/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 04:24:15,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 04:24:15,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 04:24:15,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 04:24:15,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 04:24:15,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 04:24:15,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 04:24:15,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 04:24:15,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 04:24:15,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 04:24:15,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 04:24:15,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 04:24:15,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 04:24:15,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 04:24:15,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 04:24:15,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 04:24:15,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 04:24:15,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 04:24:15,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 04:24:15,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 04:24:15,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-15 04:24:15,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 04:24:15,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 04:24:15,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 04:24:15,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 04:24:15,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 04:24:15,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 04:24:15,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 04:24:15,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 04:24:15,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 04:24:15,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 04:24:15,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 04:24:15,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 04:24:15,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 04:24:15,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 04:24:15,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 04:24:15,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:24:15,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 04:24:15,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 04:24:15,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 04:24:15,597 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-15 04:24:15,597 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 04:24:15,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 04:24:15,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 04:24:15,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 04:24:15,794 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 04:24:15,807 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 04:24:15,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2022-02-15 04:24:15,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983d677cc/bc3b68ad10ec46d1a3e4ebbf2c4fc528/FLAGf5a30dfe7 [2022-02-15 04:24:16,209 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 04:24:16,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c [2022-02-15 04:24:16,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983d677cc/bc3b68ad10ec46d1a3e4ebbf2c4fc528/FLAGf5a30dfe7 [2022-02-15 04:24:16,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983d677cc/bc3b68ad10ec46d1a3e4ebbf2c4fc528 [2022-02-15 04:24:16,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 04:24:16,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 04:24:16,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 04:24:16,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 04:24:16,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 04:24:16,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6902b147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16, skipping insertion in model container [2022-02-15 04:24:16,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 04:24:16,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 04:24:16,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c[3901,3914] [2022-02-15 04:24:16,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:24:16,410 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 04:24:16,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c[3901,3914] [2022-02-15 04:24:16,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:24:16,452 INFO L208 MainTranslator]: Completed translation [2022-02-15 04:24:16,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16 WrapperNode [2022-02-15 04:24:16,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 04:24:16,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 04:24:16,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 04:24:16,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 04:24:16,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 04:24:16,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 04:24:16,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 04:24:16,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 04:24:16,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (1/1) ... [2022-02-15 04:24:16,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:24:16,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 04:24:16,524 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) [2022-02-15 04:24:16,544 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 [2022-02-15 04:24:16,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 04:24:16,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 04:24:16,559 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 04:24:16,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 04:24:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 04:24:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 04:24:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 04:24:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 04:24:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 04:24:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 04:24:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 04:24:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 04:24:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 04:24:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 04:24:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 04:24:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 04:24:16,623 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 04:24:16,625 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 04:24:16,794 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 04:24:16,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 04:24:16,798 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 04:24:16,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:24:16 BoogieIcfgContainer [2022-02-15 04:24:16,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 04:24:16,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 04:24:16,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 04:24:16,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 04:24:16,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 04:24:16" (1/3) ... [2022-02-15 04:24:16,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2d45b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:24:16, skipping insertion in model container [2022-02-15 04:24:16,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:24:16" (2/3) ... [2022-02-15 04:24:16,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2d45b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:24:16, skipping insertion in model container [2022-02-15 04:24:16,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:24:16" (3/3) ... [2022-02-15 04:24:16,805 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2022-02-15 04:24:16,808 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 04:24:16,808 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 04:24:16,842 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 04:24:16,854 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=QVASR [2022-02-15 04:24:16,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 04:24:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 40 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 04:24:16,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 04:24:16,890 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:16,890 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] [2022-02-15 04:24:16,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:16,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1465526181, now seen corresponding path program 1 times [2022-02-15 04:24:16,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:16,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683001147] [2022-02-15 04:24:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:16,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:16,953 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:17,127 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:17,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683001147] [2022-02-15 04:24:17,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [683001147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:17,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:17,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:17,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127273561] [2022-02-15 04:24:17,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:17,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:17,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:17,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:17,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:17,153 INFO L87 Difference]: Start difference. First operand has 45 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 40 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:17,315 INFO L93 Difference]: Finished difference Result 88 states and 151 transitions. [2022-02-15 04:24:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-15 04:24:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:17,324 INFO L225 Difference]: With dead ends: 88 [2022-02-15 04:24:17,324 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 04:24:17,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:17,328 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 174 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:17,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 89 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 04:24:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2022-02-15 04:24:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.851063829787234) internal successors, (87), 47 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 90 transitions. [2022-02-15 04:24:17,377 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 90 transitions. Word has length 21 [2022-02-15 04:24:17,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:17,377 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 90 transitions. [2022-02-15 04:24:17,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 90 transitions. [2022-02-15 04:24:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 04:24:17,378 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:17,379 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] [2022-02-15 04:24:17,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 04:24:17,379 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2052332195, now seen corresponding path program 1 times [2022-02-15 04:24:17,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:17,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417704179] [2022-02-15 04:24:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:17,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:17,386 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:17,440 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:17,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417704179] [2022-02-15 04:24:17,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [417704179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:17,440 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:17,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:17,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401775642] [2022-02-15 04:24:17,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:17,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:17,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:17,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:17,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:17,442 INFO L87 Difference]: Start difference. First operand 51 states and 90 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:17,547 INFO L93 Difference]: Finished difference Result 118 states and 213 transitions. [2022-02-15 04:24:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:17,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-15 04:24:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:17,548 INFO L225 Difference]: With dead ends: 118 [2022-02-15 04:24:17,549 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 04:24:17,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:17,550 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 148 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:17,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 95 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 04:24:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-02-15 04:24:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.835820895522388) internal successors, (123), 67 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 126 transitions. [2022-02-15 04:24:17,565 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 126 transitions. Word has length 21 [2022-02-15 04:24:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:17,565 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 126 transitions. [2022-02-15 04:24:17,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 126 transitions. [2022-02-15 04:24:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 04:24:17,566 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:17,566 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] [2022-02-15 04:24:17,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 04:24:17,567 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1813542028, now seen corresponding path program 1 times [2022-02-15 04:24:17,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:17,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255260883] [2022-02-15 04:24:17,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:17,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:17,572 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:17,648 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:17,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255260883] [2022-02-15 04:24:17,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1255260883] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:17,649 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:17,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:17,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610703432] [2022-02-15 04:24:17,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:17,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:17,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:17,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:17,650 INFO L87 Difference]: Start difference. First operand 71 states and 126 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:17,738 INFO L93 Difference]: Finished difference Result 109 states and 190 transitions. [2022-02-15 04:24:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:17,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-15 04:24:17,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:17,742 INFO L225 Difference]: With dead ends: 109 [2022-02-15 04:24:17,742 INFO L226 Difference]: Without dead ends: 76 [2022-02-15 04:24:17,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:17,747 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 131 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:17,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 113 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-15 04:24:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-02-15 04:24:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.7857142857142858) internal successors, (125), 70 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 128 transitions. [2022-02-15 04:24:17,758 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 128 transitions. Word has length 22 [2022-02-15 04:24:17,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:17,758 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 128 transitions. [2022-02-15 04:24:17,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 128 transitions. [2022-02-15 04:24:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 04:24:17,759 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:17,759 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] [2022-02-15 04:24:17,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 04:24:17,759 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:17,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:17,759 INFO L85 PathProgramCache]: Analyzing trace with hash 802424778, now seen corresponding path program 1 times [2022-02-15 04:24:17,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:17,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007217270] [2022-02-15 04:24:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:17,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:17,761 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:17,815 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:17,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007217270] [2022-02-15 04:24:17,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1007217270] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:17,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:17,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:17,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647718990] [2022-02-15 04:24:17,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:17,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:17,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:17,817 INFO L87 Difference]: Start difference. First operand 74 states and 128 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:17,899 INFO L93 Difference]: Finished difference Result 202 states and 360 transitions. [2022-02-15 04:24:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:17,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-15 04:24:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:17,901 INFO L225 Difference]: With dead ends: 202 [2022-02-15 04:24:17,901 INFO L226 Difference]: Without dead ends: 137 [2022-02-15 04:24:17,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:17,906 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 163 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:17,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 79 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-15 04:24:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2022-02-15 04:24:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 131 states have (on average 1.786259541984733) internal successors, (234), 131 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 237 transitions. [2022-02-15 04:24:17,927 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 237 transitions. Word has length 22 [2022-02-15 04:24:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:17,927 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 237 transitions. [2022-02-15 04:24:17,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 237 transitions. [2022-02-15 04:24:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 04:24:17,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:17,928 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] [2022-02-15 04:24:17,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 04:24:17,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:17,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1389230792, now seen corresponding path program 1 times [2022-02-15 04:24:17,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:17,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235137423] [2022-02-15 04:24:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:17,930 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:17,955 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:17,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235137423] [2022-02-15 04:24:17,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1235137423] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:17,955 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:17,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:17,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876314306] [2022-02-15 04:24:17,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:17,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:17,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:17,956 INFO L87 Difference]: Start difference. First operand 135 states and 237 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:18,034 INFO L93 Difference]: Finished difference Result 175 states and 307 transitions. [2022-02-15 04:24:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:18,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-15 04:24:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:18,035 INFO L225 Difference]: With dead ends: 175 [2022-02-15 04:24:18,035 INFO L226 Difference]: Without dead ends: 173 [2022-02-15 04:24:18,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:18,038 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 106 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:18,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 128 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-02-15 04:24:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 135. [2022-02-15 04:24:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 131 states have (on average 1.7709923664122138) internal successors, (232), 131 states have internal predecessors, (232), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 235 transitions. [2022-02-15 04:24:18,066 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 235 transitions. Word has length 22 [2022-02-15 04:24:18,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:18,067 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 235 transitions. [2022-02-15 04:24:18,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 235 transitions. [2022-02-15 04:24:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 04:24:18,073 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:18,075 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] [2022-02-15 04:24:18,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 04:24:18,076 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash -894421934, now seen corresponding path program 1 times [2022-02-15 04:24:18,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:18,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558829632] [2022-02-15 04:24:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:18,078 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:18,116 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:18,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558829632] [2022-02-15 04:24:18,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [558829632] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:18,116 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:18,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:18,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347591093] [2022-02-15 04:24:18,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:18,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:18,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:18,117 INFO L87 Difference]: Start difference. First operand 135 states and 235 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:18,209 INFO L93 Difference]: Finished difference Result 251 states and 443 transitions. [2022-02-15 04:24:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-15 04:24:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:18,211 INFO L225 Difference]: With dead ends: 251 [2022-02-15 04:24:18,211 INFO L226 Difference]: Without dead ends: 249 [2022-02-15 04:24:18,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:18,212 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 154 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:18,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 76 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-15 04:24:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 183. [2022-02-15 04:24:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.7541899441340782) internal successors, (314), 179 states have internal predecessors, (314), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 317 transitions. [2022-02-15 04:24:18,228 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 317 transitions. Word has length 23 [2022-02-15 04:24:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:18,229 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 317 transitions. [2022-02-15 04:24:18,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 317 transitions. [2022-02-15 04:24:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 04:24:18,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:18,230 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] [2022-02-15 04:24:18,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 04:24:18,230 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1481227948, now seen corresponding path program 1 times [2022-02-15 04:24:18,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:18,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956166531] [2022-02-15 04:24:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:18,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:18,232 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:18,279 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:18,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956166531] [2022-02-15 04:24:18,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1956166531] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:18,279 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:18,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:18,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080264389] [2022-02-15 04:24:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:18,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:18,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:18,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:18,281 INFO L87 Difference]: Start difference. First operand 183 states and 317 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:18,345 INFO L93 Difference]: Finished difference Result 431 states and 755 transitions. [2022-02-15 04:24:18,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:18,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-15 04:24:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:18,348 INFO L225 Difference]: With dead ends: 431 [2022-02-15 04:24:18,348 INFO L226 Difference]: Without dead ends: 257 [2022-02-15 04:24:18,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:18,351 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 136 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:18,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 99 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-02-15 04:24:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2022-02-15 04:24:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.7370517928286853) internal successors, (436), 251 states have internal predecessors, (436), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 439 transitions. [2022-02-15 04:24:18,368 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 439 transitions. Word has length 23 [2022-02-15 04:24:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:18,368 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 439 transitions. [2022-02-15 04:24:18,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 439 transitions. [2022-02-15 04:24:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 04:24:18,369 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:18,369 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] [2022-02-15 04:24:18,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 04:24:18,370 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1957062113, now seen corresponding path program 1 times [2022-02-15 04:24:18,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:18,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011459108] [2022-02-15 04:24:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:18,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:18,375 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:18,412 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:18,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011459108] [2022-02-15 04:24:18,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1011459108] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:18,412 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:18,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:18,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433042558] [2022-02-15 04:24:18,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:18,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:18,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:18,413 INFO L87 Difference]: Start difference. First operand 255 states and 439 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:18,477 INFO L93 Difference]: Finished difference Result 385 states and 661 transitions. [2022-02-15 04:24:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:18,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-02-15 04:24:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:18,481 INFO L225 Difference]: With dead ends: 385 [2022-02-15 04:24:18,481 INFO L226 Difference]: Without dead ends: 263 [2022-02-15 04:24:18,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:18,483 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:18,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 107 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-02-15 04:24:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2022-02-15 04:24:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 257 states have (on average 1.7120622568093384) internal successors, (440), 257 states have internal predecessors, (440), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 443 transitions. [2022-02-15 04:24:18,497 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 443 transitions. Word has length 24 [2022-02-15 04:24:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:18,498 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 443 transitions. [2022-02-15 04:24:18,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 443 transitions. [2022-02-15 04:24:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 04:24:18,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:18,500 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] [2022-02-15 04:24:18,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 04:24:18,500 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1326787933, now seen corresponding path program 1 times [2022-02-15 04:24:18,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:18,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584178434] [2022-02-15 04:24:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:18,502 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:18,543 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:18,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584178434] [2022-02-15 04:24:18,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [584178434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:18,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:18,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:18,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786672347] [2022-02-15 04:24:18,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:18,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:18,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:18,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:18,544 INFO L87 Difference]: Start difference. First operand 261 states and 443 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:18,621 INFO L93 Difference]: Finished difference Result 477 states and 821 transitions. [2022-02-15 04:24:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:18,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-02-15 04:24:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:18,625 INFO L225 Difference]: With dead ends: 477 [2022-02-15 04:24:18,625 INFO L226 Difference]: Without dead ends: 475 [2022-02-15 04:24:18,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:18,626 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 147 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:18,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 75 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-02-15 04:24:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 361. [2022-02-15 04:24:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 357 states have (on average 1.680672268907563) internal successors, (600), 357 states have internal predecessors, (600), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 603 transitions. [2022-02-15 04:24:18,647 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 603 transitions. Word has length 24 [2022-02-15 04:24:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:18,647 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 603 transitions. [2022-02-15 04:24:18,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 603 transitions. [2022-02-15 04:24:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 04:24:18,648 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:18,648 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] [2022-02-15 04:24:18,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 04:24:18,648 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:18,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 739981919, now seen corresponding path program 1 times [2022-02-15 04:24:18,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:18,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273473342] [2022-02-15 04:24:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:18,650 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:18,683 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:18,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273473342] [2022-02-15 04:24:18,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1273473342] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:18,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:18,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:18,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637627312] [2022-02-15 04:24:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:18,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:18,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:18,684 INFO L87 Difference]: Start difference. First operand 361 states and 603 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:18,768 INFO L93 Difference]: Finished difference Result 845 states and 1421 transitions. [2022-02-15 04:24:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:18,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-02-15 04:24:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:18,771 INFO L225 Difference]: With dead ends: 845 [2022-02-15 04:24:18,771 INFO L226 Difference]: Without dead ends: 499 [2022-02-15 04:24:18,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:18,772 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 130 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:18,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 101 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-02-15 04:24:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2022-02-15 04:24:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 493 states have (on average 1.6632860040567952) internal successors, (820), 493 states have internal predecessors, (820), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 823 transitions. [2022-02-15 04:24:18,801 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 823 transitions. Word has length 24 [2022-02-15 04:24:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:18,801 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 823 transitions. [2022-02-15 04:24:18,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 823 transitions. [2022-02-15 04:24:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 04:24:18,802 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:18,802 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] [2022-02-15 04:24:18,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 04:24:18,803 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:18,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1819032631, now seen corresponding path program 1 times [2022-02-15 04:24:18,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:18,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711823688] [2022-02-15 04:24:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:18,805 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:18,836 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:18,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711823688] [2022-02-15 04:24:18,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [711823688] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:18,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:18,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:18,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621603860] [2022-02-15 04:24:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:18,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:18,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:18,838 INFO L87 Difference]: Start difference. First operand 497 states and 823 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:18,910 INFO L93 Difference]: Finished difference Result 745 states and 1229 transitions. [2022-02-15 04:24:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:18,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-15 04:24:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:18,913 INFO L225 Difference]: With dead ends: 745 [2022-02-15 04:24:18,913 INFO L226 Difference]: Without dead ends: 507 [2022-02-15 04:24:18,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:18,914 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 128 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:18,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 104 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-02-15 04:24:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2022-02-15 04:24:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 501 states have (on average 1.6367265469061876) internal successors, (820), 501 states have internal predecessors, (820), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 823 transitions. [2022-02-15 04:24:18,939 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 823 transitions. Word has length 25 [2022-02-15 04:24:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:18,939 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 823 transitions. [2022-02-15 04:24:18,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 823 transitions. [2022-02-15 04:24:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 04:24:18,940 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:18,941 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] [2022-02-15 04:24:18,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 04:24:18,941 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1464817415, now seen corresponding path program 1 times [2022-02-15 04:24:18,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:18,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651221483] [2022-02-15 04:24:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:18,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:18,947 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:18,977 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:18,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651221483] [2022-02-15 04:24:18,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1651221483] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:18,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:18,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:18,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170737568] [2022-02-15 04:24:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:18,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:18,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:18,979 INFO L87 Difference]: Start difference. First operand 505 states and 823 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:19,066 INFO L93 Difference]: Finished difference Result 909 states and 1505 transitions. [2022-02-15 04:24:19,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:19,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-15 04:24:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:19,069 INFO L225 Difference]: With dead ends: 909 [2022-02-15 04:24:19,069 INFO L226 Difference]: Without dead ends: 907 [2022-02-15 04:24:19,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:19,070 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 140 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:19,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 74 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-02-15 04:24:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 713. [2022-02-15 04:24:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 709 states have (on average 1.5966149506346967) internal successors, (1132), 709 states have internal predecessors, (1132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1135 transitions. [2022-02-15 04:24:19,117 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1135 transitions. Word has length 25 [2022-02-15 04:24:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:19,117 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1135 transitions. [2022-02-15 04:24:19,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1135 transitions. [2022-02-15 04:24:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 04:24:19,118 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:19,118 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] [2022-02-15 04:24:19,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 04:24:19,119 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:19,119 INFO L85 PathProgramCache]: Analyzing trace with hash 878011401, now seen corresponding path program 1 times [2022-02-15 04:24:19,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:19,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541554062] [2022-02-15 04:24:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:19,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:19,120 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:19,137 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:19,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541554062] [2022-02-15 04:24:19,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1541554062] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:19,137 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:19,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:19,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747360064] [2022-02-15 04:24:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:19,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:19,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:19,138 INFO L87 Difference]: Start difference. First operand 713 states and 1135 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:19,241 INFO L93 Difference]: Finished difference Result 1661 states and 2657 transitions. [2022-02-15 04:24:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-15 04:24:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:19,244 INFO L225 Difference]: With dead ends: 1661 [2022-02-15 04:24:19,244 INFO L226 Difference]: Without dead ends: 971 [2022-02-15 04:24:19,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:19,245 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:19,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 103 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-02-15 04:24:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2022-02-15 04:24:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 965 states have (on average 1.5792746113989637) internal successors, (1524), 965 states have internal predecessors, (1524), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1527 transitions. [2022-02-15 04:24:19,315 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1527 transitions. Word has length 25 [2022-02-15 04:24:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:19,315 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1527 transitions. [2022-02-15 04:24:19,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1527 transitions. [2022-02-15 04:24:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 04:24:19,316 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:19,316 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] [2022-02-15 04:24:19,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 04:24:19,316 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1835085644, now seen corresponding path program 1 times [2022-02-15 04:24:19,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:19,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320001330] [2022-02-15 04:24:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:19,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:19,318 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:19,335 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:19,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320001330] [2022-02-15 04:24:19,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1320001330] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:19,336 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:19,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:19,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746459496] [2022-02-15 04:24:19,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:19,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:19,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:19,337 INFO L87 Difference]: Start difference. First operand 969 states and 1527 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:19,446 INFO L93 Difference]: Finished difference Result 1453 states and 2281 transitions. [2022-02-15 04:24:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:19,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-02-15 04:24:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:19,449 INFO L225 Difference]: With dead ends: 1453 [2022-02-15 04:24:19,450 INFO L226 Difference]: Without dead ends: 987 [2022-02-15 04:24:19,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:19,451 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 127 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:19,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 101 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-02-15 04:24:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 985. [2022-02-15 04:24:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 981 states have (on average 1.5535168195718654) internal successors, (1524), 981 states have internal predecessors, (1524), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1527 transitions. [2022-02-15 04:24:19,505 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1527 transitions. Word has length 26 [2022-02-15 04:24:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:19,505 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 1527 transitions. [2022-02-15 04:24:19,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1527 transitions. [2022-02-15 04:24:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 04:24:19,506 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:19,506 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] [2022-02-15 04:24:19,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 04:24:19,506 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1448764402, now seen corresponding path program 1 times [2022-02-15 04:24:19,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:19,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797105798] [2022-02-15 04:24:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:19,508 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:19,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:19,529 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:19,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797105798] [2022-02-15 04:24:19,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1797105798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:19,529 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:19,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:19,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745531530] [2022-02-15 04:24:19,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:19,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:19,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:19,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:19,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:19,530 INFO L87 Difference]: Start difference. First operand 985 states and 1527 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:19,737 INFO L93 Difference]: Finished difference Result 1741 states and 2745 transitions. [2022-02-15 04:24:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-02-15 04:24:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:19,744 INFO L225 Difference]: With dead ends: 1741 [2022-02-15 04:24:19,744 INFO L226 Difference]: Without dead ends: 1739 [2022-02-15 04:24:19,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:19,747 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 133 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:19,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 73 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-02-15 04:24:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1417. [2022-02-15 04:24:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1413 states have (on average 1.5088464260438783) internal successors, (2132), 1413 states have internal predecessors, (2132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2135 transitions. [2022-02-15 04:24:19,832 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2135 transitions. Word has length 26 [2022-02-15 04:24:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:19,832 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 2135 transitions. [2022-02-15 04:24:19,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:19,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2135 transitions. [2022-02-15 04:24:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 04:24:19,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:19,833 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] [2022-02-15 04:24:19,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 04:24:19,834 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:19,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash 861958388, now seen corresponding path program 1 times [2022-02-15 04:24:19,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:19,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735915270] [2022-02-15 04:24:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:19,835 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:19,859 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:19,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735915270] [2022-02-15 04:24:19,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1735915270] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:19,859 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:19,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:19,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095993575] [2022-02-15 04:24:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:19,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:19,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:19,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:19,860 INFO L87 Difference]: Start difference. First operand 1417 states and 2135 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:20,032 INFO L93 Difference]: Finished difference Result 3277 states and 4953 transitions. [2022-02-15 04:24:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:20,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-02-15 04:24:20,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:20,037 INFO L225 Difference]: With dead ends: 3277 [2022-02-15 04:24:20,037 INFO L226 Difference]: Without dead ends: 1899 [2022-02-15 04:24:20,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:20,039 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 118 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:20,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 105 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-02-15 04:24:20,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1897. [2022-02-15 04:24:20,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1897 states, 1893 states have (on average 1.4896988906497624) internal successors, (2820), 1893 states have internal predecessors, (2820), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2823 transitions. [2022-02-15 04:24:20,173 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2823 transitions. Word has length 26 [2022-02-15 04:24:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:20,173 INFO L470 AbstractCegarLoop]: Abstraction has 1897 states and 2823 transitions. [2022-02-15 04:24:20,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2823 transitions. [2022-02-15 04:24:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 04:24:20,175 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:20,175 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] [2022-02-15 04:24:20,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 04:24:20,175 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1962238590, now seen corresponding path program 1 times [2022-02-15 04:24:20,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:20,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769329273] [2022-02-15 04:24:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:20,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:20,177 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:20,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:20,197 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:20,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769329273] [2022-02-15 04:24:20,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [769329273] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:20,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:20,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:20,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562620139] [2022-02-15 04:24:20,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:20,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:20,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:20,199 INFO L87 Difference]: Start difference. First operand 1897 states and 2823 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:20,354 INFO L93 Difference]: Finished difference Result 2845 states and 4217 transitions. [2022-02-15 04:24:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:20,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 04:24:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:20,359 INFO L225 Difference]: With dead ends: 2845 [2022-02-15 04:24:20,359 INFO L226 Difference]: Without dead ends: 1931 [2022-02-15 04:24:20,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:20,361 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 126 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:20,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 98 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:20,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2022-02-15 04:24:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1929. [2022-02-15 04:24:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1925 states have (on average 1.464935064935065) internal successors, (2820), 1925 states have internal predecessors, (2820), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2823 transitions. [2022-02-15 04:24:20,518 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2823 transitions. Word has length 27 [2022-02-15 04:24:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:20,518 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 2823 transitions. [2022-02-15 04:24:20,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2823 transitions. [2022-02-15 04:24:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 04:24:20,520 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:20,520 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] [2022-02-15 04:24:20,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 04:24:20,520 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 951121340, now seen corresponding path program 1 times [2022-02-15 04:24:20,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:20,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059876932] [2022-02-15 04:24:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:20,522 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:20,537 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:20,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059876932] [2022-02-15 04:24:20,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1059876932] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:20,537 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:20,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:20,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903010758] [2022-02-15 04:24:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:20,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:20,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:20,538 INFO L87 Difference]: Start difference. First operand 1929 states and 2823 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:20,803 INFO L93 Difference]: Finished difference Result 3341 states and 4969 transitions. [2022-02-15 04:24:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 04:24:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:20,812 INFO L225 Difference]: With dead ends: 3341 [2022-02-15 04:24:20,812 INFO L226 Difference]: Without dead ends: 3339 [2022-02-15 04:24:20,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:20,813 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 126 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:20,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 72 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-02-15 04:24:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2825. [2022-02-15 04:24:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2821 states have (on average 1.4193548387096775) internal successors, (4004), 2821 states have internal predecessors, (4004), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4007 transitions. [2022-02-15 04:24:21,027 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4007 transitions. Word has length 27 [2022-02-15 04:24:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:21,027 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 4007 transitions. [2022-02-15 04:24:21,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4007 transitions. [2022-02-15 04:24:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 04:24:21,030 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:21,030 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] [2022-02-15 04:24:21,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 04:24:21,030 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:21,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:21,030 INFO L85 PathProgramCache]: Analyzing trace with hash 364315326, now seen corresponding path program 1 times [2022-02-15 04:24:21,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:21,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036138141] [2022-02-15 04:24:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:21,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:21,032 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:21,053 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:21,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036138141] [2022-02-15 04:24:21,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1036138141] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:21,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:21,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:21,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32934575] [2022-02-15 04:24:21,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:21,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:21,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:21,054 INFO L87 Difference]: Start difference. First operand 2825 states and 4007 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:21,334 INFO L93 Difference]: Finished difference Result 6477 states and 9193 transitions. [2022-02-15 04:24:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 04:24:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:21,344 INFO L225 Difference]: With dead ends: 6477 [2022-02-15 04:24:21,344 INFO L226 Difference]: Without dead ends: 3723 [2022-02-15 04:24:21,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:21,349 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 112 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:21,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 107 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2022-02-15 04:24:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3721. [2022-02-15 04:24:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3717 states have (on average 1.3957492601560397) internal successors, (5188), 3717 states have internal predecessors, (5188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5191 transitions. [2022-02-15 04:24:21,641 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5191 transitions. Word has length 27 [2022-02-15 04:24:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:21,641 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5191 transitions. [2022-02-15 04:24:21,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5191 transitions. [2022-02-15 04:24:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 04:24:21,644 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:21,644 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] [2022-02-15 04:24:21,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 04:24:21,645 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash -579794103, now seen corresponding path program 1 times [2022-02-15 04:24:21,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:21,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928315434] [2022-02-15 04:24:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:21,646 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:21,661 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:21,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928315434] [2022-02-15 04:24:21,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1928315434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:21,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:21,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:21,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856011560] [2022-02-15 04:24:21,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:21,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:21,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:21,662 INFO L87 Difference]: Start difference. First operand 3721 states and 5191 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:21,941 INFO L93 Difference]: Finished difference Result 5581 states and 7753 transitions. [2022-02-15 04:24:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-02-15 04:24:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:21,951 INFO L225 Difference]: With dead ends: 5581 [2022-02-15 04:24:21,951 INFO L226 Difference]: Without dead ends: 3787 [2022-02-15 04:24:21,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:21,954 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 125 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:21,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 95 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:21,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2022-02-15 04:24:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3785. [2022-02-15 04:24:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 3781 states have (on average 1.37212377677863) internal successors, (5188), 3781 states have internal predecessors, (5188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5191 transitions. [2022-02-15 04:24:22,214 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5191 transitions. Word has length 28 [2022-02-15 04:24:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:22,214 INFO L470 AbstractCegarLoop]: Abstraction has 3785 states and 5191 transitions. [2022-02-15 04:24:22,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5191 transitions. [2022-02-15 04:24:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 04:24:22,217 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:22,217 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] [2022-02-15 04:24:22,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 04:24:22,217 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:22,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1590911353, now seen corresponding path program 1 times [2022-02-15 04:24:22,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:22,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557570182] [2022-02-15 04:24:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:22,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:22,218 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:22,234 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:22,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557570182] [2022-02-15 04:24:22,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1557570182] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:22,234 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:22,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:22,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81714703] [2022-02-15 04:24:22,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:22,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:22,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:22,235 INFO L87 Difference]: Start difference. First operand 3785 states and 5191 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:22,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:22,705 INFO L93 Difference]: Finished difference Result 6413 states and 8905 transitions. [2022-02-15 04:24:22,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:22,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-02-15 04:24:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:22,720 INFO L225 Difference]: With dead ends: 6413 [2022-02-15 04:24:22,720 INFO L226 Difference]: Without dead ends: 6411 [2022-02-15 04:24:22,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:22,722 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 119 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:22,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 71 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2022-02-15 04:24:23,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5641. [2022-02-15 04:24:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5641 states, 5637 states have (on average 1.329075749512152) internal successors, (7492), 5637 states have internal predecessors, (7492), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5641 states to 5641 states and 7495 transitions. [2022-02-15 04:24:23,203 INFO L78 Accepts]: Start accepts. Automaton has 5641 states and 7495 transitions. Word has length 28 [2022-02-15 04:24:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:23,203 INFO L470 AbstractCegarLoop]: Abstraction has 5641 states and 7495 transitions. [2022-02-15 04:24:23,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5641 states and 7495 transitions. [2022-02-15 04:24:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 04:24:23,209 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:23,209 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] [2022-02-15 04:24:23,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 04:24:23,209 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:23,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:23,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2117249929, now seen corresponding path program 1 times [2022-02-15 04:24:23,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:23,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599854474] [2022-02-15 04:24:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:23,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:23,211 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:23,230 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:23,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599854474] [2022-02-15 04:24:23,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [599854474] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:23,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:23,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:23,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688988578] [2022-02-15 04:24:23,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:23,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:23,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:23,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:23,231 INFO L87 Difference]: Start difference. First operand 5641 states and 7495 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:23,772 INFO L93 Difference]: Finished difference Result 12813 states and 16969 transitions. [2022-02-15 04:24:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-02-15 04:24:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:23,786 INFO L225 Difference]: With dead ends: 12813 [2022-02-15 04:24:23,786 INFO L226 Difference]: Without dead ends: 7307 [2022-02-15 04:24:23,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:23,795 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 106 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:23,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 109 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7307 states. [2022-02-15 04:24:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7307 to 7305. [2022-02-15 04:24:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7305 states, 7301 states have (on average 1.297904396657992) internal successors, (9476), 7301 states have internal predecessors, (9476), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7305 states to 7305 states and 9479 transitions. [2022-02-15 04:24:24,307 INFO L78 Accepts]: Start accepts. Automaton has 7305 states and 9479 transitions. Word has length 28 [2022-02-15 04:24:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:24,307 INFO L470 AbstractCegarLoop]: Abstraction has 7305 states and 9479 transitions. [2022-02-15 04:24:24,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states and 9479 transitions. [2022-02-15 04:24:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 04:24:24,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:24,314 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] [2022-02-15 04:24:24,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 04:24:24,314 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2073395917, now seen corresponding path program 1 times [2022-02-15 04:24:24,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:24,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590262171] [2022-02-15 04:24:24,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:24,315 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:24,339 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:24,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590262171] [2022-02-15 04:24:24,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1590262171] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:24,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:24,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:24,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041308224] [2022-02-15 04:24:24,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:24,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:24,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:24,340 INFO L87 Difference]: Start difference. First operand 7305 states and 9479 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:24,963 INFO L93 Difference]: Finished difference Result 10957 states and 14153 transitions. [2022-02-15 04:24:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:24,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 04:24:24,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:24,975 INFO L225 Difference]: With dead ends: 10957 [2022-02-15 04:24:24,975 INFO L226 Difference]: Without dead ends: 7435 [2022-02-15 04:24:24,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:24,983 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:24,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 92 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2022-02-15 04:24:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7433. [2022-02-15 04:24:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7433 states, 7429 states have (on average 1.2755417956656347) internal successors, (9476), 7429 states have internal predecessors, (9476), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7433 states to 7433 states and 9479 transitions. [2022-02-15 04:24:25,578 INFO L78 Accepts]: Start accepts. Automaton has 7433 states and 9479 transitions. Word has length 29 [2022-02-15 04:24:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:25,578 INFO L470 AbstractCegarLoop]: Abstraction has 7433 states and 9479 transitions. [2022-02-15 04:24:25,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7433 states and 9479 transitions. [2022-02-15 04:24:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 04:24:25,585 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:25,585 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] [2022-02-15 04:24:25,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 04:24:25,585 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1210454129, now seen corresponding path program 1 times [2022-02-15 04:24:25,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:25,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449440119] [2022-02-15 04:24:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:25,587 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:25,627 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:25,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449440119] [2022-02-15 04:24:25,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [449440119] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:25,628 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:25,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:25,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221310575] [2022-02-15 04:24:25,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:25,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:25,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:25,629 INFO L87 Difference]: Start difference. First operand 7433 states and 9479 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:26,557 INFO L93 Difference]: Finished difference Result 12301 states and 15753 transitions. [2022-02-15 04:24:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:26,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 04:24:26,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:26,576 INFO L225 Difference]: With dead ends: 12301 [2022-02-15 04:24:26,576 INFO L226 Difference]: Without dead ends: 12299 [2022-02-15 04:24:26,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:26,579 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 112 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:26,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12299 states. [2022-02-15 04:24:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12299 to 11273. [2022-02-15 04:24:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11273 states, 11269 states have (on average 1.2384417428343242) internal successors, (13956), 11269 states have internal predecessors, (13956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11273 states to 11273 states and 13959 transitions. [2022-02-15 04:24:27,405 INFO L78 Accepts]: Start accepts. Automaton has 11273 states and 13959 transitions. Word has length 29 [2022-02-15 04:24:27,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:27,405 INFO L470 AbstractCegarLoop]: Abstraction has 11273 states and 13959 transitions. [2022-02-15 04:24:27,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 11273 states and 13959 transitions. [2022-02-15 04:24:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 04:24:27,416 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:27,416 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] [2022-02-15 04:24:27,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 04:24:27,416 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:27,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash 623648115, now seen corresponding path program 1 times [2022-02-15 04:24:27,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:27,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820095168] [2022-02-15 04:24:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:27,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:27,420 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:27,437 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:27,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820095168] [2022-02-15 04:24:27,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [820095168] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:27,438 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:27,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:27,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420192586] [2022-02-15 04:24:27,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:27,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:27,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:27,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:27,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:27,438 INFO L87 Difference]: Start difference. First operand 11273 states and 13959 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:28,695 INFO L93 Difference]: Finished difference Result 25357 states and 31113 transitions. [2022-02-15 04:24:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 04:24:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:28,727 INFO L225 Difference]: With dead ends: 25357 [2022-02-15 04:24:28,727 INFO L226 Difference]: Without dead ends: 14347 [2022-02-15 04:24:28,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:28,748 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 100 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:28,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 111 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 04:24:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14347 states. [2022-02-15 04:24:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14347 to 14345. [2022-02-15 04:24:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14345 states, 14341 states have (on average 1.1962903563210376) internal successors, (17156), 14341 states have internal predecessors, (17156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14345 states to 14345 states and 17159 transitions. [2022-02-15 04:24:29,863 INFO L78 Accepts]: Start accepts. Automaton has 14345 states and 17159 transitions. Word has length 29 [2022-02-15 04:24:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:29,863 INFO L470 AbstractCegarLoop]: Abstraction has 14345 states and 17159 transitions. [2022-02-15 04:24:29,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 14345 states and 17159 transitions. [2022-02-15 04:24:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 04:24:29,876 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:29,876 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] [2022-02-15 04:24:29,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 04:24:29,876 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1130411554, now seen corresponding path program 1 times [2022-02-15 04:24:29,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:29,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576276203] [2022-02-15 04:24:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:29,878 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:29,896 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:29,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576276203] [2022-02-15 04:24:29,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [576276203] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:29,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:29,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:29,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406582094] [2022-02-15 04:24:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:29,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:29,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:29,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:29,897 INFO L87 Difference]: Start difference. First operand 14345 states and 17159 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:30,960 INFO L93 Difference]: Finished difference Result 21517 states and 25609 transitions. [2022-02-15 04:24:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:30,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-15 04:24:30,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:30,984 INFO L225 Difference]: With dead ends: 21517 [2022-02-15 04:24:30,984 INFO L226 Difference]: Without dead ends: 14603 [2022-02-15 04:24:30,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:30,999 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 123 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:31,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 89 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14603 states. [2022-02-15 04:24:32,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14603 to 14601. [2022-02-15 04:24:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14601 states, 14597 states have (on average 1.175309995204494) internal successors, (17156), 14597 states have internal predecessors, (17156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14601 states to 14601 states and 17159 transitions. [2022-02-15 04:24:32,104 INFO L78 Accepts]: Start accepts. Automaton has 14601 states and 17159 transitions. Word has length 30 [2022-02-15 04:24:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:32,105 INFO L470 AbstractCegarLoop]: Abstraction has 14601 states and 17159 transitions. [2022-02-15 04:24:32,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 14601 states and 17159 transitions. [2022-02-15 04:24:32,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 04:24:32,116 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:32,116 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] [2022-02-15 04:24:32,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 04:24:32,116 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:32,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2141528804, now seen corresponding path program 1 times [2022-02-15 04:24:32,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:32,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981654340] [2022-02-15 04:24:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:32,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:32,117 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:32,132 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:32,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981654340] [2022-02-15 04:24:32,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981654340] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:32,132 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:32,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:32,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091083784] [2022-02-15 04:24:32,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:32,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:32,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:32,133 INFO L87 Difference]: Start difference. First operand 14601 states and 17159 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:34,249 INFO L93 Difference]: Finished difference Result 42251 states and 48392 transitions. [2022-02-15 04:24:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-15 04:24:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:34,269 INFO L225 Difference]: With dead ends: 42251 [2022-02-15 04:24:34,269 INFO L226 Difference]: Without dead ends: 14601 [2022-02-15 04:24:34,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:34,307 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 122 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:34,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 86 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14601 states. [2022-02-15 04:24:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14601 to 14601. [2022-02-15 04:24:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14601 states, 14597 states have (on average 1.1051585942316915) internal successors, (16132), 14597 states have internal predecessors, (16132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14601 states to 14601 states and 16135 transitions. [2022-02-15 04:24:35,392 INFO L78 Accepts]: Start accepts. Automaton has 14601 states and 16135 transitions. Word has length 30 [2022-02-15 04:24:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:35,393 INFO L470 AbstractCegarLoop]: Abstraction has 14601 states and 16135 transitions. [2022-02-15 04:24:35,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 14601 states and 16135 transitions. [2022-02-15 04:24:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 04:24:35,402 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:24:35,403 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] [2022-02-15 04:24:35,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 04:24:35,403 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:24:35,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:24:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1554722790, now seen corresponding path program 1 times [2022-02-15 04:24:35,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:24:35,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887934401] [2022-02-15 04:24:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:24:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:24:35,404 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:24:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:24:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:24:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:24:35,425 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:24:35,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887934401] [2022-02-15 04:24:35,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [887934401] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:24:35,425 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:24:35,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:24:35,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162488185] [2022-02-15 04:24:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:24:35,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:24:35,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:24:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:24:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:24:35,426 INFO L87 Difference]: Start difference. First operand 14601 states and 16135 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:24:36,546 INFO L93 Difference]: Finished difference Result 14601 states and 16135 transitions. [2022-02-15 04:24:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:24:36,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-15 04:24:36,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:24:36,547 INFO L225 Difference]: With dead ends: 14601 [2022-02-15 04:24:36,547 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 04:24:36,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:24:36,563 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 68 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:24:36,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 62 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:24:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 04:24:36,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 04:24:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 04:24:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 04:24:36,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-02-15 04:24:36,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:24:36,564 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 04:24:36,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:24:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 04:24:36,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 04:24:36,566 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 04:24:36,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 04:24:36,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-15 04:25:04,924 WARN L228 SmtUtils]: Spent 28.33s on a formula simplification that was a NOOP. DAG size: 1333 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:26:04,847 WARN L228 SmtUtils]: Spent 59.92s on a formula simplification that was a NOOP. DAG size: 1174 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:28:05,264 WARN L228 SmtUtils]: Spent 2.01m on a formula simplification that was a NOOP. DAG size: 2614 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:28:12,187 WARN L228 SmtUtils]: Spent 6.92s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:29:01,953 WARN L228 SmtUtils]: Spent 49.76s on a formula simplification that was a NOOP. DAG size: 1126 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:29:21,292 WARN L228 SmtUtils]: Spent 19.33s on a formula simplification that was a NOOP. DAG size: 1081 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:29:34,052 WARN L228 SmtUtils]: Spent 12.76s on a formula simplification that was a NOOP. DAG size: 1061 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:29:55,804 WARN L228 SmtUtils]: Spent 21.75s on a formula simplification that was a NOOP. DAG size: 950 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:31:53,186 WARN L228 SmtUtils]: Spent 1.96m on a formula simplification that was a NOOP. DAG size: 2613 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:32:06,599 WARN L228 SmtUtils]: Spent 13.41s on a formula simplification that was a NOOP. DAG size: 1065 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:32:22,402 WARN L228 SmtUtils]: Spent 15.80s on a formula simplification that was a NOOP. DAG size: 1085 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:32:41,048 WARN L228 SmtUtils]: Spent 18.64s on a formula simplification that was a NOOP. DAG size: 1079 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:32:53,676 WARN L228 SmtUtils]: Spent 12.62s on a formula simplification that was a NOOP. DAG size: 614 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:33:21,152 WARN L228 SmtUtils]: Spent 27.47s on a formula simplification that was a NOOP. DAG size: 1084 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:33:31,377 WARN L228 SmtUtils]: Spent 10.22s on a formula simplification that was a NOOP. DAG size: 590 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:33:46,811 WARN L228 SmtUtils]: Spent 15.43s on a formula simplification that was a NOOP. DAG size: 1075 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:33:54,808 WARN L228 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 578 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:34:35,956 WARN L228 SmtUtils]: Spent 41.14s on a formula simplification that was a NOOP. DAG size: 1102 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:35:46,434 WARN L228 SmtUtils]: Spent 1.17m on a formula simplification that was a NOOP. DAG size: 1270 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:36:05,259 WARN L228 SmtUtils]: Spent 18.82s on a formula simplification that was a NOOP. DAG size: 1137 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:37:42,909 WARN L228 SmtUtils]: Spent 1.63m on a formula simplification that was a NOOP. DAG size: 1846 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:38:05,145 WARN L228 SmtUtils]: Spent 22.23s on a formula simplification that was a NOOP. DAG size: 1203 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:38:42,042 WARN L228 SmtUtils]: Spent 32.08s on a formula simplification that was a NOOP. DAG size: 1090 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-15 04:38:57,378 WARN L228 SmtUtils]: Spent 15.33s on a formula simplification that was a NOOP. DAG size: 662 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)