/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/Problem17_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:26:46,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:26:46,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:26:46,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:26:46,451 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 00:26:46,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:26:46,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:26:46,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:26:46,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:26:46,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:26:46,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:26:46,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:26:46,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:26:46,471 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:26:46,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:26:46,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:26:46,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:26:46,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:26:46,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:26:46,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:26:46,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:26:46,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:26:46,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:26:46,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:26:46,475 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:26:46,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:26:46,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:26:46,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:26:46,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:26:46,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:26:46,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:26:46,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:26:46,669 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:26:46,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2022-01-10 00:26:46,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e51761a/e01d49a8d5d8452dbe0f33fc2b840c76/FLAG197950f34 [2022-01-10 00:26:47,253 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:26:47,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2022-01-10 00:26:47,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e51761a/e01d49a8d5d8452dbe0f33fc2b840c76/FLAG197950f34 [2022-01-10 00:26:47,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e51761a/e01d49a8d5d8452dbe0f33fc2b840c76 [2022-01-10 00:26:47,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:26:47,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:26:47,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:26:47,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:26:47,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:26:47,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:26:47" (1/1) ... [2022-01-10 00:26:47,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a900111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:47, skipping insertion in model container [2022-01-10 00:26:47,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:26:47" (1/1) ... [2022-01-10 00:26:47,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:26:47,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:26:47,962 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/Problem17_label53.c[2227,2240] [2022-01-10 00:26:48,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:26:48,394 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:26:48,413 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/Problem17_label53.c[2227,2240] [2022-01-10 00:26:48,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:26:48,614 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:26:48,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48 WrapperNode [2022-01-10 00:26:48,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:26:48,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:26:48,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:26:48,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:26:48,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:48,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:48,829 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:26:48,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:26:48,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:26:48,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:26:48,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:26:48,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:48,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:48,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:48,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:48,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:49,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:49,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:49,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:26:49,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:26:49,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:26:49,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:26:49,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (1/1) ... [2022-01-10 00:26:49,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:26:49,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:26:49,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:26:49,136 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 00:26:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:26:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:26:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:26:49,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:26:49,198 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:26:49,200 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:26:51,494 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:26:51,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:26:51,511 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:26:51,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:26:51 BoogieIcfgContainer [2022-01-10 00:26:51,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:26:51,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:26:51,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:26:51,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:26:51,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:26:47" (1/3) ... [2022-01-10 00:26:51,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc0d41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:26:51, skipping insertion in model container [2022-01-10 00:26:51,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:48" (2/3) ... [2022-01-10 00:26:51,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc0d41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:26:51, skipping insertion in model container [2022-01-10 00:26:51,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:26:51" (3/3) ... [2022-01-10 00:26:51,520 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label53.c [2022-01-10 00:26:51,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:26:51,524 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:26:51,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:26:51,563 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 00:26:51,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:26:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 00:26:51,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:51,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:51,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:51,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1414013846, now seen corresponding path program 1 times [2022-01-10 00:26:51,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:51,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451998341] [2022-01-10 00:26:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:51,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:51,723 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 00:26:51,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:51,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451998341] [2022-01-10 00:26:51,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451998341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:51,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:51,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:51,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514100533] [2022-01-10 00:26:51,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:51,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:51,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:51,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:51,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:51,755 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:54,301 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-01-10 00:26:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:54,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-01-10 00:26:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:54,327 INFO L225 Difference]: With dead ends: 1644 [2022-01-10 00:26:54,327 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 00:26:54,331 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 00:26:54,333 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 474 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:54,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:26:54,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 00:26:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-01-10 00:26:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:54,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-01-10 00:26:54,414 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 14 [2022-01-10 00:26:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:54,414 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-01-10 00:26:54,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-01-10 00:26:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 00:26:54,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:54,416 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 00:26:54,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:26:54,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash -222699934, now seen corresponding path program 1 times [2022-01-10 00:26:54,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:54,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777198937] [2022-01-10 00:26:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:54,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:54,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:54,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777198937] [2022-01-10 00:26:54,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777198937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:54,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:54,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:54,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769258509] [2022-01-10 00:26:54,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:54,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:54,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:54,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:54,540 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:56,542 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2022-01-10 00:26:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:56,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 00:26:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:56,548 INFO L225 Difference]: With dead ends: 2815 [2022-01-10 00:26:56,549 INFO L226 Difference]: Without dead ends: 1846 [2022-01-10 00:26:56,550 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 00:26:56,551 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:56,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 580 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:26:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-01-10 00:26:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2022-01-10 00:26:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2022-01-10 00:26:56,580 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 81 [2022-01-10 00:26:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:56,581 INFO L470 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2022-01-10 00:26:56,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2022-01-10 00:26:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 00:26:56,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:56,583 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 00:26:56,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:26:56,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash -705786570, now seen corresponding path program 1 times [2022-01-10 00:26:56,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:56,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077422106] [2022-01-10 00:26:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:56,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:56,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:56,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077422106] [2022-01-10 00:26:56,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077422106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:56,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:56,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:56,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065585402] [2022-01-10 00:26:56,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:56,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:56,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:56,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:56,645 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:58,465 INFO L93 Difference]: Finished difference Result 4552 states and 6285 transitions. [2022-01-10 00:26:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:58,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 00:26:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:58,496 INFO L225 Difference]: With dead ends: 4552 [2022-01-10 00:26:58,496 INFO L226 Difference]: Without dead ends: 2713 [2022-01-10 00:26:58,498 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 00:26:58,499 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 493 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:58,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:26:58,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-01-10 00:26:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2022-01-10 00:26:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3007380073800738) internal successors, (3525), 2710 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3525 transitions. [2022-01-10 00:26:58,533 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3525 transitions. Word has length 84 [2022-01-10 00:26:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:58,534 INFO L470 AbstractCegarLoop]: Abstraction has 2711 states and 3525 transitions. [2022-01-10 00:26:58,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3525 transitions. [2022-01-10 00:26:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 00:26:58,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:58,541 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:58,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:26:58,542 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:58,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:58,542 INFO L85 PathProgramCache]: Analyzing trace with hash -261624751, now seen corresponding path program 1 times [2022-01-10 00:26:58,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:58,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498890050] [2022-01-10 00:26:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:58,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 00:26:58,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498890050] [2022-01-10 00:26:58,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498890050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:58,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:58,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:58,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243285310] [2022-01-10 00:26:58,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:58,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:58,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:58,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:58,688 INFO L87 Difference]: Start difference. First operand 2711 states and 3525 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:00,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:00,329 INFO L93 Difference]: Finished difference Result 7984 states and 10364 transitions. [2022-01-10 00:27:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:00,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-01-10 00:27:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:00,341 INFO L225 Difference]: With dead ends: 7984 [2022-01-10 00:27:00,341 INFO L226 Difference]: Without dead ends: 4421 [2022-01-10 00:27:00,345 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 00:27:00,346 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:00,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:27:00,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-01-10 00:27:00,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3566. [2022-01-10 00:27:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3565 states have (on average 1.1778401122019635) internal successors, (4199), 3565 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 4199 transitions. [2022-01-10 00:27:00,400 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 4199 transitions. Word has length 153 [2022-01-10 00:27:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:00,400 INFO L470 AbstractCegarLoop]: Abstraction has 3566 states and 4199 transitions. [2022-01-10 00:27:00,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 4199 transitions. [2022-01-10 00:27:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 00:27:00,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:00,401 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:00,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:27:00,402 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:00,402 INFO L85 PathProgramCache]: Analyzing trace with hash -739842227, now seen corresponding path program 1 times [2022-01-10 00:27:00,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:00,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661168154] [2022-01-10 00:27:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:00,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:00,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:00,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661168154] [2022-01-10 00:27:00,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661168154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:00,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:00,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:00,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609825105] [2022-01-10 00:27:00,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:00,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:00,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:00,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:00,518 INFO L87 Difference]: Start difference. First operand 3566 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:02,006 INFO L93 Difference]: Finished difference Result 9263 states and 11078 transitions. [2022-01-10 00:27:02,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:02,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-01-10 00:27:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:02,021 INFO L225 Difference]: With dead ends: 9263 [2022-01-10 00:27:02,021 INFO L226 Difference]: Without dead ends: 5699 [2022-01-10 00:27:02,027 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 00:27:02,030 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:02,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:27:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2022-01-10 00:27:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5699. [2022-01-10 00:27:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.1597051597051597) internal successors, (6608), 5698 states have internal predecessors, (6608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 6608 transitions. [2022-01-10 00:27:02,108 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 6608 transitions. Word has length 166 [2022-01-10 00:27:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:02,109 INFO L470 AbstractCegarLoop]: Abstraction has 5699 states and 6608 transitions. [2022-01-10 00:27:02,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 6608 transitions. [2022-01-10 00:27:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 00:27:02,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:02,113 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:02,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:27:02,114 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2098323832, now seen corresponding path program 1 times [2022-01-10 00:27:02,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:02,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587493135] [2022-01-10 00:27:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:02,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:02,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:02,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587493135] [2022-01-10 00:27:02,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587493135] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:02,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879439521] [2022-01-10 00:27:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:02,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:02,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:27:02,235 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 00:27:02,242 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 00:27:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:02,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:27:02,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:27:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:02,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:27:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:03,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879439521] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:03,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:27:03,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-01-10 00:27:03,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165987254] [2022-01-10 00:27:03,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:03,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:03,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:27:03,224 INFO L87 Difference]: Start difference. First operand 5699 states and 6608 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:05,914 INFO L93 Difference]: Finished difference Result 16961 states and 19953 transitions. [2022-01-10 00:27:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:27:05,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2022-01-10 00:27:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:05,943 INFO L225 Difference]: With dead ends: 16961 [2022-01-10 00:27:05,944 INFO L226 Difference]: Without dead ends: 10384 [2022-01-10 00:27:05,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:27:05,957 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 1049 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:05,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 152 Invalid, 3227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 00:27:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2022-01-10 00:27:06,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10379. [2022-01-10 00:27:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 10378 states have (on average 1.1553285796878012) internal successors, (11990), 10378 states have internal predecessors, (11990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:06,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 11990 transitions. [2022-01-10 00:27:06,091 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 11990 transitions. Word has length 168 [2022-01-10 00:27:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:06,092 INFO L470 AbstractCegarLoop]: Abstraction has 10379 states and 11990 transitions. [2022-01-10 00:27:06,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 11990 transitions. [2022-01-10 00:27:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-01-10 00:27:06,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:06,094 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:06,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:27:06,311 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,SelfDestructingSolverStorable5 [2022-01-10 00:27:06,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1788847814, now seen corresponding path program 1 times [2022-01-10 00:27:06,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:06,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849828250] [2022-01-10 00:27:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:06,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 35 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:06,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:06,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849828250] [2022-01-10 00:27:06,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849828250] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:06,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570330249] [2022-01-10 00:27:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:06,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:27:06,426 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 00:27:06,428 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 00:27:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:06,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:27:06,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:27:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 164 proven. 73 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 00:27:07,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:27:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 00:27:07,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570330249] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:07,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:27:07,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2022-01-10 00:27:07,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992905506] [2022-01-10 00:27:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:07,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:07,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:07,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:27:07,470 INFO L87 Difference]: Start difference. First operand 10379 states and 11990 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:10,041 INFO L93 Difference]: Finished difference Result 28865 states and 33388 transitions. [2022-01-10 00:27:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:27:10,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 242 [2022-01-10 00:27:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:10,075 INFO L225 Difference]: With dead ends: 28865 [2022-01-10 00:27:10,075 INFO L226 Difference]: Without dead ends: 18488 [2022-01-10 00:27:10,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 479 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:27:10,087 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 883 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:10,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 171 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:27:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18488 states. [2022-01-10 00:27:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18488 to 18482. [2022-01-10 00:27:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 18481 states have (on average 1.1429035225366593) internal successors, (21122), 18481 states have internal predecessors, (21122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 21122 transitions. [2022-01-10 00:27:10,365 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 21122 transitions. Word has length 242 [2022-01-10 00:27:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:10,365 INFO L470 AbstractCegarLoop]: Abstraction has 18482 states and 21122 transitions. [2022-01-10 00:27:10,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 21122 transitions. [2022-01-10 00:27:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-01-10 00:27:10,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:10,369 INFO L514 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:10,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 00:27:10,587 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,SelfDestructingSolverStorable6 [2022-01-10 00:27:10,587 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash -91274060, now seen corresponding path program 1 times [2022-01-10 00:27:10,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:10,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782110339] [2022-01-10 00:27:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:10,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-01-10 00:27:10,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:10,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782110339] [2022-01-10 00:27:10,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782110339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:10,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:10,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:10,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648009855] [2022-01-10 00:27:10,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:10,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:10,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:10,709 INFO L87 Difference]: Start difference. First operand 18482 states and 21122 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:12,316 INFO L93 Difference]: Finished difference Result 50634 states and 57338 transitions. [2022-01-10 00:27:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:12,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 347 [2022-01-10 00:27:12,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:12,448 INFO L225 Difference]: With dead ends: 50634 [2022-01-10 00:27:12,449 INFO L226 Difference]: Without dead ends: 32154 [2022-01-10 00:27:12,462 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 00:27:12,462 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 426 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:12,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 668 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:27:12,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32154 states. [2022-01-10 00:27:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32154 to 29570. [2022-01-10 00:27:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29570 states, 29569 states have (on average 1.131117048260002) internal successors, (33446), 29569 states have internal predecessors, (33446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29570 states to 29570 states and 33446 transitions. [2022-01-10 00:27:12,765 INFO L78 Accepts]: Start accepts. Automaton has 29570 states and 33446 transitions. Word has length 347 [2022-01-10 00:27:12,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:12,766 INFO L470 AbstractCegarLoop]: Abstraction has 29570 states and 33446 transitions. [2022-01-10 00:27:12,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 29570 states and 33446 transitions. [2022-01-10 00:27:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-01-10 00:27:12,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:12,770 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2022-01-10 00:27:12,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:27:12,771 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:12,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1534862679, now seen corresponding path program 1 times [2022-01-10 00:27:12,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:12,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107788034] [2022-01-10 00:27:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:12,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-01-10 00:27:12,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:12,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107788034] [2022-01-10 00:27:12,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107788034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:12,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:12,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:12,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288352641] [2022-01-10 00:27:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:12,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:12,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:12,893 INFO L87 Difference]: Start difference. First operand 29570 states and 33446 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:14,664 INFO L93 Difference]: Finished difference Result 68519 states and 77907 transitions. [2022-01-10 00:27:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 348 [2022-01-10 00:27:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:14,715 INFO L225 Difference]: With dead ends: 68519 [2022-01-10 00:27:14,715 INFO L226 Difference]: Without dead ends: 38950 [2022-01-10 00:27:14,725 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 00:27:14,727 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 436 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:14,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 641 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:27:14,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38950 states. [2022-01-10 00:27:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38950 to 36818. [2022-01-10 00:27:15,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36818 states, 36817 states have (on average 1.1341228236955754) internal successors, (41755), 36817 states have internal predecessors, (41755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36818 states to 36818 states and 41755 transitions. [2022-01-10 00:27:15,125 INFO L78 Accepts]: Start accepts. Automaton has 36818 states and 41755 transitions. Word has length 348 [2022-01-10 00:27:15,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:15,125 INFO L470 AbstractCegarLoop]: Abstraction has 36818 states and 41755 transitions. [2022-01-10 00:27:15,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 36818 states and 41755 transitions. [2022-01-10 00:27:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-01-10 00:27:15,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:15,130 INFO L514 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 00:27:15,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:27:15,131 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2016019680, now seen corresponding path program 1 times [2022-01-10 00:27:15,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:15,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257800874] [2022-01-10 00:27:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:15,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 00:27:15,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:15,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257800874] [2022-01-10 00:27:15,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257800874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:15,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:15,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:27:15,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417305460] [2022-01-10 00:27:15,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:15,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:15,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:27:15,257 INFO L87 Difference]: Start difference. First operand 36818 states and 41755 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:17,882 INFO L93 Difference]: Finished difference Result 99668 states and 112882 transitions. [2022-01-10 00:27:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:27:17,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 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 352 [2022-01-10 00:27:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:18,032 INFO L225 Difference]: With dead ends: 99668 [2022-01-10 00:27:18,032 INFO L226 Difference]: Without dead ends: 62852 [2022-01-10 00:27:18,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:27:18,045 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 818 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:18,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 199 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:27:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62852 states. [2022-01-10 00:27:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62852 to 57736. [2022-01-10 00:27:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57736 states, 57735 states have (on average 1.1359660517883432) internal successors, (65585), 57735 states have internal predecessors, (65585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57736 states to 57736 states and 65585 transitions. [2022-01-10 00:27:18,757 INFO L78 Accepts]: Start accepts. Automaton has 57736 states and 65585 transitions. Word has length 352 [2022-01-10 00:27:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:18,757 INFO L470 AbstractCegarLoop]: Abstraction has 57736 states and 65585 transitions. [2022-01-10 00:27:18,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 57736 states and 65585 transitions. [2022-01-10 00:27:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-01-10 00:27:18,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:18,761 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:27:18,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:27:18,761 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:18,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:18,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1812329600, now seen corresponding path program 1 times [2022-01-10 00:27:18,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:18,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079168396] [2022-01-10 00:27:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:18,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:27:18,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:18,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079168396] [2022-01-10 00:27:18,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079168396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:18,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:18,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:18,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162856310] [2022-01-10 00:27:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:18,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:18,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:27:18,869 INFO L87 Difference]: Start difference. First operand 57736 states and 65585 transitions. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:21,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:21,555 INFO L93 Difference]: Finished difference Result 138521 states and 157086 transitions. [2022-01-10 00:27:21,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:27:21,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 353 [2022-01-10 00:27:21,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:21,654 INFO L225 Difference]: With dead ends: 138521 [2022-01-10 00:27:21,655 INFO L226 Difference]: Without dead ends: 78658 [2022-01-10 00:27:21,692 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 00:27:21,693 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 559 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:21,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 354 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:27:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78658 states. [2022-01-10 00:27:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78658 to 77348. [2022-01-10 00:27:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77348 states, 77347 states have (on average 1.1266888179244186) internal successors, (87146), 77347 states have internal predecessors, (87146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77348 states to 77348 states and 87146 transitions. [2022-01-10 00:27:22,820 INFO L78 Accepts]: Start accepts. Automaton has 77348 states and 87146 transitions. Word has length 353 [2022-01-10 00:27:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:22,821 INFO L470 AbstractCegarLoop]: Abstraction has 77348 states and 87146 transitions. [2022-01-10 00:27:22,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 77348 states and 87146 transitions. [2022-01-10 00:27:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-01-10 00:27:22,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:22,825 INFO L514 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:22,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:27:22,826 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:22,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash -426936410, now seen corresponding path program 1 times [2022-01-10 00:27:22,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:22,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936275335] [2022-01-10 00:27:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:22,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 311 proven. 82 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-10 00:27:23,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:23,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936275335] [2022-01-10 00:27:23,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936275335] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:27:23,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249515081] [2022-01-10 00:27:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:23,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:23,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:27:23,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:27:23,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:27:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:23,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 00:27:23,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:27:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 311 proven. 82 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-10 00:27:24,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:27:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 392 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-10 00:27:26,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249515081] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:27:26,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:27:26,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-01-10 00:27:26,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389385000] [2022-01-10 00:27:26,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:27:26,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 00:27:26,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 00:27:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 00:27:26,070 INFO L87 Difference]: Start difference. First operand 77348 states and 87146 transitions. Second operand has 10 states, 10 states have (on average 61.8) internal successors, (618), 9 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:31,678 INFO L93 Difference]: Finished difference Result 172198 states and 193885 transitions. [2022-01-10 00:27:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 00:27:31,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 61.8) internal successors, (618), 9 states have internal predecessors, (618), 0 states have call successors, (0), 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 367 [2022-01-10 00:27:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:31,788 INFO L225 Difference]: With dead ends: 172198 [2022-01-10 00:27:31,789 INFO L226 Difference]: Without dead ends: 94852 [2022-01-10 00:27:31,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 728 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-01-10 00:27:31,823 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 2907 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 7003 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 7900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 7003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:31,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2907 Valid, 496 Invalid, 7900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 7003 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-10 00:27:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94852 states. [2022-01-10 00:27:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94852 to 82427. [2022-01-10 00:27:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82427 states, 82426 states have (on average 1.12079926236867) internal successors, (92383), 82426 states have internal predecessors, (92383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82427 states to 82427 states and 92383 transitions. [2022-01-10 00:27:33,090 INFO L78 Accepts]: Start accepts. Automaton has 82427 states and 92383 transitions. Word has length 367 [2022-01-10 00:27:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:33,090 INFO L470 AbstractCegarLoop]: Abstraction has 82427 states and 92383 transitions. [2022-01-10 00:27:33,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.8) internal successors, (618), 9 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 82427 states and 92383 transitions. [2022-01-10 00:27:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-01-10 00:27:33,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:33,094 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 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] [2022-01-10 00:27:33,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 00:27:33,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:27:33,329 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash -473674346, now seen corresponding path program 1 times [2022-01-10 00:27:33,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:33,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017679109] [2022-01-10 00:27:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:33,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-01-10 00:27:33,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:33,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017679109] [2022-01-10 00:27:33,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017679109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:33,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:33,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:33,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896454945] [2022-01-10 00:27:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:33,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:33,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:33,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:33,542 INFO L87 Difference]: Start difference. First operand 82427 states and 92383 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:35,439 INFO L93 Difference]: Finished difference Result 189117 states and 212185 transitions. [2022-01-10 00:27:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:35,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 427 [2022-01-10 00:27:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:35,575 INFO L225 Difference]: With dead ends: 189117 [2022-01-10 00:27:35,575 INFO L226 Difference]: Without dead ends: 106690 [2022-01-10 00:27:35,616 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 00:27:35,616 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 438 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:35,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 352 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:27:35,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106690 states. [2022-01-10 00:27:36,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106690 to 101986. [2022-01-10 00:27:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101986 states, 101985 states have (on average 1.1074962004216307) internal successors, (112948), 101985 states have internal predecessors, (112948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101986 states to 101986 states and 112948 transitions. [2022-01-10 00:27:36,955 INFO L78 Accepts]: Start accepts. Automaton has 101986 states and 112948 transitions. Word has length 427 [2022-01-10 00:27:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:36,956 INFO L470 AbstractCegarLoop]: Abstraction has 101986 states and 112948 transitions. [2022-01-10 00:27:36,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 101986 states and 112948 transitions. [2022-01-10 00:27:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-01-10 00:27:36,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:36,961 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 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] [2022-01-10 00:27:36,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:27:36,962 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:36,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:36,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1546176435, now seen corresponding path program 1 times [2022-01-10 00:27:36,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:36,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976324918] [2022-01-10 00:27:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:36,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-01-10 00:27:37,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:37,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976324918] [2022-01-10 00:27:37,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976324918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:37,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:37,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:37,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308189369] [2022-01-10 00:27:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:37,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:37,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:37,339 INFO L87 Difference]: Start difference. First operand 101986 states and 112948 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:39,469 INFO L93 Difference]: Finished difference Result 216327 states and 239212 transitions. [2022-01-10 00:27:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:39,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 449 [2022-01-10 00:27:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:39,614 INFO L225 Difference]: With dead ends: 216327 [2022-01-10 00:27:39,615 INFO L226 Difference]: Without dead ends: 114343 [2022-01-10 00:27:39,661 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 00:27:39,661 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 335 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:39,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 768 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:27:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114343 states. [2022-01-10 00:27:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114343 to 110497. [2022-01-10 00:27:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110497 states, 110496 states have (on average 1.1011529829134086) internal successors, (121673), 110496 states have internal predecessors, (121673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:41,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110497 states to 110497 states and 121673 transitions. [2022-01-10 00:27:41,066 INFO L78 Accepts]: Start accepts. Automaton has 110497 states and 121673 transitions. Word has length 449 [2022-01-10 00:27:41,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:41,067 INFO L470 AbstractCegarLoop]: Abstraction has 110497 states and 121673 transitions. [2022-01-10 00:27:41,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:41,067 INFO L276 IsEmpty]: Start isEmpty. Operand 110497 states and 121673 transitions. [2022-01-10 00:27:41,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-01-10 00:27:41,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:41,073 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2022-01-10 00:27:41,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:27:41,073 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1080482528, now seen corresponding path program 1 times [2022-01-10 00:27:41,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:41,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500661199] [2022-01-10 00:27:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:41,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-01-10 00:27:41,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:41,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500661199] [2022-01-10 00:27:41,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500661199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:41,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:41,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:41,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128416474] [2022-01-10 00:27:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:41,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:41,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:41,425 INFO L87 Difference]: Start difference. First operand 110497 states and 121673 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:43,465 INFO L93 Difference]: Finished difference Result 231199 states and 254762 transitions. [2022-01-10 00:27:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:43,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 493 [2022-01-10 00:27:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:43,608 INFO L225 Difference]: With dead ends: 231199 [2022-01-10 00:27:43,609 INFO L226 Difference]: Without dead ends: 120704 [2022-01-10 00:27:43,630 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 00:27:43,631 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 496 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:43,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 704 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:27:43,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120704 states. [2022-01-10 00:27:44,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120704 to 120275. [2022-01-10 00:27:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120275 states, 120274 states have (on average 1.0958810715532867) internal successors, (131806), 120274 states have internal predecessors, (131806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120275 states to 120275 states and 131806 transitions. [2022-01-10 00:27:45,149 INFO L78 Accepts]: Start accepts. Automaton has 120275 states and 131806 transitions. Word has length 493 [2022-01-10 00:27:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:45,149 INFO L470 AbstractCegarLoop]: Abstraction has 120275 states and 131806 transitions. [2022-01-10 00:27:45,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:27:45,149 INFO L276 IsEmpty]: Start isEmpty. Operand 120275 states and 131806 transitions. [2022-01-10 00:27:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-01-10 00:27:45,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:45,154 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-10 00:27:45,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:27:45,155 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:45,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:45,155 INFO L85 PathProgramCache]: Analyzing trace with hash 734154034, now seen corresponding path program 1 times [2022-01-10 00:27:45,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:45,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622651465] [2022-01-10 00:27:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:45,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-01-10 00:27:45,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622651465] [2022-01-10 00:27:45,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622651465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:45,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:45,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:27:45,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30561247] [2022-01-10 00:27:45,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:45,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:27:45,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:27:45,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:27:45,536 INFO L87 Difference]: Start difference. First operand 120275 states and 131806 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)