/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:23:59,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:23:59,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:23:59,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:23:59,463 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 00:23:59,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:23:59,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:23:59,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:23:59,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:23:59,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:23:59,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:23:59,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:23:59,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:23:59,482 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:23:59,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:23:59,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:23:59,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:23:59,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:23:59,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:23:59,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:23:59,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:23:59,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:23:59,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:23:59,484 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:23:59,484 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:23:59,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:23:59,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:23:59,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:23:59,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:23:59,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:23:59,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:23:59,680 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:23:59,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15.c [2022-01-10 00:23:59,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cf54072/b34467b7a569409db47b8491f1971fed/FLAGee1dc014e [2022-01-10 00:24:00,209 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:24:00,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15.c [2022-01-10 00:24:00,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cf54072/b34467b7a569409db47b8491f1971fed/FLAGee1dc014e [2022-01-10 00:24:00,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cf54072/b34467b7a569409db47b8491f1971fed [2022-01-10 00:24:00,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:24:00,468 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:24:00,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:24:00,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:24:00,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:24:00,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:24:00" (1/1) ... [2022-01-10 00:24:00,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5359c89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:00, skipping insertion in model container [2022-01-10 00:24:00,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:24:00" (1/1) ... [2022-01-10 00:24:00,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:24:00,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:24:00,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15.c[5490,5503] [2022-01-10 00:24:01,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:24:01,106 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:24:01,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15.c[5490,5503] [2022-01-10 00:24:01,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:24:01,345 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:24:01,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01 WrapperNode [2022-01-10 00:24:01,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:24:01,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:24:01,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:24:01,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:24:01,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,579 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:24:01,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:24:01,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:24:01,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:24:01,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:24:01,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:24:01,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:24:01,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:24:01,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:24:01,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (1/1) ... [2022-01-10 00:24:01,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:24:01,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:24:01,994 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 00:24:02,012 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 00:24:02,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:24:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:24:02,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:24:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:24:02,077 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:24:02,078 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:24:04,376 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:24:04,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:24:04,386 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:24:04,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:04 BoogieIcfgContainer [2022-01-10 00:24:04,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:24:04,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:24:04,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:24:04,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:24:04,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:24:00" (1/3) ... [2022-01-10 00:24:04,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e794ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:24:04, skipping insertion in model container [2022-01-10 00:24:04,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:01" (2/3) ... [2022-01-10 00:24:04,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e794ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:24:04, skipping insertion in model container [2022-01-10 00:24:04,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:04" (3/3) ... [2022-01-10 00:24:04,397 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label15.c [2022-01-10 00:24:04,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:24:04,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:24:04,432 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:24:04,436 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 00:24:04,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:24:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 00:24:04,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:04,457 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] [2022-01-10 00:24:04,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1318097310, now seen corresponding path program 1 times [2022-01-10 00:24:04,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:04,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106585328] [2022-01-10 00:24:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:04,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:04,615 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 00:24:04,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:04,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106585328] [2022-01-10 00:24:04,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106585328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:04,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:04,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:24:04,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108286617] [2022-01-10 00:24:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:04,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:04,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:04,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:04,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:04,647 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:06,956 INFO L93 Difference]: Finished difference Result 1680 states and 3074 transitions. [2022-01-10 00:24:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:06,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-10 00:24:06,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:06,973 INFO L225 Difference]: With dead ends: 1680 [2022-01-10 00:24:06,973 INFO L226 Difference]: Without dead ends: 1011 [2022-01-10 00:24:06,977 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 00:24:06,979 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 545 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:06,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 220 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:24:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-01-10 00:24:07,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 996. [2022-01-10 00:24:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.735678391959799) internal successors, (1727), 995 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1727 transitions. [2022-01-10 00:24:07,033 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1727 transitions. Word has length 36 [2022-01-10 00:24:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:07,033 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1727 transitions. [2022-01-10 00:24:07,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1727 transitions. [2022-01-10 00:24:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 00:24:07,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:07,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:07,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:24:07,036 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:07,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1022017857, now seen corresponding path program 1 times [2022-01-10 00:24:07,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:07,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275763286] [2022-01-10 00:24:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:07,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:07,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:07,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275763286] [2022-01-10 00:24:07,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275763286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:07,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:07,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:24:07,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213467663] [2022-01-10 00:24:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:07,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:07,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:07,141 INFO L87 Difference]: Start difference. First operand 996 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:09,031 INFO L93 Difference]: Finished difference Result 2871 states and 5025 transitions. [2022-01-10 00:24:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:09,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-01-10 00:24:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:09,042 INFO L225 Difference]: With dead ends: 2871 [2022-01-10 00:24:09,043 INFO L226 Difference]: Without dead ends: 1877 [2022-01-10 00:24:09,046 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 00:24:09,047 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:09,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 520 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:24:09,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-01-10 00:24:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1870. [2022-01-10 00:24:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.4719101123595506) internal successors, (2751), 1869 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2751 transitions. [2022-01-10 00:24:09,080 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2751 transitions. Word has length 101 [2022-01-10 00:24:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:09,081 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 2751 transitions. [2022-01-10 00:24:09,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2751 transitions. [2022-01-10 00:24:09,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 00:24:09,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:09,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:09,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:24:09,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:09,089 INFO L85 PathProgramCache]: Analyzing trace with hash 688837838, now seen corresponding path program 1 times [2022-01-10 00:24:09,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:09,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41135298] [2022-01-10 00:24:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:09,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:09,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:09,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41135298] [2022-01-10 00:24:09,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41135298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:09,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:09,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:09,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997103277] [2022-01-10 00:24:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:09,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:24:09,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:24:09,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:24:09,213 INFO L87 Difference]: Start difference. First operand 1870 states and 2751 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:12,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:12,460 INFO L93 Difference]: Finished difference Result 6370 states and 9654 transitions. [2022-01-10 00:24:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:24:12,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 00:24:12,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:12,472 INFO L225 Difference]: With dead ends: 6370 [2022-01-10 00:24:12,472 INFO L226 Difference]: Without dead ends: 4502 [2022-01-10 00:24:12,474 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 00:24:12,480 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 1084 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 893 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:12,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 193 Invalid, 3475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [893 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 00:24:12,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2022-01-10 00:24:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 4497. [2022-01-10 00:24:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4496 states have (on average 1.4270462633451957) internal successors, (6416), 4496 states have internal predecessors, (6416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 6416 transitions. [2022-01-10 00:24:12,551 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 6416 transitions. Word has length 106 [2022-01-10 00:24:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:12,551 INFO L470 AbstractCegarLoop]: Abstraction has 4497 states and 6416 transitions. [2022-01-10 00:24:12,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 6416 transitions. [2022-01-10 00:24:12,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 00:24:12,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:12,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:12,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:24:12,553 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 785603270, now seen corresponding path program 1 times [2022-01-10 00:24:12,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:12,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788136712] [2022-01-10 00:24:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:12,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:12,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:12,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788136712] [2022-01-10 00:24:12,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788136712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:12,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:12,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:24:12,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617526360] [2022-01-10 00:24:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:12,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:12,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:12,614 INFO L87 Difference]: Start difference. First operand 4497 states and 6416 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:14,401 INFO L93 Difference]: Finished difference Result 11974 states and 17431 transitions. [2022-01-10 00:24:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:14,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-10 00:24:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:14,421 INFO L225 Difference]: With dead ends: 11974 [2022-01-10 00:24:14,421 INFO L226 Difference]: Without dead ends: 7479 [2022-01-10 00:24:14,428 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 00:24:14,434 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 364 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:14,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 497 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:24:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2022-01-10 00:24:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 7046. [2022-01-10 00:24:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7046 states, 7045 states have (on average 1.3349893541518807) internal successors, (9405), 7045 states have internal predecessors, (9405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 9405 transitions. [2022-01-10 00:24:14,526 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 9405 transitions. Word has length 142 [2022-01-10 00:24:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:14,527 INFO L470 AbstractCegarLoop]: Abstraction has 7046 states and 9405 transitions. [2022-01-10 00:24:14,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 9405 transitions. [2022-01-10 00:24:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 00:24:14,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:14,530 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:24:14,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:24:14,530 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1939867091, now seen corresponding path program 1 times [2022-01-10 00:24:14,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:14,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492704294] [2022-01-10 00:24:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:14,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 00:24:14,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:14,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492704294] [2022-01-10 00:24:14,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492704294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:14,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:14,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:24:14,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10337974] [2022-01-10 00:24:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:14,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:14,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:14,604 INFO L87 Difference]: Start difference. First operand 7046 states and 9405 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:16,226 INFO L93 Difference]: Finished difference Result 18773 states and 25521 transitions. [2022-01-10 00:24:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:16,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 171 [2022-01-10 00:24:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:16,253 INFO L225 Difference]: With dead ends: 18773 [2022-01-10 00:24:16,253 INFO L226 Difference]: Without dead ends: 11300 [2022-01-10 00:24:16,262 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 00:24:16,262 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:16,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:24:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11300 states. [2022-01-10 00:24:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 8323. [2022-01-10 00:24:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 8322 states have (on average 1.2595529920692141) internal successors, (10482), 8322 states have internal predecessors, (10482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 10482 transitions. [2022-01-10 00:24:16,380 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 10482 transitions. Word has length 171 [2022-01-10 00:24:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:16,381 INFO L470 AbstractCegarLoop]: Abstraction has 8323 states and 10482 transitions. [2022-01-10 00:24:16,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 10482 transitions. [2022-01-10 00:24:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 00:24:16,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:16,382 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:24:16,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:24:16,383 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:16,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2143225073, now seen corresponding path program 1 times [2022-01-10 00:24:16,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:16,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570424238] [2022-01-10 00:24:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:16,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:16,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:16,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570424238] [2022-01-10 00:24:16,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570424238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:16,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:16,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 00:24:16,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388914540] [2022-01-10 00:24:16,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:16,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:24:16,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:16,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:24:16,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:24:16,544 INFO L87 Difference]: Start difference. First operand 8323 states and 10482 transitions. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:18,537 INFO L93 Difference]: Finished difference Result 21360 states and 27400 transitions. [2022-01-10 00:24:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:24:18,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2022-01-10 00:24:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:18,558 INFO L225 Difference]: With dead ends: 21360 [2022-01-10 00:24:18,559 INFO L226 Difference]: Without dead ends: 13039 [2022-01-10 00:24:18,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:24:18,568 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 1164 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:18,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 834 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:24:18,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13039 states. [2022-01-10 00:24:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13039 to 12996. [2022-01-10 00:24:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12996 states, 12995 states have (on average 1.2273951519815314) internal successors, (15950), 12995 states have internal predecessors, (15950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12996 states to 12996 states and 15950 transitions. [2022-01-10 00:24:18,744 INFO L78 Accepts]: Start accepts. Automaton has 12996 states and 15950 transitions. Word has length 184 [2022-01-10 00:24:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:18,744 INFO L470 AbstractCegarLoop]: Abstraction has 12996 states and 15950 transitions. [2022-01-10 00:24:18,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 12996 states and 15950 transitions. [2022-01-10 00:24:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-10 00:24:18,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:18,748 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 00:24:18,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:24:18,748 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash -525885613, now seen corresponding path program 1 times [2022-01-10 00:24:18,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:18,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748829541] [2022-01-10 00:24:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:18,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-01-10 00:24:18,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:18,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748829541] [2022-01-10 00:24:18,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748829541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:18,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:18,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:18,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149354540] [2022-01-10 00:24:18,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:18,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:18,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:18,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:18,866 INFO L87 Difference]: Start difference. First operand 12996 states and 15950 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:20,724 INFO L93 Difference]: Finished difference Result 31503 states and 38604 transitions. [2022-01-10 00:24:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:20,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 289 [2022-01-10 00:24:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:20,750 INFO L225 Difference]: With dead ends: 31503 [2022-01-10 00:24:20,750 INFO L226 Difference]: Without dead ends: 17659 [2022-01-10 00:24:20,763 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 00:24:20,764 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 408 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:20,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 952 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:24:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17659 states. [2022-01-10 00:24:20,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17659 to 12122. [2022-01-10 00:24:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12122 states, 12121 states have (on average 1.1796881445425296) internal successors, (14299), 12121 states have internal predecessors, (14299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12122 states to 12122 states and 14299 transitions. [2022-01-10 00:24:20,910 INFO L78 Accepts]: Start accepts. Automaton has 12122 states and 14299 transitions. Word has length 289 [2022-01-10 00:24:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:20,911 INFO L470 AbstractCegarLoop]: Abstraction has 12122 states and 14299 transitions. [2022-01-10 00:24:20,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 12122 states and 14299 transitions. [2022-01-10 00:24:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-01-10 00:24:20,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:20,914 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:20,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:24:20,914 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1232130859, now seen corresponding path program 1 times [2022-01-10 00:24:20,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:20,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022243322] [2022-01-10 00:24:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:20,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-01-10 00:24:21,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:21,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022243322] [2022-01-10 00:24:21,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022243322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:21,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:21,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:21,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733727814] [2022-01-10 00:24:21,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:21,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:21,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:21,041 INFO L87 Difference]: Start difference. First operand 12122 states and 14299 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:22,685 INFO L93 Difference]: Finished difference Result 31047 states and 36683 transitions. [2022-01-10 00:24:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:22,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 306 [2022-01-10 00:24:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:22,707 INFO L225 Difference]: With dead ends: 31047 [2022-01-10 00:24:22,708 INFO L226 Difference]: Without dead ends: 18927 [2022-01-10 00:24:22,717 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 00:24:22,717 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 457 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:22,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 405 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:24:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18927 states. [2022-01-10 00:24:22,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18927 to 16794. [2022-01-10 00:24:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16794 states, 16793 states have (on average 1.1678675638658964) internal successors, (19612), 16793 states have internal predecessors, (19612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16794 states to 16794 states and 19612 transitions. [2022-01-10 00:24:22,892 INFO L78 Accepts]: Start accepts. Automaton has 16794 states and 19612 transitions. Word has length 306 [2022-01-10 00:24:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:22,892 INFO L470 AbstractCegarLoop]: Abstraction has 16794 states and 19612 transitions. [2022-01-10 00:24:22,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:22,893 INFO L276 IsEmpty]: Start isEmpty. Operand 16794 states and 19612 transitions. [2022-01-10 00:24:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-01-10 00:24:22,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:22,899 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:22,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:24:22,900 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1461489624, now seen corresponding path program 1 times [2022-01-10 00:24:22,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:22,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791647564] [2022-01-10 00:24:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:22,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 00:24:23,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:23,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791647564] [2022-01-10 00:24:23,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791647564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:23,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:23,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:23,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521918949] [2022-01-10 00:24:23,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:23,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:23,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:23,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:23,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:23,021 INFO L87 Difference]: Start difference. First operand 16794 states and 19612 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:24,647 INFO L93 Difference]: Finished difference Result 40447 states and 47562 transitions. [2022-01-10 00:24:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:24,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 350 [2022-01-10 00:24:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:24,671 INFO L225 Difference]: With dead ends: 40447 [2022-01-10 00:24:24,671 INFO L226 Difference]: Without dead ends: 22805 [2022-01-10 00:24:24,688 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 00:24:24,690 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 382 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:24,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 920 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:24:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22805 states. [2022-01-10 00:24:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22805 to 22370. [2022-01-10 00:24:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22370 states, 22369 states have (on average 1.1468550225758862) internal successors, (25654), 22369 states have internal predecessors, (25654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22370 states to 22370 states and 25654 transitions. [2022-01-10 00:24:24,981 INFO L78 Accepts]: Start accepts. Automaton has 22370 states and 25654 transitions. Word has length 350 [2022-01-10 00:24:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:24,981 INFO L470 AbstractCegarLoop]: Abstraction has 22370 states and 25654 transitions. [2022-01-10 00:24:24,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 22370 states and 25654 transitions. [2022-01-10 00:24:24,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-01-10 00:24:24,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:24,987 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:24,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:24:24,987 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:24,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash -397845730, now seen corresponding path program 1 times [2022-01-10 00:24:24,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:24,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330340408] [2022-01-10 00:24:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:24,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:24:25,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:25,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330340408] [2022-01-10 00:24:25,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330340408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:25,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:25,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:25,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583599411] [2022-01-10 00:24:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:25,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:25,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:25,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:25,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:25,088 INFO L87 Difference]: Start difference. First operand 22370 states and 25654 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:26,777 INFO L93 Difference]: Finished difference Result 55832 states and 64075 transitions. [2022-01-10 00:24:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:26,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 357 [2022-01-10 00:24:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:26,817 INFO L225 Difference]: With dead ends: 55832 [2022-01-10 00:24:26,817 INFO L226 Difference]: Without dead ends: 33024 [2022-01-10 00:24:26,834 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 00:24:26,835 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 397 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:26,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 763 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:24:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33024 states. [2022-01-10 00:24:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33024 to 28338. [2022-01-10 00:24:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28338 states, 28337 states have (on average 1.144545999929421) internal successors, (32433), 28337 states have internal predecessors, (32433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28338 states to 28338 states and 32433 transitions. [2022-01-10 00:24:27,295 INFO L78 Accepts]: Start accepts. Automaton has 28338 states and 32433 transitions. Word has length 357 [2022-01-10 00:24:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:27,296 INFO L470 AbstractCegarLoop]: Abstraction has 28338 states and 32433 transitions. [2022-01-10 00:24:27,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 28338 states and 32433 transitions. [2022-01-10 00:24:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-01-10 00:24:27,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:27,304 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:27,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:24:27,305 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1041601103, now seen corresponding path program 1 times [2022-01-10 00:24:27,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:27,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588061843] [2022-01-10 00:24:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:27,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-01-10 00:24:27,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:27,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588061843] [2022-01-10 00:24:27,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588061843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:27,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:27,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:27,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086785656] [2022-01-10 00:24:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:27,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:27,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:27,458 INFO L87 Difference]: Start difference. First operand 28338 states and 32433 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:29,315 INFO L93 Difference]: Finished difference Result 70298 states and 80376 transitions. [2022-01-10 00:24:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:29,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 432 [2022-01-10 00:24:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:29,354 INFO L225 Difference]: With dead ends: 70298 [2022-01-10 00:24:29,354 INFO L226 Difference]: Without dead ends: 41095 [2022-01-10 00:24:29,366 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 00:24:29,367 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 447 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:29,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 651 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:24:29,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41095 states. [2022-01-10 00:24:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41095 to 36829. [2022-01-10 00:24:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36829 states, 36828 states have (on average 1.1286249592701205) internal successors, (41565), 36828 states have internal predecessors, (41565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:29,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36829 states to 36829 states and 41565 transitions. [2022-01-10 00:24:29,850 INFO L78 Accepts]: Start accepts. Automaton has 36829 states and 41565 transitions. Word has length 432 [2022-01-10 00:24:29,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:29,850 INFO L470 AbstractCegarLoop]: Abstraction has 36829 states and 41565 transitions. [2022-01-10 00:24:29,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:29,851 INFO L276 IsEmpty]: Start isEmpty. Operand 36829 states and 41565 transitions. [2022-01-10 00:24:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-01-10 00:24:29,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:29,858 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:24:29,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:24:29,858 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:29,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1448528408, now seen corresponding path program 1 times [2022-01-10 00:24:29,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:29,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319887823] [2022-01-10 00:24:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:29,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 00:24:30,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:30,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319887823] [2022-01-10 00:24:30,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319887823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:30,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:30,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:24:30,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859404830] [2022-01-10 00:24:30,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:30,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:24:30,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:24:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:24:30,074 INFO L87 Difference]: Start difference. First operand 36829 states and 41565 transitions. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:32,586 INFO L93 Difference]: Finished difference Result 89878 states and 101625 transitions. [2022-01-10 00:24:32,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:24:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 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 436 [2022-01-10 00:24:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:32,641 INFO L225 Difference]: With dead ends: 89878 [2022-01-10 00:24:32,641 INFO L226 Difference]: Without dead ends: 53051 [2022-01-10 00:24:32,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:24:32,657 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 816 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:32,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 203 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:24:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53051 states. [2022-01-10 00:24:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53051 to 47506. [2022-01-10 00:24:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47506 states, 47505 states have (on average 1.1353331228291759) internal successors, (53934), 47505 states have internal predecessors, (53934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47506 states to 47506 states and 53934 transitions. [2022-01-10 00:24:33,198 INFO L78 Accepts]: Start accepts. Automaton has 47506 states and 53934 transitions. Word has length 436 [2022-01-10 00:24:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:33,199 INFO L470 AbstractCegarLoop]: Abstraction has 47506 states and 53934 transitions. [2022-01-10 00:24:33,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 47506 states and 53934 transitions. [2022-01-10 00:24:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-01-10 00:24:33,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:33,207 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:24:33,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:24:33,207 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:33,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash 510641702, now seen corresponding path program 1 times [2022-01-10 00:24:33,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:33,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032852328] [2022-01-10 00:24:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:33,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-01-10 00:24:33,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:33,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032852328] [2022-01-10 00:24:33,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032852328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:33,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:33,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:33,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740006214] [2022-01-10 00:24:33,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:33,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:33,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:33,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:33,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:33,330 INFO L87 Difference]: Start difference. First operand 47506 states and 53934 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:35,109 INFO L93 Difference]: Finished difference Result 113738 states and 129584 transitions. [2022-01-10 00:24:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2022-01-10 00:24:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:35,190 INFO L225 Difference]: With dead ends: 113738 [2022-01-10 00:24:35,190 INFO L226 Difference]: Without dead ends: 66234 [2022-01-10 00:24:35,220 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 00:24:35,221 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 395 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:35,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 317 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:24:35,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66234 states. [2022-01-10 00:24:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66234 to 64943. [2022-01-10 00:24:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64943 states, 64942 states have (on average 1.1276985617936004) internal successors, (73235), 64942 states have internal predecessors, (73235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64943 states to 64943 states and 73235 transitions. [2022-01-10 00:24:36,073 INFO L78 Accepts]: Start accepts. Automaton has 64943 states and 73235 transitions. Word has length 455 [2022-01-10 00:24:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:36,073 INFO L470 AbstractCegarLoop]: Abstraction has 64943 states and 73235 transitions. [2022-01-10 00:24:36,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 64943 states and 73235 transitions. [2022-01-10 00:24:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-01-10 00:24:36,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:36,093 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:24:36,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:24:36,093 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:36,094 INFO L85 PathProgramCache]: Analyzing trace with hash -526620874, now seen corresponding path program 1 times [2022-01-10 00:24:36,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:36,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381316836] [2022-01-10 00:24:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:36,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-01-10 00:24:36,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:36,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381316836] [2022-01-10 00:24:36,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381316836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:36,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:36,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:36,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114263659] [2022-01-10 00:24:36,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:36,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:36,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:36,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:36,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:36,240 INFO L87 Difference]: Start difference. First operand 64943 states and 73235 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:38,142 INFO L93 Difference]: Finished difference Result 143076 states and 160759 transitions. [2022-01-10 00:24:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 456 [2022-01-10 00:24:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:38,227 INFO L225 Difference]: With dead ends: 143076 [2022-01-10 00:24:38,227 INFO L226 Difference]: Without dead ends: 77710 [2022-01-10 00:24:38,261 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 00:24:38,261 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 368 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:38,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 811 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:24:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77710 states. [2022-01-10 00:24:39,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77710 to 75139. [2022-01-10 00:24:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75139 states, 75138 states have (on average 1.1158534962335969) internal successors, (83843), 75138 states have internal predecessors, (83843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75139 states to 75139 states and 83843 transitions. [2022-01-10 00:24:39,160 INFO L78 Accepts]: Start accepts. Automaton has 75139 states and 83843 transitions. Word has length 456 [2022-01-10 00:24:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:39,160 INFO L470 AbstractCegarLoop]: Abstraction has 75139 states and 83843 transitions. [2022-01-10 00:24:39,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 75139 states and 83843 transitions. [2022-01-10 00:24:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-01-10 00:24:39,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:39,168 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:24:39,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:24:39,169 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:39,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash 102580086, now seen corresponding path program 1 times [2022-01-10 00:24:39,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:39,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597759739] [2022-01-10 00:24:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:39,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-01-10 00:24:39,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:39,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597759739] [2022-01-10 00:24:39,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597759739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:39,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:39,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:39,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117145366] [2022-01-10 00:24:39,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:39,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:39,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:39,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:39,300 INFO L87 Difference]: Start difference. First operand 75139 states and 83843 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:41,078 INFO L93 Difference]: Finished difference Result 159645 states and 178328 transitions. [2022-01-10 00:24:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:41,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2022-01-10 00:24:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:41,178 INFO L225 Difference]: With dead ends: 159645 [2022-01-10 00:24:41,178 INFO L226 Difference]: Without dead ends: 84508 [2022-01-10 00:24:41,220 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 00:24:41,220 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 339 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:41,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 764 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:24:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84508 states. [2022-01-10 00:24:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84508 to 75960. [2022-01-10 00:24:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75960 states, 75959 states have (on average 1.1049645203333378) internal successors, (83932), 75959 states have internal predecessors, (83932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75960 states to 75960 states and 83932 transitions. [2022-01-10 00:24:42,184 INFO L78 Accepts]: Start accepts. Automaton has 75960 states and 83932 transitions. Word has length 474 [2022-01-10 00:24:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:42,184 INFO L470 AbstractCegarLoop]: Abstraction has 75960 states and 83932 transitions. [2022-01-10 00:24:42,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 75960 states and 83932 transitions. [2022-01-10 00:24:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-01-10 00:24:42,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:42,193 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:42,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:24:42,193 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 984657420, now seen corresponding path program 1 times [2022-01-10 00:24:42,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:42,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770182621] [2022-01-10 00:24:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:42,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-01-10 00:24:42,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:42,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770182621] [2022-01-10 00:24:42,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770182621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:42,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:42,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:42,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557200416] [2022-01-10 00:24:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:42,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:42,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:42,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:42,324 INFO L87 Difference]: Start difference. First operand 75960 states and 83932 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:44,433 INFO L93 Difference]: Finished difference Result 167253 states and 184599 transitions. [2022-01-10 00:24:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:44,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 479 [2022-01-10 00:24:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:44,542 INFO L225 Difference]: With dead ends: 167253 [2022-01-10 00:24:44,542 INFO L226 Difference]: Without dead ends: 91295 [2022-01-10 00:24:44,585 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 00:24:44,585 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 291 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:44,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 815 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:24:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91295 states. [2022-01-10 00:24:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91295 to 90422. [2022-01-10 00:24:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90422 states, 90421 states have (on average 1.096393536899614) internal successors, (99137), 90421 states have internal predecessors, (99137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90422 states to 90422 states and 99137 transitions. [2022-01-10 00:24:45,747 INFO L78 Accepts]: Start accepts. Automaton has 90422 states and 99137 transitions. Word has length 479 [2022-01-10 00:24:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:45,748 INFO L470 AbstractCegarLoop]: Abstraction has 90422 states and 99137 transitions. [2022-01-10 00:24:45,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 90422 states and 99137 transitions. [2022-01-10 00:24:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-01-10 00:24:45,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:45,757 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:24:45,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:24:45,757 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:45,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:45,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1207529746, now seen corresponding path program 1 times [2022-01-10 00:24:45,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:45,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888280609] [2022-01-10 00:24:45,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:45,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-01-10 00:24:45,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:45,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888280609] [2022-01-10 00:24:45,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888280609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:45,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:45,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:45,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962105072] [2022-01-10 00:24:45,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:45,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:45,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:45,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:45,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:45,871 INFO L87 Difference]: Start difference. First operand 90422 states and 99137 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:47,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:47,954 INFO L93 Difference]: Finished difference Result 191937 states and 210688 transitions. [2022-01-10 00:24:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 479 [2022-01-10 00:24:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:48,268 INFO L225 Difference]: With dead ends: 191937 [2022-01-10 00:24:48,269 INFO L226 Difference]: Without dead ends: 101087 [2022-01-10 00:24:48,311 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 00:24:48,312 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 436 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:48,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 249 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:24:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101087 states. [2022-01-10 00:24:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101087 to 98082. [2022-01-10 00:24:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98082 states, 98081 states have (on average 1.0972665449985217) internal successors, (107621), 98081 states have internal predecessors, (107621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98082 states to 98082 states and 107621 transitions. [2022-01-10 00:24:49,487 INFO L78 Accepts]: Start accepts. Automaton has 98082 states and 107621 transitions. Word has length 479 [2022-01-10 00:24:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:49,487 INFO L470 AbstractCegarLoop]: Abstraction has 98082 states and 107621 transitions. [2022-01-10 00:24:49,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 98082 states and 107621 transitions. [2022-01-10 00:24:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-01-10 00:24:49,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:49,494 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:49,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 00:24:49,495 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:49,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1207972705, now seen corresponding path program 1 times [2022-01-10 00:24:49,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:49,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393736098] [2022-01-10 00:24:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:49,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 17 proven. 84 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-10 00:24:49,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:49,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393736098] [2022-01-10 00:24:49,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393736098] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:24:49,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620459424] [2022-01-10 00:24:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:49,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:24:49,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:24:49,865 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 00:24:49,866 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 00:24:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:50,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:24:50,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:24:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-10 00:24:50,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:24:50,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620459424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:50,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:24:50,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:24:50,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967868007] [2022-01-10 00:24:50,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:50,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:50,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:24:50,625 INFO L87 Difference]: Start difference. First operand 98082 states and 107621 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:52,588 INFO L93 Difference]: Finished difference Result 195307 states and 214212 transitions. [2022-01-10 00:24:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:52,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 482 [2022-01-10 00:24:52,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:52,715 INFO L225 Difference]: With dead ends: 195307 [2022-01-10 00:24:52,715 INFO L226 Difference]: Without dead ends: 96798 [2022-01-10 00:24:52,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:24:52,764 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 439 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:52,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 329 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:24:52,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96798 states. [2022-01-10 00:24:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96798 to 90834. [2022-01-10 00:24:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90834 states, 90833 states have (on average 1.0878425241927494) internal successors, (98812), 90833 states have internal predecessors, (98812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90834 states to 90834 states and 98812 transitions. [2022-01-10 00:24:53,823 INFO L78 Accepts]: Start accepts. Automaton has 90834 states and 98812 transitions. Word has length 482 [2022-01-10 00:24:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:53,823 INFO L470 AbstractCegarLoop]: Abstraction has 90834 states and 98812 transitions. [2022-01-10 00:24:53,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 90834 states and 98812 transitions. [2022-01-10 00:24:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-01-10 00:24:53,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:53,832 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:53,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:24:54,032 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,SelfDestructingSolverStorable17 [2022-01-10 00:24:54,035 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash 618495215, now seen corresponding path program 1 times [2022-01-10 00:24:54,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:54,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289891094] [2022-01-10 00:24:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:54,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 532 proven. 108 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:24:54,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:54,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289891094] [2022-01-10 00:24:54,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289891094] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:24:54,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541318994] [2022-01-10 00:24:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:54,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:24:54,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:24:54,395 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 00:24:54,396 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 00:24:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:54,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 00:24:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:24:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-01-10 00:24:55,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:24:55,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541318994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:55,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:24:55,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-01-10 00:24:55,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880874142] [2022-01-10 00:24:55,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:55,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:24:55,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:24:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:24:55,727 INFO L87 Difference]: Start difference. First operand 90834 states and 98812 transitions. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:57,706 INFO L93 Difference]: Finished difference Result 125000 states and 136353 transitions. [2022-01-10 00:24:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:24:57,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 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 513 [2022-01-10 00:24:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:57,832 INFO L225 Difference]: With dead ends: 125000 [2022-01-10 00:24:57,832 INFO L226 Difference]: Without dead ends: 124998 [2022-01-10 00:24:57,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:24:57,848 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 389 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 806 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:57,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 214 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1216 Invalid, 0 Unknown, 806 Unchecked, 1.5s Time] [2022-01-10 00:24:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124998 states. [2022-01-10 00:24:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124998 to 111347. [2022-01-10 00:24:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111347 states, 111346 states have (on average 1.091714116358019) internal successors, (121558), 111346 states have internal predecessors, (121558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111347 states to 111347 states and 121558 transitions. [2022-01-10 00:24:59,183 INFO L78 Accepts]: Start accepts. Automaton has 111347 states and 121558 transitions. Word has length 513 [2022-01-10 00:24:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:59,183 INFO L470 AbstractCegarLoop]: Abstraction has 111347 states and 121558 transitions. [2022-01-10 00:24:59,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 111347 states and 121558 transitions. [2022-01-10 00:24:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2022-01-10 00:24:59,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:59,192 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:59,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 00:24:59,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:24:59,571 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:59,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1842067513, now seen corresponding path program 1 times [2022-01-10 00:24:59,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:59,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986208384] [2022-01-10 00:24:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:59,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 336 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:59,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:59,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986208384] [2022-01-10 00:24:59,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986208384] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:24:59,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200342769] [2022-01-10 00:24:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:59,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:24:59,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:24:59,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:24:59,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:24:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:59,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 00:24:59,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:25:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 254 proven. 82 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 00:25:00,801 INFO L328 TraceCheckSpWp]: Computing backward predicates...