/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:19:20,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:19:20,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:19:20,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:19:20,367 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 00:19:20,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:19:20,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:19:20,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:19:20,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:19:20,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:19:20,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:19:20,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:19:20,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:19:20,405 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:19:20,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:19:20,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:19:20,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:19:20,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:19:20,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:19:20,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:19:20,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:19:20,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:19:20,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:19:20,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:19:20,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:19:20,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:19:20,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:19:20,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:19:20,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:19:20,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:19:20,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:19:20,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:19:20,409 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:19:20,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:19:20,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:19:20,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:19:20,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:19:20,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:19:20,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:19:20,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:19:20,651 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:19:20,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59.c [2022-01-10 00:19:20,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71cd1aeba/cd4ef3189b254a8eb4fd9515bc65342a/FLAGdebe14e56 [2022-01-10 00:19:21,218 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:19:21,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59.c [2022-01-10 00:19:21,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71cd1aeba/cd4ef3189b254a8eb4fd9515bc65342a/FLAGdebe14e56 [2022-01-10 00:19:21,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71cd1aeba/cd4ef3189b254a8eb4fd9515bc65342a [2022-01-10 00:19:21,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:19:21,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:19:21,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:19:21,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:19:21,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:19:21,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:21" (1/1) ... [2022-01-10 00:19:21,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504987f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:21, skipping insertion in model container [2022-01-10 00:19:21,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:21" (1/1) ... [2022-01-10 00:19:21,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:19:21,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:19:21,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59.c[6635,6648] [2022-01-10 00:19:22,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:19:22,099 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:19:22,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59.c[6635,6648] [2022-01-10 00:19:22,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:19:22,294 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:19:22,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22 WrapperNode [2022-01-10 00:19:22,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:19:22,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:19:22,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:19:22,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:19:22,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,478 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1758 [2022-01-10 00:19:22,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:19:22,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:19:22,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:19:22,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:19:22,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:19:22,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:19:22,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:19:22,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:19:22,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (1/1) ... [2022-01-10 00:19:22,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:19:22,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:19:22,696 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 00:19:22,713 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 00:19:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:19:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:19:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:19:22,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:19:22,785 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:19:22,787 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:19:25,029 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:19:25,045 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:19:25,045 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:19:25,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:25 BoogieIcfgContainer [2022-01-10 00:19:25,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:19:25,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:19:25,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:19:25,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:19:25,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:19:21" (1/3) ... [2022-01-10 00:19:25,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6884fb53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:25, skipping insertion in model container [2022-01-10 00:19:25,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:22" (2/3) ... [2022-01-10 00:19:25,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6884fb53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:25, skipping insertion in model container [2022-01-10 00:19:25,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:25" (3/3) ... [2022-01-10 00:19:25,055 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label59.c [2022-01-10 00:19:25,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:19:25,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:19:25,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:19:25,126 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 00:19:25,126 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:19:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 00:19:25,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:25,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:25,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:25,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:25,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1425694346, now seen corresponding path program 1 times [2022-01-10 00:19:25,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:25,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341624375] [2022-01-10 00:19:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:25,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:25,436 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 00:19:25,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:25,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341624375] [2022-01-10 00:19:25,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341624375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:25,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:25,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:19:25,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509693303] [2022-01-10 00:19:25,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:25,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:25,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:25,476 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:27,602 INFO L93 Difference]: Finished difference Result 1197 states and 2163 transitions. [2022-01-10 00:19:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 00:19:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:27,618 INFO L225 Difference]: With dead ends: 1197 [2022-01-10 00:19:27,619 INFO L226 Difference]: Without dead ends: 694 [2022-01-10 00:19:27,623 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 00:19:27,625 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 364 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:27,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 114 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:19:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-01-10 00:19:27,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 684. [2022-01-10 00:19:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.718887262079063) internal successors, (1174), 683 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1174 transitions. [2022-01-10 00:19:27,699 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1174 transitions. Word has length 54 [2022-01-10 00:19:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:27,700 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1174 transitions. [2022-01-10 00:19:27,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1174 transitions. [2022-01-10 00:19:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 00:19:27,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:27,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:27,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:19:27,704 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:27,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1246806213, now seen corresponding path program 1 times [2022-01-10 00:19:27,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:27,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716297654] [2022-01-10 00:19:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:27,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:27,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:27,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716297654] [2022-01-10 00:19:27,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716297654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:27,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:27,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:19:27,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877479441] [2022-01-10 00:19:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:27,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:27,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:27,841 INFO L87 Difference]: Start difference. First operand 684 states and 1174 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:29,563 INFO L93 Difference]: Finished difference Result 1681 states and 2896 transitions. [2022-01-10 00:19:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:29,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-01-10 00:19:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:29,568 INFO L225 Difference]: With dead ends: 1681 [2022-01-10 00:19:29,569 INFO L226 Difference]: Without dead ends: 999 [2022-01-10 00:19:29,572 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 00:19:29,573 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 254 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:29,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 226 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:19:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-01-10 00:19:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 989. [2022-01-10 00:19:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 988 states have (on average 1.6194331983805668) internal successors, (1600), 988 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1600 transitions. [2022-01-10 00:19:29,607 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1600 transitions. Word has length 119 [2022-01-10 00:19:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:29,607 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1600 transitions. [2022-01-10 00:19:29,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1600 transitions. [2022-01-10 00:19:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 00:19:29,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:29,611 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:29,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:19:29,611 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:29,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash -214871010, now seen corresponding path program 1 times [2022-01-10 00:19:29,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:29,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285875761] [2022-01-10 00:19:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:29,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:29,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:29,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285875761] [2022-01-10 00:19:29,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285875761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:29,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:29,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:19:29,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905229812] [2022-01-10 00:19:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:29,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:29,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:29,685 INFO L87 Difference]: Start difference. First operand 989 states and 1600 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:31,174 INFO L93 Difference]: Finished difference Result 2575 states and 4255 transitions. [2022-01-10 00:19:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:31,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 00:19:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:31,181 INFO L225 Difference]: With dead ends: 2575 [2022-01-10 00:19:31,181 INFO L226 Difference]: Without dead ends: 1588 [2022-01-10 00:19:31,183 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 00:19:31,191 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 284 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:31,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 337 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:19:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2022-01-10 00:19:31,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1584. [2022-01-10 00:19:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 1.3986102337334176) internal successors, (2214), 1583 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2214 transitions. [2022-01-10 00:19:31,230 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2214 transitions. Word has length 120 [2022-01-10 00:19:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:31,231 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 2214 transitions. [2022-01-10 00:19:31,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2214 transitions. [2022-01-10 00:19:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 00:19:31,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:31,240 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:19:31,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:19:31,241 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:31,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1115564308, now seen corresponding path program 1 times [2022-01-10 00:19:31,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:31,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863490385] [2022-01-10 00:19:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:31,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:31,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:31,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863490385] [2022-01-10 00:19:31,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863490385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:31,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:31,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:19:31,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115185052] [2022-01-10 00:19:31,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:31,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:19:31,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:19:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:19:31,393 INFO L87 Difference]: Start difference. First operand 1584 states and 2214 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:33,656 INFO L93 Difference]: Finished difference Result 4090 states and 5888 transitions. [2022-01-10 00:19:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:19:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-10 00:19:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:33,665 INFO L225 Difference]: With dead ends: 4090 [2022-01-10 00:19:33,666 INFO L226 Difference]: Without dead ends: 2807 [2022-01-10 00:19:33,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:19:33,668 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 350 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:33,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 413 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:19:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2022-01-10 00:19:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2483. [2022-01-10 00:19:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2482 states have (on average 1.2961321514907334) internal successors, (3217), 2482 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3217 transitions. [2022-01-10 00:19:33,712 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3217 transitions. Word has length 124 [2022-01-10 00:19:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:33,712 INFO L470 AbstractCegarLoop]: Abstraction has 2483 states and 3217 transitions. [2022-01-10 00:19:33,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3217 transitions. [2022-01-10 00:19:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 00:19:33,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:33,714 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:33,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:19:33,714 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1684612182, now seen corresponding path program 1 times [2022-01-10 00:19:33,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:33,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914311268] [2022-01-10 00:19:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:33,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:33,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:33,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914311268] [2022-01-10 00:19:33,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914311268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:33,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:33,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:19:33,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614960842] [2022-01-10 00:19:33,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:33,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:33,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:33,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:33,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:33,803 INFO L87 Difference]: Start difference. First operand 2483 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:35,227 INFO L93 Difference]: Finished difference Result 7358 states and 9526 transitions. [2022-01-10 00:19:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:35,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-01-10 00:19:35,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:35,240 INFO L225 Difference]: With dead ends: 7358 [2022-01-10 00:19:35,241 INFO L226 Difference]: Without dead ends: 3681 [2022-01-10 00:19:35,245 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 00:19:35,246 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 290 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:35,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 612 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:19:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2022-01-10 00:19:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3681. [2022-01-10 00:19:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 1.1695652173913043) internal successors, (4304), 3680 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:35,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4304 transitions. [2022-01-10 00:19:35,320 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4304 transitions. Word has length 145 [2022-01-10 00:19:35,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:35,320 INFO L470 AbstractCegarLoop]: Abstraction has 3681 states and 4304 transitions. [2022-01-10 00:19:35,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4304 transitions. [2022-01-10 00:19:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-10 00:19:35,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:35,324 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:35,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:19:35,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:35,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:35,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1210416382, now seen corresponding path program 1 times [2022-01-10 00:19:35,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:35,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204488228] [2022-01-10 00:19:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:35,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:35,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:35,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204488228] [2022-01-10 00:19:35,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204488228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:35,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:35,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:19:35,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370565927] [2022-01-10 00:19:35,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:35,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:19:35,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:19:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:19:35,479 INFO L87 Difference]: Start difference. First operand 3681 states and 4304 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:37,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:37,685 INFO L93 Difference]: Finished difference Result 11273 states and 13177 transitions. [2022-01-10 00:19:37,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:19:37,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2022-01-10 00:19:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:37,705 INFO L225 Difference]: With dead ends: 11273 [2022-01-10 00:19:37,705 INFO L226 Difference]: Without dead ends: 7295 [2022-01-10 00:19:37,709 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 00:19:37,710 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 455 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:37,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 124 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:19:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7295 states. [2022-01-10 00:19:37,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7295 to 6081. [2022-01-10 00:19:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 6080 states have (on average 1.1837171052631579) internal successors, (7197), 6080 states have internal predecessors, (7197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 7197 transitions. [2022-01-10 00:19:37,818 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 7197 transitions. Word has length 287 [2022-01-10 00:19:37,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:37,819 INFO L470 AbstractCegarLoop]: Abstraction has 6081 states and 7197 transitions. [2022-01-10 00:19:37,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 7197 transitions. [2022-01-10 00:19:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-10 00:19:37,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:37,823 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:37,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:19:37,824 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1076396748, now seen corresponding path program 1 times [2022-01-10 00:19:37,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036839589] [2022-01-10 00:19:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:37,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:38,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:38,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036839589] [2022-01-10 00:19:38,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036839589] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:19:38,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016390875] [2022-01-10 00:19:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:38,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:19:38,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:19:38,079 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 00:19:38,119 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 00:19:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:38,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:19:38,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:19:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:38,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:19:38,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016390875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:38,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:19:38,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:19:38,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018006689] [2022-01-10 00:19:38,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:38,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:38,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:19:38,820 INFO L87 Difference]: Start difference. First operand 6081 states and 7197 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:40,117 INFO L93 Difference]: Finished difference Result 12161 states and 14395 transitions. [2022-01-10 00:19:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 324 [2022-01-10 00:19:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:40,132 INFO L225 Difference]: With dead ends: 12161 [2022-01-10 00:19:40,133 INFO L226 Difference]: Without dead ends: 6082 [2022-01-10 00:19:40,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:19:40,139 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 331 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:40,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 418 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:19:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6082 states. [2022-01-10 00:19:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6082 to 6079. [2022-01-10 00:19:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6079 states, 6078 states have (on average 1.1615663047054952) internal successors, (7060), 6078 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6079 states to 6079 states and 7060 transitions. [2022-01-10 00:19:40,248 INFO L78 Accepts]: Start accepts. Automaton has 6079 states and 7060 transitions. Word has length 324 [2022-01-10 00:19:40,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:40,252 INFO L470 AbstractCegarLoop]: Abstraction has 6079 states and 7060 transitions. [2022-01-10 00:19:40,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 7060 transitions. [2022-01-10 00:19:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-01-10 00:19:40,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:40,259 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:40,283 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 00:19:40,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:19:40,480 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:40,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1202719056, now seen corresponding path program 1 times [2022-01-10 00:19:40,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:40,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634610409] [2022-01-10 00:19:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:40,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-01-10 00:19:40,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:40,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634610409] [2022-01-10 00:19:40,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634610409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:40,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:40,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:19:40,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884449564] [2022-01-10 00:19:40,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:40,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:40,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:40,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:40,623 INFO L87 Difference]: Start difference. First operand 6079 states and 7060 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:41,615 INFO L93 Difference]: Finished difference Result 12455 states and 14421 transitions. [2022-01-10 00:19:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:41,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 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 337 [2022-01-10 00:19:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:41,634 INFO L225 Difference]: With dead ends: 12455 [2022-01-10 00:19:41,634 INFO L226 Difference]: Without dead ends: 6378 [2022-01-10 00:19:41,640 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 00:19:41,641 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:41,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 303 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:19:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6378 states. [2022-01-10 00:19:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6378 to 6378. [2022-01-10 00:19:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 6377 states have (on average 1.1543045319115572) internal successors, (7361), 6377 states have internal predecessors, (7361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 7361 transitions. [2022-01-10 00:19:41,775 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 7361 transitions. Word has length 337 [2022-01-10 00:19:41,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:41,776 INFO L470 AbstractCegarLoop]: Abstraction has 6378 states and 7361 transitions. [2022-01-10 00:19:41,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 7361 transitions. [2022-01-10 00:19:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-01-10 00:19:41,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:41,782 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:41,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:19:41,783 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1561735070, now seen corresponding path program 1 times [2022-01-10 00:19:41,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:41,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753767725] [2022-01-10 00:19:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:41,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 103 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:42,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:42,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753767725] [2022-01-10 00:19:42,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753767725] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:19:42,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737107226] [2022-01-10 00:19:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:42,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:19:42,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:19:42,059 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 00:19:42,099 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 00:19:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:42,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:19:42,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:19:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:42,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:19:42,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737107226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:42,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:19:42,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:19:42,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892507376] [2022-01-10 00:19:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:42,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:42,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:19:42,829 INFO L87 Difference]: Start difference. First operand 6378 states and 7361 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:44,003 INFO L93 Difference]: Finished difference Result 15450 states and 18175 transitions. [2022-01-10 00:19:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 411 [2022-01-10 00:19:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:44,022 INFO L225 Difference]: With dead ends: 15450 [2022-01-10 00:19:44,022 INFO L226 Difference]: Without dead ends: 9373 [2022-01-10 00:19:44,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:19:44,028 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 245 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:44,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 269 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:19:44,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2022-01-10 00:19:44,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 9367. [2022-01-10 00:19:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9367 states, 9366 states have (on average 1.1273756139226991) internal successors, (10559), 9366 states have internal predecessors, (10559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9367 states to 9367 states and 10559 transitions. [2022-01-10 00:19:44,178 INFO L78 Accepts]: Start accepts. Automaton has 9367 states and 10559 transitions. Word has length 411 [2022-01-10 00:19:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:44,179 INFO L470 AbstractCegarLoop]: Abstraction has 9367 states and 10559 transitions. [2022-01-10 00:19:44,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9367 states and 10559 transitions. [2022-01-10 00:19:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-01-10 00:19:44,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:44,192 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:44,215 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 00:19:44,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-10 00:19:44,404 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1389467139, now seen corresponding path program 1 times [2022-01-10 00:19:44,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:44,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072805041] [2022-01-10 00:19:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:44,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-01-10 00:19:44,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:44,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072805041] [2022-01-10 00:19:44,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072805041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:44,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:44,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:19:44,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357236380] [2022-01-10 00:19:44,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:44,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:19:44,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:19:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:19:44,624 INFO L87 Difference]: Start difference. First operand 9367 states and 10559 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:46,786 INFO L93 Difference]: Finished difference Result 22043 states and 24950 transitions. [2022-01-10 00:19:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:19:46,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 467 [2022-01-10 00:19:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:46,850 INFO L225 Difference]: With dead ends: 22043 [2022-01-10 00:19:46,851 INFO L226 Difference]: Without dead ends: 12678 [2022-01-10 00:19:46,857 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 00:19:46,857 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 433 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:46,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 123 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:19:46,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12678 states. [2022-01-10 00:19:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12678 to 9369. [2022-01-10 00:19:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9369 states, 9368 states have (on average 1.1258539709649873) internal successors, (10547), 9368 states have internal predecessors, (10547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9369 states to 9369 states and 10547 transitions. [2022-01-10 00:19:46,981 INFO L78 Accepts]: Start accepts. Automaton has 9369 states and 10547 transitions. Word has length 467 [2022-01-10 00:19:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:46,982 INFO L470 AbstractCegarLoop]: Abstraction has 9369 states and 10547 transitions. [2022-01-10 00:19:46,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 9369 states and 10547 transitions. [2022-01-10 00:19:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-01-10 00:19:46,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:46,989 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:46,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:19:46,990 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1124054340, now seen corresponding path program 1 times [2022-01-10 00:19:46,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:46,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368580586] [2022-01-10 00:19:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:46,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 262 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:47,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368580586] [2022-01-10 00:19:47,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368580586] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:19:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081204133] [2022-01-10 00:19:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:47,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:19:47,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:19:47,374 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 00:19:47,375 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 00:19:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:47,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:19:47,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:19:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-01-10 00:19:48,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:19:48,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081204133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:48,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:19:48,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-10 00:19:48,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123640227] [2022-01-10 00:19:48,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:48,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:48,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:48,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:48,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:19:48,393 INFO L87 Difference]: Start difference. First operand 9369 states and 10547 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:49,607 INFO L93 Difference]: Finished difference Result 22024 states and 24970 transitions. [2022-01-10 00:19:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:49,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 541 [2022-01-10 00:19:49,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:49,629 INFO L225 Difference]: With dead ends: 22024 [2022-01-10 00:19:49,629 INFO L226 Difference]: Without dead ends: 12956 [2022-01-10 00:19:49,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:19:49,640 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 362 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:49,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 445 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:19:49,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12956 states. [2022-01-10 00:19:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12956 to 10863. [2022-01-10 00:19:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 1.134045295525686) internal successors, (12318), 10862 states have internal predecessors, (12318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 12318 transitions. [2022-01-10 00:19:49,777 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 12318 transitions. Word has length 541 [2022-01-10 00:19:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:49,778 INFO L470 AbstractCegarLoop]: Abstraction has 10863 states and 12318 transitions. [2022-01-10 00:19:49,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 12318 transitions. [2022-01-10 00:19:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-01-10 00:19:49,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:49,788 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:49,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 00:19:50,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:19:50,008 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash 112753897, now seen corresponding path program 1 times [2022-01-10 00:19:50,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:50,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302668216] [2022-01-10 00:19:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:50,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 462 proven. 172 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-01-10 00:19:50,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:50,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302668216] [2022-01-10 00:19:50,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302668216] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:19:50,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076163692] [2022-01-10 00:19:50,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:50,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:19:50,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:19:50,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:19:50,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 00:19:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:50,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:19:50,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:19:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-01-10 00:19:51,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:19:51,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076163692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:51,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:19:51,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-10 00:19:51,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701941954] [2022-01-10 00:19:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:51,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:51,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:19:51,258 INFO L87 Difference]: Start difference. First operand 10863 states and 12318 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:52,248 INFO L93 Difference]: Finished difference Result 21430 states and 24339 transitions. [2022-01-10 00:19:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:52,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 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 587 [2022-01-10 00:19:52,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:52,265 INFO L225 Difference]: With dead ends: 21430 [2022-01-10 00:19:52,266 INFO L226 Difference]: Without dead ends: 10868 [2022-01-10 00:19:52,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:19:52,277 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 301 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:52,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 477 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:19:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10868 states. [2022-01-10 00:19:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10868 to 10562. [2022-01-10 00:19:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10562 states, 10561 states have (on average 1.1160874917147998) internal successors, (11787), 10561 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10562 states to 10562 states and 11787 transitions. [2022-01-10 00:19:52,413 INFO L78 Accepts]: Start accepts. Automaton has 10562 states and 11787 transitions. Word has length 587 [2022-01-10 00:19:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:52,413 INFO L470 AbstractCegarLoop]: Abstraction has 10562 states and 11787 transitions. [2022-01-10 00:19:52,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand 10562 states and 11787 transitions. [2022-01-10 00:19:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2022-01-10 00:19:52,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:52,422 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:19:52,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 00:19:52,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:19:52,638 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:52,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash -162764234, now seen corresponding path program 1 times [2022-01-10 00:19:52,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:52,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685483238] [2022-01-10 00:19:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:52,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 00:19:52,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:52,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685483238] [2022-01-10 00:19:52,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685483238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:52,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:52,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 00:19:52,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525579057] [2022-01-10 00:19:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:52,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:19:52,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:19:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:19:52,972 INFO L87 Difference]: Start difference. First operand 10562 states and 11787 transitions. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:54,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:54,209 INFO L93 Difference]: Finished difference Result 23907 states and 26958 transitions. [2022-01-10 00:19:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:19:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 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 591 [2022-01-10 00:19:54,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:54,234 INFO L225 Difference]: With dead ends: 23907 [2022-01-10 00:19:54,234 INFO L226 Difference]: Without dead ends: 13646 [2022-01-10 00:19:54,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 00:19:54,244 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 809 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:54,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 603 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:19:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13646 states. [2022-01-10 00:19:54,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13646 to 11757. [2022-01-10 00:19:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11757 states, 11756 states have (on average 1.114834977883634) internal successors, (13106), 11756 states have internal predecessors, (13106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11757 states to 11757 states and 13106 transitions. [2022-01-10 00:19:54,372 INFO L78 Accepts]: Start accepts. Automaton has 11757 states and 13106 transitions. Word has length 591 [2022-01-10 00:19:54,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:54,372 INFO L470 AbstractCegarLoop]: Abstraction has 11757 states and 13106 transitions. [2022-01-10 00:19:54,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:54,373 INFO L276 IsEmpty]: Start isEmpty. Operand 11757 states and 13106 transitions. [2022-01-10 00:19:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-01-10 00:19:54,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:54,382 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:54,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:19:54,383 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1759415692, now seen corresponding path program 1 times [2022-01-10 00:19:54,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:54,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975264768] [2022-01-10 00:19:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:54,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-01-10 00:19:54,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:54,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975264768] [2022-01-10 00:19:54,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975264768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:54,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:54,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:19:54,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028549804] [2022-01-10 00:19:54,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:54,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:54,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:54,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:54,690 INFO L87 Difference]: Start difference. First operand 11757 states and 13106 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:55,753 INFO L93 Difference]: Finished difference Result 23218 states and 25915 transitions. [2022-01-10 00:19:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:55,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 668 [2022-01-10 00:19:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:55,769 INFO L225 Difference]: With dead ends: 23218 [2022-01-10 00:19:55,769 INFO L226 Difference]: Without dead ends: 11762 [2022-01-10 00:19:55,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:55,778 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 298 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:55,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 138 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:19:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11762 states. [2022-01-10 00:19:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11757. [2022-01-10 00:19:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11757 states, 11756 states have (on average 1.1011398434841784) internal successors, (12945), 11756 states have internal predecessors, (12945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11757 states to 11757 states and 12945 transitions. [2022-01-10 00:19:55,911 INFO L78 Accepts]: Start accepts. Automaton has 11757 states and 12945 transitions. Word has length 668 [2022-01-10 00:19:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:55,912 INFO L470 AbstractCegarLoop]: Abstraction has 11757 states and 12945 transitions. [2022-01-10 00:19:55,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 11757 states and 12945 transitions. [2022-01-10 00:19:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2022-01-10 00:19:55,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:55,922 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:55,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:19:55,922 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:55,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:55,923 INFO L85 PathProgramCache]: Analyzing trace with hash 434787481, now seen corresponding path program 1 times [2022-01-10 00:19:55,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:55,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137822547] [2022-01-10 00:19:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:55,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 00:19:56,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137822547] [2022-01-10 00:19:56,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137822547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:56,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:56,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:19:56,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336067197] [2022-01-10 00:19:56,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:56,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:56,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:56,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:56,151 INFO L87 Difference]: Start difference. First operand 11757 states and 12945 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:57,669 INFO L93 Difference]: Finished difference Result 28919 states and 31735 transitions. [2022-01-10 00:19:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:57,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 670 [2022-01-10 00:19:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:57,690 INFO L225 Difference]: With dead ends: 28919 [2022-01-10 00:19:57,690 INFO L226 Difference]: Without dead ends: 17463 [2022-01-10 00:19:57,700 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 00:19:57,701 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 238 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:57,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 600 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:19:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17463 states. [2022-01-10 00:19:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17463 to 17152. [2022-01-10 00:19:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17152 states, 17151 states have (on average 1.0836685907527257) internal successors, (18586), 17151 states have internal predecessors, (18586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17152 states to 17152 states and 18586 transitions. [2022-01-10 00:19:57,908 INFO L78 Accepts]: Start accepts. Automaton has 17152 states and 18586 transitions. Word has length 670 [2022-01-10 00:19:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:57,909 INFO L470 AbstractCegarLoop]: Abstraction has 17152 states and 18586 transitions. [2022-01-10 00:19:57,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 17152 states and 18586 transitions. [2022-01-10 00:19:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2022-01-10 00:19:57,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:57,920 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:57,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:19:57,920 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1643896958, now seen corresponding path program 1 times [2022-01-10 00:19:57,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:57,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621994244] [2022-01-10 00:19:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:57,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-01-10 00:19:58,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:58,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621994244] [2022-01-10 00:19:58,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621994244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:19:58,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:19:58,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:19:58,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731835330] [2022-01-10 00:19:58,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:19:58,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:19:58,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:19:58,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:19:58,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:19:58,153 INFO L87 Difference]: Start difference. First operand 17152 states and 18586 transitions. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:19:59,323 INFO L93 Difference]: Finished difference Result 36097 states and 39306 transitions. [2022-01-10 00:19:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:19:59,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 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 679 [2022-01-10 00:19:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:19:59,340 INFO L225 Difference]: With dead ends: 36097 [2022-01-10 00:19:59,340 INFO L226 Difference]: Without dead ends: 19246 [2022-01-10 00:19:59,350 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 00:19:59,350 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 145 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:19:59,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 592 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:19:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19246 states. [2022-01-10 00:19:59,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19246 to 18947. [2022-01-10 00:19:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18947 states, 18946 states have (on average 1.0746331679510186) internal successors, (20360), 18946 states have internal predecessors, (20360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18947 states to 18947 states and 20360 transitions. [2022-01-10 00:19:59,561 INFO L78 Accepts]: Start accepts. Automaton has 18947 states and 20360 transitions. Word has length 679 [2022-01-10 00:19:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:19:59,562 INFO L470 AbstractCegarLoop]: Abstraction has 18947 states and 20360 transitions. [2022-01-10 00:19:59,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:19:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 18947 states and 20360 transitions. [2022-01-10 00:19:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-01-10 00:19:59,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:19:59,572 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:19:59,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:19:59,573 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:19:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:19:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1256968810, now seen corresponding path program 1 times [2022-01-10 00:19:59,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:19:59,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25843232] [2022-01-10 00:19:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:59,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:19:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:19:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 262 proven. 372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:19:59,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:19:59,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25843232] [2022-01-10 00:19:59,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25843232] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:19:59,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758018468] [2022-01-10 00:19:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:19:59,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:19:59,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:19:59,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:19:59,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 00:20:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:20:00,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 00:20:00,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:20:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-01-10 00:20:01,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:20:01,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758018468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:20:01,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:20:01,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-01-10 00:20:01,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150402305] [2022-01-10 00:20:01,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:20:01,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:20:01,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:20:01,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:20:01,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:20:01,060 INFO L87 Difference]: Start difference. First operand 18947 states and 20360 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:20:02,640 INFO L93 Difference]: Finished difference Result 45403 states and 48793 transitions. [2022-01-10 00:20:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:20:02,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 698 [2022-01-10 00:20:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:20:02,666 INFO L225 Difference]: With dead ends: 45403 [2022-01-10 00:20:02,666 INFO L226 Difference]: Without dead ends: 24066 [2022-01-10 00:20:02,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:20:02,682 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 346 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:20:02,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 439 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:20:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24066 states. [2022-01-10 00:20:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24066 to 20468. [2022-01-10 00:20:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20468 states, 20467 states have (on average 1.0633214442761518) internal successors, (21763), 20467 states have internal predecessors, (21763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 21763 transitions. [2022-01-10 00:20:02,965 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 21763 transitions. Word has length 698 [2022-01-10 00:20:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:20:02,965 INFO L470 AbstractCegarLoop]: Abstraction has 20468 states and 21763 transitions. [2022-01-10 00:20:02,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 21763 transitions. [2022-01-10 00:20:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2022-01-10 00:20:02,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:20:02,973 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:20:02,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 00:20:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-10 00:20:03,173 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:20:03,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:20:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1969280993, now seen corresponding path program 1 times [2022-01-10 00:20:03,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:20:03,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742241840] [2022-01-10 00:20:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:20:03,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:20:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:20:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-01-10 00:20:03,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:20:03,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742241840] [2022-01-10 00:20:03,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742241840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:20:03,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:20:03,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:20:03,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280547347] [2022-01-10 00:20:03,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:20:03,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:20:03,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:20:03,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:20:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:20:03,434 INFO L87 Difference]: Start difference. First operand 20468 states and 21763 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:20:05,542 INFO L93 Difference]: Finished difference Result 48435 states and 51387 transitions. [2022-01-10 00:20:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:20:05,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 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 706 [2022-01-10 00:20:05,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:20:05,573 INFO L225 Difference]: With dead ends: 48435 [2022-01-10 00:20:05,573 INFO L226 Difference]: Without dead ends: 27670 [2022-01-10 00:20:05,587 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 00:20:05,588 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 536 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:20:05,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 157 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:20:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27670 states. [2022-01-10 00:20:05,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27670 to 20468. [2022-01-10 00:20:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20468 states, 20467 states have (on average 1.0633214442761518) internal successors, (21763), 20467 states have internal predecessors, (21763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 21763 transitions. [2022-01-10 00:20:05,883 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 21763 transitions. Word has length 706 [2022-01-10 00:20:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:20:05,883 INFO L470 AbstractCegarLoop]: Abstraction has 20468 states and 21763 transitions. [2022-01-10 00:20:05,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 21763 transitions. [2022-01-10 00:20:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2022-01-10 00:20:05,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:20:05,891 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:20:05,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 00:20:05,891 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:20:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:20:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1608735074, now seen corresponding path program 1 times [2022-01-10 00:20:05,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:20:05,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127144773] [2022-01-10 00:20:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:20:05,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:20:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:20:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-01-10 00:20:06,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:20:06,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127144773] [2022-01-10 00:20:06,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127144773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:20:06,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:20:06,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:20:06,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607699755] [2022-01-10 00:20:06,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:20:06,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:20:06,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:20:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:20:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:20:06,111 INFO L87 Difference]: Start difference. First operand 20468 states and 21763 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:20:07,069 INFO L93 Difference]: Finished difference Result 40931 states and 43525 transitions. [2022-01-10 00:20:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:20:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 715 [2022-01-10 00:20:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:20:07,089 INFO L225 Difference]: With dead ends: 40931 [2022-01-10 00:20:07,089 INFO L226 Difference]: Without dead ends: 20764 [2022-01-10 00:20:07,098 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 00:20:07,099 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 464 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:20:07,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 70 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 00:20:07,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20764 states. [2022-01-10 00:20:07,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20764 to 20465. [2022-01-10 00:20:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20465 states, 20464 states have (on average 1.063184128225176) internal successors, (21757), 20464 states have internal predecessors, (21757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20465 states to 20465 states and 21757 transitions. [2022-01-10 00:20:07,329 INFO L78 Accepts]: Start accepts. Automaton has 20465 states and 21757 transitions. Word has length 715 [2022-01-10 00:20:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:20:07,329 INFO L470 AbstractCegarLoop]: Abstraction has 20465 states and 21757 transitions. [2022-01-10 00:20:07,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 20465 states and 21757 transitions. [2022-01-10 00:20:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2022-01-10 00:20:07,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:20:07,337 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:20:07,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 00:20:07,337 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:20:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:20:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2023005704, now seen corresponding path program 1 times [2022-01-10 00:20:07,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:20:07,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335941928] [2022-01-10 00:20:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:20:07,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:20:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:20:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-01-10 00:20:07,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:20:07,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335941928] [2022-01-10 00:20:07,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335941928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:20:07,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:20:07,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:20:07,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325768580] [2022-01-10 00:20:07,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:20:07,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:20:07,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:20:07,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:20:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:20:07,578 INFO L87 Difference]: Start difference. First operand 20465 states and 21757 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:20:08,842 INFO L93 Difference]: Finished difference Result 45411 states and 48390 transitions. [2022-01-10 00:20:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:20:08,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 726 [2022-01-10 00:20:08,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:20:08,873 INFO L225 Difference]: With dead ends: 45411 [2022-01-10 00:20:08,873 INFO L226 Difference]: Without dead ends: 25247 [2022-01-10 00:20:08,881 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 00:20:08,882 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 214 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:20:08,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 152 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:20:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25247 states. [2022-01-10 00:20:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25247 to 24350. [2022-01-10 00:20:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24350 states, 24349 states have (on average 1.0595917696825332) internal successors, (25800), 24349 states have internal predecessors, (25800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24350 states to 24350 states and 25800 transitions. [2022-01-10 00:20:09,119 INFO L78 Accepts]: Start accepts. Automaton has 24350 states and 25800 transitions. Word has length 726 [2022-01-10 00:20:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:20:09,120 INFO L470 AbstractCegarLoop]: Abstraction has 24350 states and 25800 transitions. [2022-01-10 00:20:09,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 24350 states and 25800 transitions. [2022-01-10 00:20:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2022-01-10 00:20:09,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:20:09,129 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:20:09,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 00:20:09,129 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:20:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:20:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash 959696480, now seen corresponding path program 1 times [2022-01-10 00:20:09,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:20:09,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504630711] [2022-01-10 00:20:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:20:09,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:20:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:20:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2022-01-10 00:20:09,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:20:09,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504630711] [2022-01-10 00:20:09,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504630711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:20:09,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:20:09,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:20:09,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068825249] [2022-01-10 00:20:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:20:09,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:20:09,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:20:09,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:20:09,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:20:09,398 INFO L87 Difference]: Start difference. First operand 24350 states and 25800 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:20:10,618 INFO L93 Difference]: Finished difference Result 55010 states and 58248 transitions. [2022-01-10 00:20:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:20:10,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 765 [2022-01-10 00:20:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:20:10,648 INFO L225 Difference]: With dead ends: 55010 [2022-01-10 00:20:10,648 INFO L226 Difference]: Without dead ends: 28868 [2022-01-10 00:20:10,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:20:10,662 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 341 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:20:10,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 448 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:20:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28868 states. [2022-01-10 00:20:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28868 to 23154. [2022-01-10 00:20:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23154 states, 23153 states have (on average 1.0587396881613613) internal successors, (24513), 23153 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23154 states to 23154 states and 24513 transitions. [2022-01-10 00:20:10,912 INFO L78 Accepts]: Start accepts. Automaton has 23154 states and 24513 transitions. Word has length 765 [2022-01-10 00:20:10,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:20:10,913 INFO L470 AbstractCegarLoop]: Abstraction has 23154 states and 24513 transitions. [2022-01-10 00:20:10,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 23154 states and 24513 transitions. [2022-01-10 00:20:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2022-01-10 00:20:10,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:20:10,925 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:20:10,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 00:20:10,926 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:20:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:20:10,926 INFO L85 PathProgramCache]: Analyzing trace with hash 398925817, now seen corresponding path program 1 times [2022-01-10 00:20:10,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:20:10,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140047776] [2022-01-10 00:20:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:20:10,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:20:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:20:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-01-10 00:20:11,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:20:11,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140047776] [2022-01-10 00:20:11,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140047776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:20:11,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:20:11,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:20:11,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258815513] [2022-01-10 00:20:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:20:11,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:20:11,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:20:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:20:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:20:11,192 INFO L87 Difference]: Start difference. First operand 23154 states and 24513 transitions. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:20:12,862 INFO L93 Difference]: Finished difference Result 54691 states and 57939 transitions. [2022-01-10 00:20:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:20:12,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 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 839 [2022-01-10 00:20:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:20:12,895 INFO L225 Difference]: With dead ends: 54691 [2022-01-10 00:20:12,896 INFO L226 Difference]: Without dead ends: 30042 [2022-01-10 00:20:12,911 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 00:20:12,911 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 653 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:20:12,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 140 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:20:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30042 states. [2022-01-10 00:20:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30042 to 22255. [2022-01-10 00:20:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22255 states, 22254 states have (on average 1.0552260267817022) internal successors, (23483), 22254 states have internal predecessors, (23483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22255 states to 22255 states and 23483 transitions. [2022-01-10 00:20:13,151 INFO L78 Accepts]: Start accepts. Automaton has 22255 states and 23483 transitions. Word has length 839 [2022-01-10 00:20:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:20:13,152 INFO L470 AbstractCegarLoop]: Abstraction has 22255 states and 23483 transitions. [2022-01-10 00:20:13,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 22255 states and 23483 transitions. [2022-01-10 00:20:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2022-01-10 00:20:13,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:20:13,164 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:20:13,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 00:20:13,164 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:20:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:20:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1068140884, now seen corresponding path program 1 times [2022-01-10 00:20:13,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:20:13,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76305232] [2022-01-10 00:20:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:20:13,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:20:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:20:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-01-10 00:20:13,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:20:13,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76305232] [2022-01-10 00:20:13,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76305232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:20:13,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:20:13,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:20:13,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296606864] [2022-01-10 00:20:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:20:13,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:20:13,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:20:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:20:13,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:20:13,581 INFO L87 Difference]: Start difference. First operand 22255 states and 23483 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:20:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:20:14,627 INFO L93 Difference]: Finished difference Result 45698 states and 48234 transitions. [2022-01-10 00:20:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:20:14,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 844 [2022-01-10 00:20:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:20:14,649 INFO L225 Difference]: With dead ends: 45698 [2022-01-10 00:20:14,649 INFO L226 Difference]: Without dead ends: 23744 [2022-01-10 00:20:14,662 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 00:20:14,662 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 312 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:20:14,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 543 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:20:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23744 states.