/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/Problem18_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:30:53,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:30:53,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:30:53,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:30:53,776 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 00:30:53,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:30:53,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:30:53,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:30:53,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:30:53,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:30:53,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:30:53,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:30:53,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:30:53,810 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:30:53,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:30:53,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:30:53,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:30:53,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:30:53,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:30:53,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:30:53,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:30:53,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:30:53,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:30:53,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:30:53,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:30:53,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:30:53,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:30:53,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:30:53,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:30:53,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:30:53,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:30:53,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:30:53,813 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:30:53,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:30:53,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:30:53,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:30:54,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:30:54,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:30:54,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:30:54,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:30:54,111 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:30:54,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label49.c [2022-01-10 00:30:54,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb8d59a2/5e367848628b45d09493baea418eee76/FLAG3cd8ec63b [2022-01-10 00:30:54,790 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:30:54,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label49.c [2022-01-10 00:30:54,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb8d59a2/5e367848628b45d09493baea418eee76/FLAG3cd8ec63b [2022-01-10 00:30:54,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb8d59a2/5e367848628b45d09493baea418eee76 [2022-01-10 00:30:54,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:30:54,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:30:54,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:30:54,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:30:54,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:30:54,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:30:54" (1/1) ... [2022-01-10 00:30:54,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146289d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:54, skipping insertion in model container [2022-01-10 00:30:54,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:30:54" (1/1) ... [2022-01-10 00:30:54,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:30:55,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:30:55,267 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/Problem18_label49.c[2595,2608] [2022-01-10 00:30:55,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:30:55,872 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:30:55,898 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/Problem18_label49.c[2595,2608] [2022-01-10 00:30:56,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:30:56,222 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:30:56,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56 WrapperNode [2022-01-10 00:30:56,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:30:56,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:30:56,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:30:56,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:30:56,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,400 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-01-10 00:30:56,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:30:56,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:30:56,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:30:56,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:30:56,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:30:56,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:30:56,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:30:56,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:30:56,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (1/1) ... [2022-01-10 00:30:56,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:30:56,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:30:56,725 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 00:30:56,740 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 00:30:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:30:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:30:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:30:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:30:56,818 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:30:56,819 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:30:59,495 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:30:59,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:30:59,509 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:30:59,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:30:59 BoogieIcfgContainer [2022-01-10 00:30:59,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:30:59,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:30:59,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:30:59,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:30:59,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:30:54" (1/3) ... [2022-01-10 00:30:59,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9ee451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:30:59, skipping insertion in model container [2022-01-10 00:30:59,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:56" (2/3) ... [2022-01-10 00:30:59,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9ee451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:30:59, skipping insertion in model container [2022-01-10 00:30:59,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:30:59" (3/3) ... [2022-01-10 00:30:59,520 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label49.c [2022-01-10 00:30:59,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:30:59,525 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:30:59,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:30:59,589 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 00:30:59,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:30:59,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 00:30:59,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:59,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:30:59,629 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:59,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:59,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1644072970, now seen corresponding path program 1 times [2022-01-10 00:30:59,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:59,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106739188] [2022-01-10 00:30:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:59,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:59,781 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 00:30:59,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:59,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106739188] [2022-01-10 00:30:59,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106739188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:59,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:59,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:30:59,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876157027] [2022-01-10 00:30:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:59,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:59,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:59,812 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:02,511 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2022-01-10 00:31:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-01-10 00:31:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:02,541 INFO L225 Difference]: With dead ends: 2205 [2022-01-10 00:31:02,541 INFO L226 Difference]: Without dead ends: 1384 [2022-01-10 00:31:02,554 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 00:31:02,561 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:02,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 430 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 00:31:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-01-10 00:31:02,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-01-10 00:31:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.6514822848879247) internal successors, (2284), 1383 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2284 transitions. [2022-01-10 00:31:02,676 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2284 transitions. Word has length 22 [2022-01-10 00:31:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:02,677 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2284 transitions. [2022-01-10 00:31:02,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2284 transitions. [2022-01-10 00:31:02,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 00:31:02,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:02,681 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:02,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:31:02,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:02,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1242209805, now seen corresponding path program 1 times [2022-01-10 00:31:02,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:02,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515413635] [2022-01-10 00:31:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:02,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:31:02,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:02,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515413635] [2022-01-10 00:31:02,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515413635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:02,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:02,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:31:02,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973550606] [2022-01-10 00:31:02,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:02,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:02,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:02,861 INFO L87 Difference]: Start difference. First operand 1384 states and 2284 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:05,404 INFO L93 Difference]: Finished difference Result 4146 states and 6847 transitions. [2022-01-10 00:31:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:05,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 00:31:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:05,416 INFO L225 Difference]: With dead ends: 4146 [2022-01-10 00:31:05,417 INFO L226 Difference]: Without dead ends: 2764 [2022-01-10 00:31:05,423 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 00:31:05,424 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 712 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:05,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 531 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:31:05,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-01-10 00:31:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-01-10 00:31:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.404632645674991) internal successors, (3881), 2763 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3881 transitions. [2022-01-10 00:31:05,482 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3881 transitions. Word has length 88 [2022-01-10 00:31:05,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:05,484 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3881 transitions. [2022-01-10 00:31:05,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3881 transitions. [2022-01-10 00:31:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 00:31:05,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:05,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:05,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:31:05,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1538885931, now seen corresponding path program 1 times [2022-01-10 00:31:05,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:05,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285002100] [2022-01-10 00:31:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:05,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:31:05,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:05,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285002100] [2022-01-10 00:31:05,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285002100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:05,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:05,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:31:05,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823081967] [2022-01-10 00:31:05,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:05,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:05,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:05,558 INFO L87 Difference]: Start difference. First operand 2764 states and 3881 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:08,114 INFO L93 Difference]: Finished difference Result 8286 states and 11638 transitions. [2022-01-10 00:31:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:08,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 00:31:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:08,134 INFO L225 Difference]: With dead ends: 8286 [2022-01-10 00:31:08,134 INFO L226 Difference]: Without dead ends: 5524 [2022-01-10 00:31:08,139 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 00:31:08,140 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 707 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:08,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 435 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:31:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2022-01-10 00:31:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 4834. [2022-01-10 00:31:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4833 states have (on average 1.2971239395820402) internal successors, (6269), 4833 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6269 transitions. [2022-01-10 00:31:08,232 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6269 transitions. Word has length 89 [2022-01-10 00:31:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:08,232 INFO L470 AbstractCegarLoop]: Abstraction has 4834 states and 6269 transitions. [2022-01-10 00:31:08,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6269 transitions. [2022-01-10 00:31:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-10 00:31:08,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:08,235 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:08,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:31:08,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:08,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:08,236 INFO L85 PathProgramCache]: Analyzing trace with hash 227131977, now seen corresponding path program 1 times [2022-01-10 00:31:08,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:08,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906497396] [2022-01-10 00:31:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:08,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 00:31:08,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:08,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906497396] [2022-01-10 00:31:08,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906497396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:08,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:08,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:08,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725311614] [2022-01-10 00:31:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:08,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:31:08,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:31:08,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:31:08,433 INFO L87 Difference]: Start difference. First operand 4834 states and 6269 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:11,610 INFO L93 Difference]: Finished difference Result 12426 states and 15644 transitions. [2022-01-10 00:31:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:31:11,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 209 [2022-01-10 00:31:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:11,632 INFO L225 Difference]: With dead ends: 12426 [2022-01-10 00:31:11,632 INFO L226 Difference]: Without dead ends: 7594 [2022-01-10 00:31:11,638 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 00:31:11,639 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1872 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:11,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 641 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 00:31:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2022-01-10 00:31:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 6904. [2022-01-10 00:31:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.2358394900767782) internal successors, (8531), 6903 states have internal predecessors, (8531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 8531 transitions. [2022-01-10 00:31:11,741 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 8531 transitions. Word has length 209 [2022-01-10 00:31:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:11,743 INFO L470 AbstractCegarLoop]: Abstraction has 6904 states and 8531 transitions. [2022-01-10 00:31:11,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 8531 transitions. [2022-01-10 00:31:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-01-10 00:31:11,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:11,751 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:31:11,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:31:11,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:11,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1583891810, now seen corresponding path program 1 times [2022-01-10 00:31:11,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:11,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340090004] [2022-01-10 00:31:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:11,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 00:31:11,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:11,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340090004] [2022-01-10 00:31:11,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340090004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:11,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:11,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:11,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933033026] [2022-01-10 00:31:12,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:12,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:31:12,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:31:12,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:31:12,002 INFO L87 Difference]: Start difference. First operand 6904 states and 8531 transitions. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:14,189 INFO L93 Difference]: Finished difference Result 15239 states and 18535 transitions. [2022-01-10 00:31:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:31:14,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 391 [2022-01-10 00:31:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:14,221 INFO L225 Difference]: With dead ends: 15239 [2022-01-10 00:31:14,221 INFO L226 Difference]: Without dead ends: 8284 [2022-01-10 00:31:14,229 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 00:31:14,232 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 531 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:14,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 637 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:31:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-01-10 00:31:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2022-01-10 00:31:14,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8284 states, 8283 states have (on average 1.154291923216226) internal successors, (9561), 8283 states have internal predecessors, (9561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 9561 transitions. [2022-01-10 00:31:14,365 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 9561 transitions. Word has length 391 [2022-01-10 00:31:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:14,366 INFO L470 AbstractCegarLoop]: Abstraction has 8284 states and 9561 transitions. [2022-01-10 00:31:14,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 9561 transitions. [2022-01-10 00:31:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-01-10 00:31:14,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:14,371 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:14,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:31:14,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1070484450, now seen corresponding path program 1 times [2022-01-10 00:31:14,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:14,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107485278] [2022-01-10 00:31:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:14,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 00:31:14,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:14,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107485278] [2022-01-10 00:31:14,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107485278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:14,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:14,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:31:14,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085189014] [2022-01-10 00:31:14,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:14,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:14,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:14,567 INFO L87 Difference]: Start difference. First operand 8284 states and 9561 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:16,421 INFO L93 Difference]: Finished difference Result 20016 states and 22949 transitions. [2022-01-10 00:31:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:16,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 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 406 [2022-01-10 00:31:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:16,455 INFO L225 Difference]: With dead ends: 20016 [2022-01-10 00:31:16,455 INFO L226 Difference]: Without dead ends: 11734 [2022-01-10 00:31:16,465 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 00:31:16,466 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 466 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:16,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 77 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:31:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11734 states. [2022-01-10 00:31:16,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11734 to 11734. [2022-01-10 00:31:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11734 states, 11733 states have (on average 1.119151112247507) internal successors, (13131), 11733 states have internal predecessors, (13131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 13131 transitions. [2022-01-10 00:31:16,633 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 13131 transitions. Word has length 406 [2022-01-10 00:31:16,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:16,634 INFO L470 AbstractCegarLoop]: Abstraction has 11734 states and 13131 transitions. [2022-01-10 00:31:16,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 13131 transitions. [2022-01-10 00:31:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-01-10 00:31:16,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:16,640 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:16,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:31:16,641 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:16,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash 613116622, now seen corresponding path program 1 times [2022-01-10 00:31:16,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:16,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146602597] [2022-01-10 00:31:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:16,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:31:16,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:16,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146602597] [2022-01-10 00:31:16,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146602597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:16,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:16,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:16,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852503387] [2022-01-10 00:31:16,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:16,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:16,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:16,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:16,827 INFO L87 Difference]: Start difference. First operand 11734 states and 13131 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:18,800 INFO L93 Difference]: Finished difference Result 32436 states and 36566 transitions. [2022-01-10 00:31:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 414 [2022-01-10 00:31:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:18,838 INFO L225 Difference]: With dead ends: 32436 [2022-01-10 00:31:18,838 INFO L226 Difference]: Without dead ends: 20704 [2022-01-10 00:31:18,853 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 00:31:18,854 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 600 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:18,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 979 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:31:18,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20704 states. [2022-01-10 00:31:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20704 to 20014. [2022-01-10 00:31:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20014 states, 20013 states have (on average 1.095537900364763) internal successors, (21925), 20013 states have internal predecessors, (21925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20014 states to 20014 states and 21925 transitions. [2022-01-10 00:31:19,124 INFO L78 Accepts]: Start accepts. Automaton has 20014 states and 21925 transitions. Word has length 414 [2022-01-10 00:31:19,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:19,125 INFO L470 AbstractCegarLoop]: Abstraction has 20014 states and 21925 transitions. [2022-01-10 00:31:19,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand 20014 states and 21925 transitions. [2022-01-10 00:31:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-01-10 00:31:19,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:19,132 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:19,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:31:19,132 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash 488569505, now seen corresponding path program 1 times [2022-01-10 00:31:19,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:19,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776900285] [2022-01-10 00:31:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:19,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 00:31:19,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:19,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776900285] [2022-01-10 00:31:19,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776900285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:19,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:19,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:19,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830940540] [2022-01-10 00:31:19,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:19,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:19,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:19,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:19,287 INFO L87 Difference]: Start difference. First operand 20014 states and 21925 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:21,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:21,148 INFO L93 Difference]: Finished difference Result 46236 states and 50984 transitions. [2022-01-10 00:31:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:21,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 421 [2022-01-10 00:31:21,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:21,195 INFO L225 Difference]: With dead ends: 46236 [2022-01-10 00:31:21,195 INFO L226 Difference]: Without dead ends: 22774 [2022-01-10 00:31:21,216 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 00:31:21,217 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 682 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:21,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1120 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:31:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2022-01-10 00:31:21,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 20704. [2022-01-10 00:31:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20704 states, 20703 states have (on average 1.0554025986571995) internal successors, (21850), 20703 states have internal predecessors, (21850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20704 states to 20704 states and 21850 transitions. [2022-01-10 00:31:21,478 INFO L78 Accepts]: Start accepts. Automaton has 20704 states and 21850 transitions. Word has length 421 [2022-01-10 00:31:21,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:21,479 INFO L470 AbstractCegarLoop]: Abstraction has 20704 states and 21850 transitions. [2022-01-10 00:31:21,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20704 states and 21850 transitions. [2022-01-10 00:31:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-01-10 00:31:21,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:21,486 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2022-01-10 00:31:21,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:31:21,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1598288203, now seen corresponding path program 1 times [2022-01-10 00:31:21,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:21,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114150640] [2022-01-10 00:31:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:21,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-01-10 00:31:21,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:21,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114150640] [2022-01-10 00:31:21,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114150640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:21,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:21,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:21,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299442671] [2022-01-10 00:31:21,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:21,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:21,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:21,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:21,656 INFO L87 Difference]: Start difference. First operand 20704 states and 21850 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:23,341 INFO L93 Difference]: Finished difference Result 46236 states and 49051 transitions. [2022-01-10 00:31:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:23,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 492 [2022-01-10 00:31:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:23,379 INFO L225 Difference]: With dead ends: 46236 [2022-01-10 00:31:23,379 INFO L226 Difference]: Without dead ends: 23464 [2022-01-10 00:31:23,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:23,397 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 688 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:23,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 936 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:31:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23464 states. [2022-01-10 00:31:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23464 to 23464. [2022-01-10 00:31:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 23463 states have (on average 1.0528065464774325) internal successors, (24702), 23463 states have internal predecessors, (24702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 24702 transitions. [2022-01-10 00:31:23,660 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 24702 transitions. Word has length 492 [2022-01-10 00:31:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:23,662 INFO L470 AbstractCegarLoop]: Abstraction has 23464 states and 24702 transitions. [2022-01-10 00:31:23,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 24702 transitions. [2022-01-10 00:31:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2022-01-10 00:31:23,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:23,679 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:31:23,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:31:23,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1544214007, now seen corresponding path program 1 times [2022-01-10 00:31:23,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:23,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365074881] [2022-01-10 00:31:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:23,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-01-10 00:31:24,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:24,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365074881] [2022-01-10 00:31:24,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365074881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:24,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:24,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:24,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259389060] [2022-01-10 00:31:24,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:24,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:24,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:24,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:24,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:24,066 INFO L87 Difference]: Start difference. First operand 23464 states and 24702 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:25,601 INFO L93 Difference]: Finished difference Result 46926 states and 49402 transitions. [2022-01-10 00:31:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:25,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 00:31:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:25,631 INFO L225 Difference]: With dead ends: 46926 [2022-01-10 00:31:25,631 INFO L226 Difference]: Without dead ends: 23464 [2022-01-10 00:31:25,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 00:31:25,649 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 775 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:25,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 746 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:31:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23464 states. [2022-01-10 00:31:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23464 to 23464. [2022-01-10 00:31:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 23463 states have (on average 1.046583983292844) internal successors, (24556), 23463 states have internal predecessors, (24556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 24556 transitions. [2022-01-10 00:31:25,914 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 24556 transitions. Word has length 655 [2022-01-10 00:31:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:25,915 INFO L470 AbstractCegarLoop]: Abstraction has 23464 states and 24556 transitions. [2022-01-10 00:31:25,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 24556 transitions. [2022-01-10 00:31:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-01-10 00:31:25,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:25,928 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:25,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:31:25,929 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:25,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1111044852, now seen corresponding path program 1 times [2022-01-10 00:31:25,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:25,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497364025] [2022-01-10 00:31:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:25,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2022-01-10 00:31:26,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:26,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497364025] [2022-01-10 00:31:26,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497364025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:26,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:26,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:26,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272071241] [2022-01-10 00:31:26,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:26,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:26,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:26,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:26,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:26,218 INFO L87 Difference]: Start difference. First operand 23464 states and 24556 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:27,271 INFO L93 Difference]: Finished difference Result 46948 states and 49132 transitions. [2022-01-10 00:31:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 698 [2022-01-10 00:31:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:27,300 INFO L225 Difference]: With dead ends: 46948 [2022-01-10 00:31:27,300 INFO L226 Difference]: Without dead ends: 23464 [2022-01-10 00:31:27,317 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 00:31:27,318 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:27,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 986 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:31:27,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23464 states. [2022-01-10 00:31:27,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23464 to 23464. [2022-01-10 00:31:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 23463 states have (on average 1.0464135021097047) internal successors, (24552), 23463 states have internal predecessors, (24552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 24552 transitions. [2022-01-10 00:31:27,562 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 24552 transitions. Word has length 698 [2022-01-10 00:31:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:27,563 INFO L470 AbstractCegarLoop]: Abstraction has 23464 states and 24552 transitions. [2022-01-10 00:31:27,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 24552 transitions. [2022-01-10 00:31:27,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2022-01-10 00:31:27,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:27,578 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:31:27,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:31:27,579 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash -761155750, now seen corresponding path program 1 times [2022-01-10 00:31:27,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:27,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980121550] [2022-01-10 00:31:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:27,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 621 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 00:31:27,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:27,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980121550] [2022-01-10 00:31:27,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980121550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:27,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:27,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:27,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742382831] [2022-01-10 00:31:27,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:27,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:31:27,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:31:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:31:27,806 INFO L87 Difference]: Start difference. First operand 23464 states and 24552 transitions. Second operand has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:30,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:30,192 INFO L93 Difference]: Finished difference Result 53826 states and 56582 transitions. [2022-01-10 00:31:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:31:30,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 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 711 [2022-01-10 00:31:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:30,219 INFO L225 Difference]: With dead ends: 53826 [2022-01-10 00:31:30,220 INFO L226 Difference]: Without dead ends: 30364 [2022-01-10 00:31:30,237 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 00:31:30,237 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 1000 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:30,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 90 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:31:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30364 states. [2022-01-10 00:31:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30364 to 29674. [2022-01-10 00:31:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29674 states, 29673 states have (on average 1.044147878542783) internal successors, (30983), 29673 states have internal predecessors, (30983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29674 states to 29674 states and 30983 transitions. [2022-01-10 00:31:30,552 INFO L78 Accepts]: Start accepts. Automaton has 29674 states and 30983 transitions. Word has length 711 [2022-01-10 00:31:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:30,552 INFO L470 AbstractCegarLoop]: Abstraction has 29674 states and 30983 transitions. [2022-01-10 00:31:30,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 29674 states and 30983 transitions. [2022-01-10 00:31:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1255 [2022-01-10 00:31:30,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:30,575 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:30,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:31:30,575 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:30,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:30,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1452084311, now seen corresponding path program 1 times [2022-01-10 00:31:30,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:30,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933181142] [2022-01-10 00:31:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:30,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 460 proven. 938 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 00:31:31,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:31,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933181142] [2022-01-10 00:31:31,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933181142] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:31:31,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193329846] [2022-01-10 00:31:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:31,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:31:31,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:31:31,395 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 00:31:31,401 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 00:31:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:31,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:31:31,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:31:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2022-01-10 00:31:33,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:31:33,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193329846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:33,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:31:33,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 00:31:33,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151976495] [2022-01-10 00:31:33,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:33,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:33,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:31:33,513 INFO L87 Difference]: Start difference. First operand 29674 states and 30983 transitions. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:35,084 INFO L93 Difference]: Finished difference Result 59346 states and 61971 transitions. [2022-01-10 00:31:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:35,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 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 1254 [2022-01-10 00:31:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:35,121 INFO L225 Difference]: With dead ends: 59346 [2022-01-10 00:31:35,122 INFO L226 Difference]: Without dead ends: 29674 [2022-01-10 00:31:35,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:31:35,138 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 642 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:35,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 804 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:31:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29674 states. [2022-01-10 00:31:35,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29674 to 29674. [2022-01-10 00:31:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29674 states, 29673 states have (on average 1.0401374987362249) internal successors, (30864), 29673 states have internal predecessors, (30864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29674 states to 29674 states and 30864 transitions. [2022-01-10 00:31:35,409 INFO L78 Accepts]: Start accepts. Automaton has 29674 states and 30864 transitions. Word has length 1254 [2022-01-10 00:31:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:35,410 INFO L470 AbstractCegarLoop]: Abstraction has 29674 states and 30864 transitions. [2022-01-10 00:31:35,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 29674 states and 30864 transitions. [2022-01-10 00:31:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1287 [2022-01-10 00:31:35,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:35,432 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:35,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:31:35,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-10 00:31:35,643 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash 639595670, now seen corresponding path program 1 times [2022-01-10 00:31:35,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:35,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37184861] [2022-01-10 00:31:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:35,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 1322 proven. 614 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-01-10 00:31:36,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:36,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37184861] [2022-01-10 00:31:36,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37184861] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:31:36,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912087396] [2022-01-10 00:31:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:36,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:31:36,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:31:36,452 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 00:31:36,459 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 00:31:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:36,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:31:36,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:31:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 1334 proven. 0 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-01-10 00:31:38,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:31:38,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912087396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:38,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:31:38,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 00:31:38,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845059264] [2022-01-10 00:31:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:38,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:38,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:31:38,301 INFO L87 Difference]: Start difference. First operand 29674 states and 30864 transitions. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:39,869 INFO L93 Difference]: Finished difference Result 69006 states and 72131 transitions. [2022-01-10 00:31:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:39,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 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 1286 [2022-01-10 00:31:39,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:39,984 INFO L225 Difference]: With dead ends: 69006 [2022-01-10 00:31:39,984 INFO L226 Difference]: Without dead ends: 40024 [2022-01-10 00:31:39,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1292 GetRequests, 1286 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:31:39,996 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 632 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:39,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 148 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:31:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40024 states. [2022-01-10 00:31:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40024 to 39334. [2022-01-10 00:31:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.038415579793049) internal successors, (40844), 39333 states have internal predecessors, (40844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 40844 transitions. [2022-01-10 00:31:40,361 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 40844 transitions. Word has length 1286 [2022-01-10 00:31:40,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:40,361 INFO L470 AbstractCegarLoop]: Abstraction has 39334 states and 40844 transitions. [2022-01-10 00:31:40,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:40,362 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 40844 transitions. [2022-01-10 00:31:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2022-01-10 00:31:40,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:40,382 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:40,401 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 00:31:40,587 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,SelfDestructingSolverStorable13 [2022-01-10 00:31:40,588 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:40,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1276530043, now seen corresponding path program 1 times [2022-01-10 00:31:40,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:40,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759491655] [2022-01-10 00:31:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:40,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 1474 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2022-01-10 00:31:41,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:41,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759491655] [2022-01-10 00:31:41,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759491655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:41,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:41,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:41,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170763830] [2022-01-10 00:31:41,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:41,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:41,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:41,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:41,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:41,269 INFO L87 Difference]: Start difference. First operand 39334 states and 40844 transitions. Second operand has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:42,905 INFO L93 Difference]: Finished difference Result 77976 states and 80995 transitions. [2022-01-10 00:31:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 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 1346 [2022-01-10 00:31:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:42,945 INFO L225 Difference]: With dead ends: 77976 [2022-01-10 00:31:42,946 INFO L226 Difference]: Without dead ends: 39334 [2022-01-10 00:31:42,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 00:31:42,965 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 658 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:42,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 758 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:31:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39334 states. [2022-01-10 00:31:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39334 to 39334. [2022-01-10 00:31:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.0367884473597233) internal successors, (40780), 39333 states have internal predecessors, (40780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 40780 transitions. [2022-01-10 00:31:43,361 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 40780 transitions. Word has length 1346 [2022-01-10 00:31:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:43,362 INFO L470 AbstractCegarLoop]: Abstraction has 39334 states and 40780 transitions. [2022-01-10 00:31:43,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:43,362 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 40780 transitions. [2022-01-10 00:31:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1358 [2022-01-10 00:31:43,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:43,382 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:43,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:31:43,382 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash 57101728, now seen corresponding path program 1 times [2022-01-10 00:31:43,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:43,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586549743] [2022-01-10 00:31:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:43,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 626 proven. 0 refuted. 0 times theorem prover too weak. 1636 trivial. 0 not checked. [2022-01-10 00:31:44,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:44,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586549743] [2022-01-10 00:31:44,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586549743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:44,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:44,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:44,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47999889] [2022-01-10 00:31:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:44,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:44,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:44,068 INFO L87 Difference]: Start difference. First operand 39334 states and 40780 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:45,847 INFO L93 Difference]: Finished difference Result 85566 states and 89074 transitions. [2022-01-10 00:31:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:45,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 1357 [2022-01-10 00:31:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:45,908 INFO L225 Difference]: With dead ends: 85566 [2022-01-10 00:31:45,908 INFO L226 Difference]: Without dead ends: 46924 [2022-01-10 00:31:45,936 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 00:31:45,937 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 611 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:45,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 269 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:31:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46924 states. [2022-01-10 00:31:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46924 to 40024. [2022-01-10 00:31:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40024 states, 40023 states have (on average 1.0364040676610948) internal successors, (41480), 40023 states have internal predecessors, (41480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40024 states to 40024 states and 41480 transitions. [2022-01-10 00:31:46,416 INFO L78 Accepts]: Start accepts. Automaton has 40024 states and 41480 transitions. Word has length 1357 [2022-01-10 00:31:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:46,417 INFO L470 AbstractCegarLoop]: Abstraction has 40024 states and 41480 transitions. [2022-01-10 00:31:46,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 40024 states and 41480 transitions. [2022-01-10 00:31:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1389 [2022-01-10 00:31:46,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:46,440 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:46,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:31:46,440 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1000439274, now seen corresponding path program 1 times [2022-01-10 00:31:46,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:46,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405361558] [2022-01-10 00:31:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:46,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat