/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/Problem13_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:11:11,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:11:11,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:11:11,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:11:11,407 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 00:11:11,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:11:11,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:11:11,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:11:11,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:11:11,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:11:11,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:11:11,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:11:11,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:11:11,434 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:11:11,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:11:11,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:11:11,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:11:11,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:11:11,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:11:11,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:11:11,435 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:11:11,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:11:11,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:11:11,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:11:11,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:11:11,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:11:11,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:11:11,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:11:11,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:11:11,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:11:11,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:11:11,680 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:11:11,680 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:11:11,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2022-01-10 00:11:11,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61729bd8/0362811feb3f43deb105145fe151aa94/FLAG0df9bde7b [2022-01-10 00:11:12,359 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:11:12,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2022-01-10 00:11:12,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61729bd8/0362811feb3f43deb105145fe151aa94/FLAG0df9bde7b [2022-01-10 00:11:12,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61729bd8/0362811feb3f43deb105145fe151aa94 [2022-01-10 00:11:12,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:11:12,710 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:11:12,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:11:12,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:11:12,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:11:12,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:11:12" (1/1) ... [2022-01-10 00:11:12,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa292dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:12, skipping insertion in model container [2022-01-10 00:11:12,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:11:12" (1/1) ... [2022-01-10 00:11:12,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:11:12,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:11:13,091 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/Problem13_label42.c[9228,9241] [2022-01-10 00:11:13,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:11:13,670 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:11:13,690 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/Problem13_label42.c[9228,9241] [2022-01-10 00:11:14,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:11:14,175 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:11:14,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14 WrapperNode [2022-01-10 00:11:14,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:11:14,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:11:14,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:11:14,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:11:14,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:14,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:14,689 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-01-10 00:11:14,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:11:14,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:11:14,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:11:14,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:11:14,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:14,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:14,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:14,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:15,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:15,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:15,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:15,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:11:15,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:11:15,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:11:15,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:11:15,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (1/1) ... [2022-01-10 00:11:15,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:11:15,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:11:15,309 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 00:11:15,327 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 00:11:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:11:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:11:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:11:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:11:15,427 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:11:15,440 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:11:19,364 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:11:19,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:11:19,379 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:11:19,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:19 BoogieIcfgContainer [2022-01-10 00:11:19,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:11:19,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:11:19,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:11:19,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:11:19,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:11:12" (1/3) ... [2022-01-10 00:11:19,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632e590a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:11:19, skipping insertion in model container [2022-01-10 00:11:19,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:14" (2/3) ... [2022-01-10 00:11:19,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632e590a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:11:19, skipping insertion in model container [2022-01-10 00:11:19,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:19" (3/3) ... [2022-01-10 00:11:19,387 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label42.c [2022-01-10 00:11:19,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:11:19,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:11:19,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:11:19,431 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 00:11:19,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:11:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 00:11:19,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:19,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:19,459 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash 962891993, now seen corresponding path program 1 times [2022-01-10 00:11:19,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:19,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147795885] [2022-01-10 00:11:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:19,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:19,746 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 00:11:19,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:19,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147795885] [2022-01-10 00:11:19,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147795885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:19,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:19,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:19,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227702303] [2022-01-10 00:11:19,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:19,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:19,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:19,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:19,777 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:23,540 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2022-01-10 00:11:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:23,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 00:11:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:23,566 INFO L225 Difference]: With dead ends: 3121 [2022-01-10 00:11:23,566 INFO L226 Difference]: Without dead ends: 1944 [2022-01-10 00:11:23,573 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 00:11:23,576 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:23,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-10 00:11:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-01-10 00:11:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2022-01-10 00:11:23,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2022-01-10 00:11:23,696 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 65 [2022-01-10 00:11:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:23,698 INFO L470 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2022-01-10 00:11:23,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2022-01-10 00:11:23,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 00:11:23,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:23,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:11:23,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:11:23,706 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -746498798, now seen corresponding path program 1 times [2022-01-10 00:11:23,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:23,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993473535] [2022-01-10 00:11:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:23,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:23,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:23,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993473535] [2022-01-10 00:11:23,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993473535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:23,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:23,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:23,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673347456] [2022-01-10 00:11:23,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:23,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:23,841 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:26,893 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2022-01-10 00:11:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:26,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-01-10 00:11:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:26,915 INFO L225 Difference]: With dead ends: 5351 [2022-01-10 00:11:26,916 INFO L226 Difference]: Without dead ends: 3480 [2022-01-10 00:11:26,919 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 00:11:26,920 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:26,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:11:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2022-01-10 00:11:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2022-01-10 00:11:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2022-01-10 00:11:26,987 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 130 [2022-01-10 00:11:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:26,990 INFO L470 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2022-01-10 00:11:26,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2022-01-10 00:11:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 00:11:26,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:26,995 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:26,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:11:26,996 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:26,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:26,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1004753335, now seen corresponding path program 1 times [2022-01-10 00:11:26,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:26,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729994872] [2022-01-10 00:11:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:26,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:27,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:27,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729994872] [2022-01-10 00:11:27,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729994872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:27,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:27,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:27,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551389591] [2022-01-10 00:11:27,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:27,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:27,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:27,085 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:30,115 INFO L93 Difference]: Finished difference Result 10144 states and 15439 transitions. [2022-01-10 00:11:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-10 00:11:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:30,135 INFO L225 Difference]: With dead ends: 10144 [2022-01-10 00:11:30,135 INFO L226 Difference]: Without dead ends: 6667 [2022-01-10 00:11:30,142 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 00:11:30,146 INFO L933 BasicCegarLoop]: 745 mSDtfsCounter, 977 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:30,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 879 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:11:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2022-01-10 00:11:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6657. [2022-01-10 00:11:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2022-01-10 00:11:30,249 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 132 [2022-01-10 00:11:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:30,250 INFO L470 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2022-01-10 00:11:30,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2022-01-10 00:11:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 00:11:30,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:30,252 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:11:30,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:11:30,253 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash -894756506, now seen corresponding path program 1 times [2022-01-10 00:11:30,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:30,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360999372] [2022-01-10 00:11:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:30,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:30,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360999372] [2022-01-10 00:11:30,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360999372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:30,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:30,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:30,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865891079] [2022-01-10 00:11:30,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:30,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:30,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:30,350 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:33,175 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2022-01-10 00:11:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:33,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-01-10 00:11:33,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:33,211 INFO L225 Difference]: With dead ends: 19637 [2022-01-10 00:11:33,212 INFO L226 Difference]: Without dead ends: 12982 [2022-01-10 00:11:33,221 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 00:11:33,222 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 792 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:33,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 1162 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:11:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2022-01-10 00:11:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12964. [2022-01-10 00:11:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12964 states, 12963 states have (on average 1.2390650312427678) internal successors, (16062), 12963 states have internal predecessors, (16062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12964 states to 12964 states and 16062 transitions. [2022-01-10 00:11:33,431 INFO L78 Accepts]: Start accepts. Automaton has 12964 states and 16062 transitions. Word has length 138 [2022-01-10 00:11:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:33,432 INFO L470 AbstractCegarLoop]: Abstraction has 12964 states and 16062 transitions. [2022-01-10 00:11:33,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 12964 states and 16062 transitions. [2022-01-10 00:11:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 00:11:33,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:33,434 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:33,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:11:33,434 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:33,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1196327346, now seen corresponding path program 1 times [2022-01-10 00:11:33,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:33,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551434702] [2022-01-10 00:11:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:33,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:33,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:33,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551434702] [2022-01-10 00:11:33,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551434702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:33,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:33,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:33,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186843406] [2022-01-10 00:11:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:33,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:33,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:33,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:33,535 INFO L87 Difference]: Start difference. First operand 12964 states and 16062 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:36,134 INFO L93 Difference]: Finished difference Result 26713 states and 32924 transitions. [2022-01-10 00:11:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-01-10 00:11:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:36,160 INFO L225 Difference]: With dead ends: 26713 [2022-01-10 00:11:36,160 INFO L226 Difference]: Without dead ends: 13751 [2022-01-10 00:11:36,173 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 00:11:36,174 INFO L933 BasicCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:36,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:11:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13751 states. [2022-01-10 00:11:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 13751. [2022-01-10 00:11:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13751 states, 13750 states have (on average 1.2257454545454545) internal successors, (16854), 13750 states have internal predecessors, (16854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13751 states to 13751 states and 16854 transitions. [2022-01-10 00:11:36,348 INFO L78 Accepts]: Start accepts. Automaton has 13751 states and 16854 transitions. Word has length 154 [2022-01-10 00:11:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:36,348 INFO L470 AbstractCegarLoop]: Abstraction has 13751 states and 16854 transitions. [2022-01-10 00:11:36,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 13751 states and 16854 transitions. [2022-01-10 00:11:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 00:11:36,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:36,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:36,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:11:36,351 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash -62914249, now seen corresponding path program 1 times [2022-01-10 00:11:36,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:36,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611056735] [2022-01-10 00:11:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:36,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:36,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:36,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611056735] [2022-01-10 00:11:36,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611056735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:36,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:36,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:36,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347424413] [2022-01-10 00:11:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:36,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:36,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:36,425 INFO L87 Difference]: Start difference. First operand 13751 states and 16854 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:38,995 INFO L93 Difference]: Finished difference Result 26728 states and 32944 transitions. [2022-01-10 00:11:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:38,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-01-10 00:11:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:39,024 INFO L225 Difference]: With dead ends: 26728 [2022-01-10 00:11:39,024 INFO L226 Difference]: Without dead ends: 13766 [2022-01-10 00:11:39,035 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 00:11:39,036 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 1059 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:39,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 1309 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:11:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13766 states. [2022-01-10 00:11:39,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13766 to 13748. [2022-01-10 00:11:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13748 states, 13747 states have (on average 1.203753546228268) internal successors, (16548), 13747 states have internal predecessors, (16548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 16548 transitions. [2022-01-10 00:11:39,214 INFO L78 Accepts]: Start accepts. Automaton has 13748 states and 16548 transitions. Word has length 161 [2022-01-10 00:11:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:39,216 INFO L470 AbstractCegarLoop]: Abstraction has 13748 states and 16548 transitions. [2022-01-10 00:11:39,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 13748 states and 16548 transitions. [2022-01-10 00:11:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-10 00:11:39,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:39,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:39,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:11:39,222 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2120074091, now seen corresponding path program 1 times [2022-01-10 00:11:39,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:39,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046083462] [2022-01-10 00:11:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:39,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:39,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:39,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046083462] [2022-01-10 00:11:39,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046083462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:39,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:39,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:39,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015522774] [2022-01-10 00:11:39,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:39,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:39,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:39,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:39,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:39,323 INFO L87 Difference]: Start difference. First operand 13748 states and 16548 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:42,176 INFO L93 Difference]: Finished difference Result 33020 states and 40677 transitions. [2022-01-10 00:11:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:42,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2022-01-10 00:11:42,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:42,208 INFO L225 Difference]: With dead ends: 33020 [2022-01-10 00:11:42,208 INFO L226 Difference]: Without dead ends: 20061 [2022-01-10 00:11:42,222 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 00:11:42,223 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 881 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:42,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 945 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:11:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20061 states. [2022-01-10 00:11:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20061 to 20051. [2022-01-10 00:11:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20051 states, 20050 states have (on average 1.1791022443890273) internal successors, (23641), 20050 states have internal predecessors, (23641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 23641 transitions. [2022-01-10 00:11:42,424 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 23641 transitions. Word has length 243 [2022-01-10 00:11:42,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:42,424 INFO L470 AbstractCegarLoop]: Abstraction has 20051 states and 23641 transitions. [2022-01-10 00:11:42,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 23641 transitions. [2022-01-10 00:11:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-01-10 00:11:42,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:42,429 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:42,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:11:42,429 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:42,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash -71323228, now seen corresponding path program 1 times [2022-01-10 00:11:42,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:42,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792118325] [2022-01-10 00:11:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:42,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-01-10 00:11:42,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792118325] [2022-01-10 00:11:42,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792118325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:42,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:42,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:42,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496668965] [2022-01-10 00:11:42,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:42,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:42,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:42,509 INFO L87 Difference]: Start difference. First operand 20051 states and 23641 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:45,573 INFO L93 Difference]: Finished difference Result 45632 states and 54873 transitions. [2022-01-10 00:11:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:45,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 332 [2022-01-10 00:11:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:45,611 INFO L225 Difference]: With dead ends: 45632 [2022-01-10 00:11:45,611 INFO L226 Difference]: Without dead ends: 26370 [2022-01-10 00:11:45,628 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 00:11:45,629 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 968 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:45,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 787 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:11:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26370 states. [2022-01-10 00:11:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26370 to 26358. [2022-01-10 00:11:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26358 states, 26357 states have (on average 1.1839738968774898) internal successors, (31206), 26357 states have internal predecessors, (31206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26358 states to 26358 states and 31206 transitions. [2022-01-10 00:11:45,906 INFO L78 Accepts]: Start accepts. Automaton has 26358 states and 31206 transitions. Word has length 332 [2022-01-10 00:11:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:45,911 INFO L470 AbstractCegarLoop]: Abstraction has 26358 states and 31206 transitions. [2022-01-10 00:11:45,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:45,911 INFO L276 IsEmpty]: Start isEmpty. Operand 26358 states and 31206 transitions. [2022-01-10 00:11:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-01-10 00:11:45,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:45,919 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:45,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:11:45,919 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:45,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1335303458, now seen corresponding path program 1 times [2022-01-10 00:11:45,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:45,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61513243] [2022-01-10 00:11:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:45,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-01-10 00:11:46,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:46,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61513243] [2022-01-10 00:11:46,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61513243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:46,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:46,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:46,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635171575] [2022-01-10 00:11:46,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:46,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:46,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:46,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:46,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:46,033 INFO L87 Difference]: Start difference. First operand 26358 states and 31206 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:49,041 INFO L93 Difference]: Finished difference Result 61391 states and 72386 transitions. [2022-01-10 00:11:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:49,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 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 384 [2022-01-10 00:11:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:49,083 INFO L225 Difference]: With dead ends: 61391 [2022-01-10 00:11:49,083 INFO L226 Difference]: Without dead ends: 35822 [2022-01-10 00:11:49,095 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 00:11:49,099 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 728 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:49,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1226 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:11:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35822 states. [2022-01-10 00:11:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35822 to 35812. [2022-01-10 00:11:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35812 states, 35811 states have (on average 1.1522716483761972) internal successors, (41264), 35811 states have internal predecessors, (41264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35812 states to 35812 states and 41264 transitions. [2022-01-10 00:11:49,463 INFO L78 Accepts]: Start accepts. Automaton has 35812 states and 41264 transitions. Word has length 384 [2022-01-10 00:11:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:49,464 INFO L470 AbstractCegarLoop]: Abstraction has 35812 states and 41264 transitions. [2022-01-10 00:11:49,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 35812 states and 41264 transitions. [2022-01-10 00:11:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-01-10 00:11:49,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:49,470 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 00:11:49,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:11:49,470 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash -607606650, now seen corresponding path program 1 times [2022-01-10 00:11:49,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:49,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383504596] [2022-01-10 00:11:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:49,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 251 proven. 75 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 00:11:49,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:49,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383504596] [2022-01-10 00:11:49,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383504596] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:11:49,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306514369] [2022-01-10 00:11:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:49,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:11:49,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:11:49,619 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 00:11:49,621 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 00:11:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:49,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:11:49,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:11:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-01-10 00:11:50,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:11:50,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306514369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:50,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:11:50,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-01-10 00:11:50,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940273587] [2022-01-10 00:11:50,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:50,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:50,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:11:50,377 INFO L87 Difference]: Start difference. First operand 35812 states and 41264 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:53,692 INFO L93 Difference]: Finished difference Result 101690 states and 117796 transitions. [2022-01-10 00:11:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 392 [2022-01-10 00:11:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:53,773 INFO L225 Difference]: With dead ends: 101690 [2022-01-10 00:11:53,773 INFO L226 Difference]: Without dead ends: 66667 [2022-01-10 00:11:53,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:11:53,801 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 1043 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:53,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 1139 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 00:11:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66667 states. [2022-01-10 00:11:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66667 to 65861. [2022-01-10 00:11:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65861 states, 65860 states have (on average 1.1312784694807168) internal successors, (74506), 65860 states have internal predecessors, (74506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65861 states to 65861 states and 74506 transitions. [2022-01-10 00:11:54,694 INFO L78 Accepts]: Start accepts. Automaton has 65861 states and 74506 transitions. Word has length 392 [2022-01-10 00:11:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:54,694 INFO L470 AbstractCegarLoop]: Abstraction has 65861 states and 74506 transitions. [2022-01-10 00:11:54,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 65861 states and 74506 transitions. [2022-01-10 00:11:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-01-10 00:11:54,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:54,701 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:54,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:11:54,915 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,SelfDestructingSolverStorable9 [2022-01-10 00:11:54,916 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:54,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1692395044, now seen corresponding path program 1 times [2022-01-10 00:11:54,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:54,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658810537] [2022-01-10 00:11:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:54,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-01-10 00:11:55,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:55,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658810537] [2022-01-10 00:11:55,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658810537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:55,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:55,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:55,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123232224] [2022-01-10 00:11:55,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:55,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:55,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:55,181 INFO L87 Difference]: Start difference. First operand 65861 states and 74506 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:59,042 INFO L93 Difference]: Finished difference Result 161805 states and 183745 transitions. [2022-01-10 00:11:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:59,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 392 [2022-01-10 00:11:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:59,168 INFO L225 Difference]: With dead ends: 161805 [2022-01-10 00:11:59,169 INFO L226 Difference]: Without dead ends: 96733 [2022-01-10 00:11:59,180 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 00:11:59,180 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 975 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:59,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 464 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 00:11:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96733 states. [2022-01-10 00:12:00,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96733 to 95829. [2022-01-10 00:12:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95829 states, 95828 states have (on average 1.1344596568852527) internal successors, (108713), 95828 states have internal predecessors, (108713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:12:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95829 states to 95829 states and 108713 transitions. [2022-01-10 00:12:00,233 INFO L78 Accepts]: Start accepts. Automaton has 95829 states and 108713 transitions. Word has length 392 [2022-01-10 00:12:00,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:12:00,234 INFO L470 AbstractCegarLoop]: Abstraction has 95829 states and 108713 transitions. [2022-01-10 00:12:00,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:12:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 95829 states and 108713 transitions. [2022-01-10 00:12:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-01-10 00:12:00,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:12:00,244 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-01-10 00:12:00,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:12:00,244 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:12:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:12:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash -373450363, now seen corresponding path program 1 times [2022-01-10 00:12:00,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:12:00,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528969321] [2022-01-10 00:12:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:12:00,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:12:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:12:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-01-10 00:12:00,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:12:00,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528969321] [2022-01-10 00:12:00,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528969321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:12:00,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:12:00,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:12:00,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087533880] [2022-01-10 00:12:00,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:12:00,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:12:00,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:12:00,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:12:00,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:12:00,328 INFO L87 Difference]: Start difference. First operand 95829 states and 108713 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:12:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:12:07,519 INFO L93 Difference]: Finished difference Result 267516 states and 305475 transitions. [2022-01-10 00:12:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:12:07,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 00:12:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:12:07,775 INFO L225 Difference]: With dead ends: 267516 [2022-01-10 00:12:07,775 INFO L226 Difference]: Without dead ends: 173263 [2022-01-10 00:12:07,832 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 00:12:07,833 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1739 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 6737 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 7843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 6737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:12:07,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 786 Invalid, 7843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 6737 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-01-10 00:12:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173263 states. [2022-01-10 00:12:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173263 to 173067. [2022-01-10 00:12:09,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173067 states, 173066 states have (on average 1.1325274750673153) internal successors, (196002), 173066 states have internal predecessors, (196002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:12:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173067 states to 173067 states and 196002 transitions. [2022-01-10 00:12:10,176 INFO L78 Accepts]: Start accepts. Automaton has 173067 states and 196002 transitions. Word has length 427 [2022-01-10 00:12:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:12:10,176 INFO L470 AbstractCegarLoop]: Abstraction has 173067 states and 196002 transitions. [2022-01-10 00:12:10,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:12:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 173067 states and 196002 transitions. [2022-01-10 00:12:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-01-10 00:12:10,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:12:10,194 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:12:10,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:12:10,194 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:12:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:12:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1281024426, now seen corresponding path program 1 times [2022-01-10 00:12:10,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:12:10,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208759565] [2022-01-10 00:12:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:12:10,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:12:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:12:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 429 proven. 113 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-01-10 00:12:10,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:12:10,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208759565] [2022-01-10 00:12:10,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208759565] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:12:10,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356772646] [2022-01-10 00:12:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:12:10,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:12:10,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:12:10,612 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 00:12:10,614 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 00:12:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:12:10,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 00:12:10,747 INFO L286 TraceCheckSpWp]: Computing forward predicates...