,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:18:54,959 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:18:54,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 00:18:54,959 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:18:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:18:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1630303017, now seen corresponding path program 1 times [2022-01-10 00:18:54,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:18:54,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586992328] [2022-01-10 00:18:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:54,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:18:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 854 proven. 143 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-01-10 00:18:55,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:18:55,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586992328] [2022-01-10 00:18:55,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586992328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:18:55,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754943347] [2022-01-10 00:18:55,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:18:55,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:18:55,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:18:55,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:18:55,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 00:18:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:18:55,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:18:55,387 INFO L286 TraceCheckSpWp]: Computing forward predicates...