/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:30:15,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:30:15,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:30:15,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:30:15,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:30:15,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:30:15,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:30:15,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:30:15,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:30:15,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:30:15,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:30:15,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:30:15,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:30:15,289 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:30:15,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:30:15,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:30:15,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:30:15,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:30:15,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:30:15,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:30:15,290 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:30:15,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:30:15,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:30:15,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:30:15,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:30:15,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:30:15,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:30:15,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:30:15,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:30:15,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:30:15,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:30:15,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:30:15,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:30:15,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:30:15,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:30:15,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:30:15,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:30:15,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:30:15,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:30:15,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:30:15,522 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:30:15,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40.c [2022-01-10 00:30:15,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177e9e5ab/8961b3fdad2c405694d7bafb5fce8a4c/FLAG85cbccbd8 [2022-01-10 00:30:16,181 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:30:16,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label40.c [2022-01-10 00:30:16,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177e9e5ab/8961b3fdad2c405694d7bafb5fce8a4c/FLAG85cbccbd8 [2022-01-10 00:30:16,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177e9e5ab/8961b3fdad2c405694d7bafb5fce8a4c [2022-01-10 00:30:16,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:30:16,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:30:16,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:30:16,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:30:16,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:30:16,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:30:16" (1/1) ... [2022-01-10 00:30:16,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494b342c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:16, skipping insertion in model container [2022-01-10 00:30:16,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:30:16" (1/1) ... [2022-01-10 00:30:16,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:30:16,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:30:16,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label40.c[4742,4755] [2022-01-10 00:30:17,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:30:17,240 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:30:17,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label40.c[4742,4755] [2022-01-10 00:30:17,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:30:17,531 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:30:17,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17 WrapperNode [2022-01-10 00:30:17,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:30:17,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:30:17,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:30:17,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:30:17,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,755 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-01-10 00:30:17,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:30:17,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:30:17,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:30:17,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:30:17,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:30:17,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:30:17,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:30:17,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:30:17,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (1/1) ... [2022-01-10 00:30:17,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:30:17,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:30:17,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:30:17,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 00:30:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:30:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:30:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:30:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:30:18,075 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:30:18,076 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:30:20,573 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:30:20,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:30:20,591 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:30:20,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:30:20 BoogieIcfgContainer [2022-01-10 00:30:20,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:30:20,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:30:20,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:30:20,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:30:20,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:30:16" (1/3) ... [2022-01-10 00:30:20,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a46adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:30:20, skipping insertion in model container [2022-01-10 00:30:20,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:17" (2/3) ... [2022-01-10 00:30:20,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a46adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:30:20, skipping insertion in model container [2022-01-10 00:30:20,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:30:20" (3/3) ... [2022-01-10 00:30:20,603 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label40.c [2022-01-10 00:30:20,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:30:20,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:30:20,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:30:20,664 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 00:30:20,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:30:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 00:30:20,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:20,703 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] [2022-01-10 00:30:20,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash 626000386, now seen corresponding path program 1 times [2022-01-10 00:30:20,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:20,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555195236] [2022-01-10 00:30:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:20,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:30:20,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:20,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555195236] [2022-01-10 00:30:20,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555195236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:20,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:20,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:30:20,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468660500] [2022-01-10 00:30:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:20,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:20,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:20,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:20,952 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:23,783 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2022-01-10 00:30:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 00:30:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:23,804 INFO L225 Difference]: With dead ends: 2205 [2022-01-10 00:30:23,804 INFO L226 Difference]: Without dead ends: 1384 [2022-01-10 00:30:23,810 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 00:30:23,812 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 675 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:23,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 430 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:30:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-01-10 00:30:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-01-10 00:30:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.6514822848879247) internal successors, (2284), 1383 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2284 transitions. [2022-01-10 00:30:23,910 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2284 transitions. Word has length 44 [2022-01-10 00:30:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:23,910 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2284 transitions. [2022-01-10 00:30:23,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2284 transitions. [2022-01-10 00:30:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 00:30:23,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:23,914 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, 1, 1, 1, 1, 1, 1, 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 00:30:23,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:30:23,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:23,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1373407797, now seen corresponding path program 1 times [2022-01-10 00:30:23,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:23,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879860848] [2022-01-10 00:30:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:23,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:30:24,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:24,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879860848] [2022-01-10 00:30:24,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879860848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:24,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:24,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:30:24,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162686395] [2022-01-10 00:30:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:24,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:24,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:24,016 INFO L87 Difference]: Start difference. First operand 1384 states and 2284 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:26,494 INFO L93 Difference]: Finished difference Result 4146 states and 6847 transitions. [2022-01-10 00:30:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 00:30:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:26,506 INFO L225 Difference]: With dead ends: 4146 [2022-01-10 00:30:26,506 INFO L226 Difference]: Without dead ends: 2764 [2022-01-10 00:30:26,513 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 00:30:26,515 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 712 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:26,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 531 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:30:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-01-10 00:30:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-01-10 00:30:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.404632645674991) internal successors, (3881), 2763 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3881 transitions. [2022-01-10 00:30:26,572 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3881 transitions. Word has length 110 [2022-01-10 00:30:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:26,575 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3881 transitions. [2022-01-10 00:30:26,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3881 transitions. [2022-01-10 00:30:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 00:30:26,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:26,584 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, 1, 1, 1, 1, 1, 1, 1, 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 00:30:26,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:30:26,584 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash 614325229, now seen corresponding path program 1 times [2022-01-10 00:30:26,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:26,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674311185] [2022-01-10 00:30:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:26,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:30:26,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:26,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674311185] [2022-01-10 00:30:26,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674311185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:26,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:26,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:30:26,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217825202] [2022-01-10 00:30:26,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:26,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:26,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:26,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:26,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:26,681 INFO L87 Difference]: Start difference. First operand 2764 states and 3881 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:28,890 INFO L93 Difference]: Finished difference Result 8288 states and 11639 transitions. [2022-01-10 00:30:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:28,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 00:30:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:28,914 INFO L225 Difference]: With dead ends: 8288 [2022-01-10 00:30:28,914 INFO L226 Difference]: Without dead ends: 5526 [2022-01-10 00:30:28,918 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 00:30:28,924 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 709 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:28,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 434 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:30:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2022-01-10 00:30:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5524. [2022-01-10 00:30:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.2657975737823646) internal successors, (6991), 5523 states have internal predecessors, (6991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 6991 transitions. [2022-01-10 00:30:29,025 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 6991 transitions. Word has length 111 [2022-01-10 00:30:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:29,026 INFO L470 AbstractCegarLoop]: Abstraction has 5524 states and 6991 transitions. [2022-01-10 00:30:29,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 6991 transitions. [2022-01-10 00:30:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 00:30:29,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:29,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:29,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:30:29,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash 726837676, now seen corresponding path program 1 times [2022-01-10 00:30:29,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:29,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965496107] [2022-01-10 00:30:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:29,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:30:29,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:29,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965496107] [2022-01-10 00:30:29,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965496107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:29,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:29,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:30:29,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976907409] [2022-01-10 00:30:29,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:29,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:30:29,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:29,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:30:29,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:30:29,164 INFO L87 Difference]: Start difference. First operand 5524 states and 6991 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:32,283 INFO L93 Difference]: Finished difference Result 13808 states and 17091 transitions. [2022-01-10 00:30:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:30:32,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-01-10 00:30:32,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:32,311 INFO L225 Difference]: With dead ends: 13808 [2022-01-10 00:30:32,311 INFO L226 Difference]: Without dead ends: 8286 [2022-01-10 00:30:32,319 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 00:30:32,325 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1924 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4350 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 4350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:32,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1924 Valid, 643 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 4350 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 00:30:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2022-01-10 00:30:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 8284. [2022-01-10 00:30:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8284 states, 8283 states have (on average 1.202100688156465) internal successors, (9957), 8283 states have internal predecessors, (9957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 9957 transitions. [2022-01-10 00:30:32,472 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 9957 transitions. Word has length 137 [2022-01-10 00:30:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:32,473 INFO L470 AbstractCegarLoop]: Abstraction has 8284 states and 9957 transitions. [2022-01-10 00:30:32,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 9957 transitions. [2022-01-10 00:30:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-10 00:30:32,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:32,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:32,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:30:32,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:32,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash -406301207, now seen corresponding path program 1 times [2022-01-10 00:30:32,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:32,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837687246] [2022-01-10 00:30:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:32,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:30:32,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:32,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837687246] [2022-01-10 00:30:32,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837687246] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:30:32,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884576279] [2022-01-10 00:30:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:32,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:30:32,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:30:32,695 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 00:30:32,703 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 00:30:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:32,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:30:32,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:30:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:30:33,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:30:33,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884576279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:33,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:30:33,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:30:33,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477205110] [2022-01-10 00:30:33,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:33,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:33,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:33,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:30:33,235 INFO L87 Difference]: Start difference. First operand 8284 states and 9957 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:35,516 INFO L93 Difference]: Finished difference Result 22086 states and 26900 transitions. [2022-01-10 00:30:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:35,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2022-01-10 00:30:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:35,558 INFO L225 Difference]: With dead ends: 22086 [2022-01-10 00:30:35,559 INFO L226 Difference]: Without dead ends: 13804 [2022-01-10 00:30:35,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:30:35,572 INFO L933 BasicCegarLoop]: 1316 mSDtfsCounter, 649 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:35,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1323 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [753 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:30:35,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13804 states. [2022-01-10 00:30:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13804 to 12424. [2022-01-10 00:30:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.1787007969089591) internal successors, (14643), 12423 states have internal predecessors, (14643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 14643 transitions. [2022-01-10 00:30:35,858 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 14643 transitions. Word has length 226 [2022-01-10 00:30:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:35,860 INFO L470 AbstractCegarLoop]: Abstraction has 12424 states and 14643 transitions. [2022-01-10 00:30:35,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 14643 transitions. [2022-01-10 00:30:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-01-10 00:30:35,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:35,874 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:30:35,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:30:36,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:30:36,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash -633537744, now seen corresponding path program 1 times [2022-01-10 00:30:36,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:36,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544582061] [2022-01-10 00:30:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:36,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:30:36,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:36,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544582061] [2022-01-10 00:30:36,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544582061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:36,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:36,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:30:36,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192668370] [2022-01-10 00:30:36,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:36,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:30:36,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:36,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:30:36,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:30:36,312 INFO L87 Difference]: Start difference. First operand 12424 states and 14643 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:38,520 INFO L93 Difference]: Finished difference Result 27661 states and 32159 transitions. [2022-01-10 00:30:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:30:38,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 344 [2022-01-10 00:30:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:38,548 INFO L225 Difference]: With dead ends: 27661 [2022-01-10 00:30:38,548 INFO L226 Difference]: Without dead ends: 15186 [2022-01-10 00:30:38,564 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 00:30:38,566 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 517 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:38,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 642 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3039 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:30:38,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15186 states. [2022-01-10 00:30:38,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15186 to 15184. [2022-01-10 00:30:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15184 states, 15183 states have (on average 1.1130211420667853) internal successors, (16899), 15183 states have internal predecessors, (16899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15184 states to 15184 states and 16899 transitions. [2022-01-10 00:30:38,887 INFO L78 Accepts]: Start accepts. Automaton has 15184 states and 16899 transitions. Word has length 344 [2022-01-10 00:30:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:38,888 INFO L470 AbstractCegarLoop]: Abstraction has 15184 states and 16899 transitions. [2022-01-10 00:30:38,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 15184 states and 16899 transitions. [2022-01-10 00:30:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-01-10 00:30:38,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:38,899 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:30:38,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:30:38,900 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:38,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:38,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1365783687, now seen corresponding path program 1 times [2022-01-10 00:30:38,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:38,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021222863] [2022-01-10 00:30:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:38,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-01-10 00:30:39,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:39,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021222863] [2022-01-10 00:30:39,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021222863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:39,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:39,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:30:39,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105092282] [2022-01-10 00:30:39,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:39,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:39,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:39,120 INFO L87 Difference]: Start difference. First operand 15184 states and 16899 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:40,945 INFO L93 Difference]: Finished difference Result 35196 states and 39112 transitions. [2022-01-10 00:30:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:40,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 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 410 [2022-01-10 00:30:40,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:40,976 INFO L225 Difference]: With dead ends: 35196 [2022-01-10 00:30:40,977 INFO L226 Difference]: Without dead ends: 20014 [2022-01-10 00:30:40,986 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 00:30:40,987 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 466 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:40,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 77 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:30:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20014 states. [2022-01-10 00:30:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20014 to 20014. [2022-01-10 00:30:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20014 states, 20013 states have (on average 1.0934892319992005) internal successors, (21884), 20013 states have internal predecessors, (21884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20014 states to 20014 states and 21884 transitions. [2022-01-10 00:30:41,209 INFO L78 Accepts]: Start accepts. Automaton has 20014 states and 21884 transitions. Word has length 410 [2022-01-10 00:30:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:41,210 INFO L470 AbstractCegarLoop]: Abstraction has 20014 states and 21884 transitions. [2022-01-10 00:30:41,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 20014 states and 21884 transitions. [2022-01-10 00:30:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-01-10 00:30:41,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:41,217 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:30:41,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:30:41,217 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1686882385, now seen corresponding path program 1 times [2022-01-10 00:30:41,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:41,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771763843] [2022-01-10 00:30:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:41,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:30:41,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:41,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771763843] [2022-01-10 00:30:41,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771763843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:41,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:41,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:30:41,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300995359] [2022-01-10 00:30:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:41,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:41,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:41,396 INFO L87 Difference]: Start difference. First operand 20014 states and 21884 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:43,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:43,310 INFO L93 Difference]: Finished difference Result 49686 states and 54768 transitions. [2022-01-10 00:30:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:43,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 461 [2022-01-10 00:30:43,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:43,356 INFO L225 Difference]: With dead ends: 49686 [2022-01-10 00:30:43,356 INFO L226 Difference]: Without dead ends: 29674 [2022-01-10 00:30:43,378 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 00:30:43,378 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 575 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:43,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 979 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:30:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29674 states. [2022-01-10 00:30:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29674 to 28294. [2022-01-10 00:30:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28294 states, 28293 states have (on average 1.0842964690912946) internal successors, (30678), 28293 states have internal predecessors, (30678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28294 states to 28294 states and 30678 transitions. [2022-01-10 00:30:43,832 INFO L78 Accepts]: Start accepts. Automaton has 28294 states and 30678 transitions. Word has length 461 [2022-01-10 00:30:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:43,833 INFO L470 AbstractCegarLoop]: Abstraction has 28294 states and 30678 transitions. [2022-01-10 00:30:43,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 28294 states and 30678 transitions. [2022-01-10 00:30:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2022-01-10 00:30:43,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:43,838 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:43,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:30:43,838 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:43,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1418324688, now seen corresponding path program 1 times [2022-01-10 00:30:43,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:43,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763264621] [2022-01-10 00:30:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:43,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-01-10 00:30:44,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:44,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763264621] [2022-01-10 00:30:44,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763264621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:44,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:44,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:30:44,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121813876] [2022-01-10 00:30:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:44,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:44,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:44,041 INFO L87 Difference]: Start difference. First operand 28294 states and 30678 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:45,950 INFO L93 Difference]: Finished difference Result 56586 states and 61354 transitions. [2022-01-10 00:30:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:45,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 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 496 [2022-01-10 00:30:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:45,997 INFO L225 Difference]: With dead ends: 56586 [2022-01-10 00:30:45,997 INFO L226 Difference]: Without dead ends: 28294 [2022-01-10 00:30:46,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:46,006 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 753 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:46,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 780 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:30:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28294 states. [2022-01-10 00:30:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28294 to 28294. [2022-01-10 00:30:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28294 states, 28293 states have (on average 1.0700526632029124) internal successors, (30275), 28293 states have internal predecessors, (30275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28294 states to 28294 states and 30275 transitions. [2022-01-10 00:30:46,289 INFO L78 Accepts]: Start accepts. Automaton has 28294 states and 30275 transitions. Word has length 496 [2022-01-10 00:30:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:46,290 INFO L470 AbstractCegarLoop]: Abstraction has 28294 states and 30275 transitions. [2022-01-10 00:30:46,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 28294 states and 30275 transitions. [2022-01-10 00:30:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-01-10 00:30:46,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:46,297 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, 4, 4, 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, 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] [2022-01-10 00:30:46,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:30:46,297 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:46,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1108411997, now seen corresponding path program 1 times [2022-01-10 00:30:46,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:46,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796748683] [2022-01-10 00:30:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:46,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-01-10 00:30:46,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:46,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796748683] [2022-01-10 00:30:46,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796748683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:46,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:46,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:30:46,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531503031] [2022-01-10 00:30:46,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:46,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:46,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:46,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:30:46,457 INFO L87 Difference]: Start difference. First operand 28294 states and 30275 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:48,321 INFO L93 Difference]: Finished difference Result 62796 states and 67785 transitions. [2022-01-10 00:30:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:48,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 586 [2022-01-10 00:30:48,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:48,356 INFO L225 Difference]: With dead ends: 62796 [2022-01-10 00:30:48,356 INFO L226 Difference]: Without dead ends: 31744 [2022-01-10 00:30:48,377 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 00:30:48,377 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 609 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:48,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1097 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:30:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31744 states. [2022-01-10 00:30:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31744 to 31744. [2022-01-10 00:30:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31744 states, 31743 states have (on average 1.0696531518760042) internal successors, (33954), 31743 states have internal predecessors, (33954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31744 states to 31744 states and 33954 transitions. [2022-01-10 00:30:48,774 INFO L78 Accepts]: Start accepts. Automaton has 31744 states and 33954 transitions. Word has length 586 [2022-01-10 00:30:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:48,775 INFO L470 AbstractCegarLoop]: Abstraction has 31744 states and 33954 transitions. [2022-01-10 00:30:48,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 31744 states and 33954 transitions. [2022-01-10 00:30:48,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-01-10 00:30:48,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:48,784 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:30:48,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:30:48,785 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1794785161, now seen corresponding path program 1 times [2022-01-10 00:30:48,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:48,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133376071] [2022-01-10 00:30:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:48,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-01-10 00:30:48,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:48,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133376071] [2022-01-10 00:30:48,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133376071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:48,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:48,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 00:30:48,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955392069] [2022-01-10 00:30:48,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:49,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:30:49,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:30:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:30:49,001 INFO L87 Difference]: Start difference. First operand 31744 states and 33954 transitions. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:51,728 INFO L93 Difference]: Finished difference Result 70543 states and 75976 transitions. [2022-01-10 00:30:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:30:51,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 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 622 [2022-01-10 00:30:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:51,766 INFO L225 Difference]: With dead ends: 70543 [2022-01-10 00:30:51,766 INFO L226 Difference]: Without dead ends: 34661 [2022-01-10 00:30:51,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:30:51,793 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 724 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:51,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 1080 Invalid, 4041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [724 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:30:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34661 states. [2022-01-10 00:30:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34661 to 31744. [2022-01-10 00:30:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31744 states, 31743 states have (on average 1.0438521878839429) internal successors, (33135), 31743 states have internal predecessors, (33135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31744 states to 31744 states and 33135 transitions. [2022-01-10 00:30:52,265 INFO L78 Accepts]: Start accepts. Automaton has 31744 states and 33135 transitions. Word has length 622 [2022-01-10 00:30:52,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:52,266 INFO L470 AbstractCegarLoop]: Abstraction has 31744 states and 33135 transitions. [2022-01-10 00:30:52,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 31744 states and 33135 transitions. [2022-01-10 00:30:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2022-01-10 00:30:52,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:52,281 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:30:52,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:30:52,281 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:52,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1557974034, now seen corresponding path program 1 times [2022-01-10 00:30:52,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:52,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044839655] [2022-01-10 00:30:52,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:52,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-01-10 00:30:52,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:52,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044839655] [2022-01-10 00:30:52,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044839655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:52,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:30:52,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:30:52,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199045389] [2022-01-10 00:30:52,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:52,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:30:52,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:52,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:30:52,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:30:52,498 INFO L87 Difference]: Start difference. First operand 31744 states and 33135 transitions. Second operand has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:54,908 INFO L93 Difference]: Finished difference Result 71076 states and 74439 transitions. [2022-01-10 00:30:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:30:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 733 [2022-01-10 00:30:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:54,944 INFO L225 Difference]: With dead ends: 71076 [2022-01-10 00:30:54,945 INFO L226 Difference]: Without dead ends: 39334 [2022-01-10 00:30:54,957 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 00:30:54,957 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 996 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:54,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 94 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:30:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39334 states. [2022-01-10 00:30:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39334 to 38644. [2022-01-10 00:30:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38644 states, 38643 states have (on average 1.0419739668245218) internal successors, (40265), 38643 states have internal predecessors, (40265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38644 states to 38644 states and 40265 transitions. [2022-01-10 00:30:55,273 INFO L78 Accepts]: Start accepts. Automaton has 38644 states and 40265 transitions. Word has length 733 [2022-01-10 00:30:55,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:30:55,274 INFO L470 AbstractCegarLoop]: Abstraction has 38644 states and 40265 transitions. [2022-01-10 00:30:55,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 38644 states and 40265 transitions. [2022-01-10 00:30:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1277 [2022-01-10 00:30:55,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:30:55,449 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:30:55,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:30:55,449 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:30:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:30:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2026446447, now seen corresponding path program 1 times [2022-01-10 00:30:55,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:30:55,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189497601] [2022-01-10 00:30:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:55,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:30:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1594 backedges. 570 proven. 938 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 00:30:56,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:30:56,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189497601] [2022-01-10 00:30:56,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189497601] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:30:56,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254165574] [2022-01-10 00:30:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:30:56,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:30:56,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:30:56,029 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 00:30:56,067 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 00:30:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:30:56,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:30:56,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:30:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1594 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2022-01-10 00:30:58,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:30:58,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254165574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:30:58,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:30:58,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 00:30:58,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033924699] [2022-01-10 00:30:58,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:30:58,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:30:58,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:30:58,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:30:58,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:30:58,137 INFO L87 Difference]: Start difference. First operand 38644 states and 40265 transitions. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:30:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:30:59,747 INFO L93 Difference]: Finished difference Result 77976 states and 81228 transitions. [2022-01-10 00:30:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:30:59,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 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 1276 [2022-01-10 00:30:59,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:30:59,786 INFO L225 Difference]: With dead ends: 77976 [2022-01-10 00:30:59,786 INFO L226 Difference]: Without dead ends: 38644 [2022-01-10 00:30:59,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1276 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 00:30:59,811 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 642 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:30:59,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 805 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:30:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38644 states. [2022-01-10 00:31:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38644 to 37954. [2022-01-10 00:31:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37954 states, 37953 states have (on average 1.0390482965773458) internal successors, (39435), 37953 states have internal predecessors, (39435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37954 states to 37954 states and 39435 transitions. [2022-01-10 00:31:00,264 INFO L78 Accepts]: Start accepts. Automaton has 37954 states and 39435 transitions. Word has length 1276 [2022-01-10 00:31:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:00,265 INFO L470 AbstractCegarLoop]: Abstraction has 37954 states and 39435 transitions. [2022-01-10 00:31:00,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 37954 states and 39435 transitions. [2022-01-10 00:31:00,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1328 [2022-01-10 00:31:00,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:00,287 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:00,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:31:00,497 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,SelfDestructingSolverStorable12 [2022-01-10 00:31:00,498 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:00,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1068314314, now seen corresponding path program 1 times [2022-01-10 00:31:00,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:00,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644234435] [2022-01-10 00:31:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:00,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 816 proven. 1039 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-01-10 00:31:01,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:01,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644234435] [2022-01-10 00:31:01,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644234435] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:31:01,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135180215] [2022-01-10 00:31:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:01,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:31:01,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:31:01,082 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 00:31:01,123 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 00:31:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:01,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:31:01,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:31:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1151 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2022-01-10 00:31:03,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:31:03,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135180215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:03,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:31:03,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 00:31:03,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513299721] [2022-01-10 00:31:03,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:03,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:03,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:31:03,085 INFO L87 Difference]: Start difference. First operand 37954 states and 39435 transitions. Second operand has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:04,698 INFO L93 Difference]: Finished difference Result 88326 states and 92176 transitions. [2022-01-10 00:31:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:04,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 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 1327 [2022-01-10 00:31:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:04,757 INFO L225 Difference]: With dead ends: 88326 [2022-01-10 00:31:04,757 INFO L226 Difference]: Without dead ends: 51064 [2022-01-10 00:31:04,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1327 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:31:04,783 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 553 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:04,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 145 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:31:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51064 states. [2022-01-10 00:31:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51064 to 50374. [2022-01-10 00:31:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50374 states, 50373 states have (on average 1.0370039505290534) internal successors, (52237), 50373 states have internal predecessors, (52237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50374 states to 50374 states and 52237 transitions. [2022-01-10 00:31:05,197 INFO L78 Accepts]: Start accepts. Automaton has 50374 states and 52237 transitions. Word has length 1327 [2022-01-10 00:31:05,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:05,198 INFO L470 AbstractCegarLoop]: Abstraction has 50374 states and 52237 transitions. [2022-01-10 00:31:05,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:05,198 INFO L276 IsEmpty]: Start isEmpty. Operand 50374 states and 52237 transitions. [2022-01-10 00:31:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2022-01-10 00:31:05,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:05,473 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:05,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 00:31:05,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:31:05,674 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:05,675 INFO L85 PathProgramCache]: Analyzing trace with hash 323969139, now seen corresponding path program 1 times [2022-01-10 00:31:05,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:05,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512885702] [2022-01-10 00:31:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:05,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2783 backedges. 1606 proven. 0 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2022-01-10 00:31:06,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:06,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512885702] [2022-01-10 00:31:06,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512885702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:06,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:06,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:06,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95433586] [2022-01-10 00:31:06,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:06,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:06,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:06,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:06,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:06,295 INFO L87 Difference]: Start difference. First operand 50374 states and 52237 transitions. Second operand has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:07,853 INFO L93 Difference]: Finished difference Result 100056 states and 103781 transitions. [2022-01-10 00:31:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:07,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1368 [2022-01-10 00:31:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:07,906 INFO L225 Difference]: With dead ends: 100056 [2022-01-10 00:31:07,907 INFO L226 Difference]: Without dead ends: 50374 [2022-01-10 00:31:07,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:07,932 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 659 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:07,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 758 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:31:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50374 states. [2022-01-10 00:31:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50374 to 50374. [2022-01-10 00:31:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50374 states, 50373 states have (on average 1.035415798145832) internal successors, (52157), 50373 states have internal predecessors, (52157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50374 states to 50374 states and 52157 transitions. [2022-01-10 00:31:08,626 INFO L78 Accepts]: Start accepts. Automaton has 50374 states and 52157 transitions. Word has length 1368 [2022-01-10 00:31:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:08,627 INFO L470 AbstractCegarLoop]: Abstraction has 50374 states and 52157 transitions. [2022-01-10 00:31:08,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 50374 states and 52157 transitions. [2022-01-10 00:31:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1380 [2022-01-10 00:31:08,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:08,662 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:08,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:31:08,662 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1070275784, now seen corresponding path program 1 times [2022-01-10 00:31:08,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:08,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274774725] [2022-01-10 00:31:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:08,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2416 backedges. 780 proven. 0 refuted. 0 times theorem prover too weak. 1636 trivial. 0 not checked. [2022-01-10 00:31:09,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274774725] [2022-01-10 00:31:09,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274774725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:09,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:09,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:09,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9790233] [2022-01-10 00:31:09,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:09,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:09,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:09,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:09,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:09,238 INFO L87 Difference]: Start difference. First operand 50374 states and 52157 transitions. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)