/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/loop-acceleration/array_4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:59:10,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:59:10,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:59:10,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:59:10,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:59:10,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:59:10,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:59:10,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 02:59:10,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:59:10,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:59:10,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:59:10,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:59:10,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:59:10,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:59:10,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:59:10,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:59:10,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:59:10,542 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:59:10,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:59:10,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:59:10,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:59:10,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:59:10,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:59:10,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:59:10,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:59:10,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:59:10,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:59:10,543 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 02:59:10,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:59:10,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:59:10,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:59:10,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:59:10,746 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:59:10,747 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:59:10,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_4.i [2022-02-24 02:59:10,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7df28616/bcaf4462443d459b8fac6af8d2cef640/FLAG7db6916b3 [2022-02-24 02:59:11,167 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:59:11,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_4.i [2022-02-24 02:59:11,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7df28616/bcaf4462443d459b8fac6af8d2cef640/FLAG7db6916b3 [2022-02-24 02:59:11,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7df28616/bcaf4462443d459b8fac6af8d2cef640 [2022-02-24 02:59:11,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:59:11,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:59:11,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:59:11,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:59:11,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:59:11,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b30ac4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11, skipping insertion in model container [2022-02-24 02:59:11,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:59:11,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:59:11,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_4.i[848,861] [2022-02-24 02:59:11,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:59:11,391 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:59:11,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_4.i[848,861] [2022-02-24 02:59:11,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:59:11,421 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:59:11,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11 WrapperNode [2022-02-24 02:59:11,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:59:11,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:59:11,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:59:11,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:59:11,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:59:11,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:59:11,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:59:11,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:59:11,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (1/1) ... [2022-02-24 02:59:11,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:59:11,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:59:11,495 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) [2022-02-24 02:59:11,510 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 [2022-02-24 02:59:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:59:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:59:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:59:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 02:59:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:59:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:59:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:59:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-24 02:59:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-24 02:59:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:59:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:59:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:59:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:59:11,568 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:59:11,569 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:59:11,642 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:59:11,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:59:11,646 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-24 02:59:11,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:59:11 BoogieIcfgContainer [2022-02-24 02:59:11,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:59:11,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:59:11,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:59:11,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:59:11,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:59:11" (1/3) ... [2022-02-24 02:59:11,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71165fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:59:11, skipping insertion in model container [2022-02-24 02:59:11,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:59:11" (2/3) ... [2022-02-24 02:59:11,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71165fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:59:11, skipping insertion in model container [2022-02-24 02:59:11,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:59:11" (3/3) ... [2022-02-24 02:59:11,658 INFO L111 eAbstractionObserver]: Analyzing ICFG array_4.i [2022-02-24 02:59:11,661 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:59:11,661 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:59:11,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:59:11,694 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 [2022-02-24 02:59:11,694 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:59:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 02:59:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-24 02:59:11,707 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:11,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:11,708 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash -615726646, now seen corresponding path program 1 times [2022-02-24 02:59:11,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:11,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278652278] [2022-02-24 02:59:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:11,755 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:59:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:11,863 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:11,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278652278] [2022-02-24 02:59:11,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1278652278] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:11,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:11,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-24 02:59:11,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371353684] [2022-02-24 02:59:11,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:11,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-24 02:59:11,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-24 02:59:11,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 02:59:11,902 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:11,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:11,934 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-02-24 02:59:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-24 02:59:11,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-24 02:59:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:11,939 INFO L225 Difference]: With dead ends: 40 [2022-02-24 02:59:11,940 INFO L226 Difference]: Without dead ends: 17 [2022-02-24 02:59:11,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 02:59:11,944 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:11,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-24 02:59:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-24 02:59:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-02-24 02:59:11,973 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2022-02-24 02:59:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:11,974 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-02-24 02:59:11,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-02-24 02:59:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-24 02:59:11,974 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:11,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:11,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:59:11,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash 238110415, now seen corresponding path program 1 times [2022-02-24 02:59:11,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:11,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157600270] [2022-02-24 02:59:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:11,978 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:59:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:12,038 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:12,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157600270] [2022-02-24 02:59:12,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1157600270] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:12,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:12,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 02:59:12,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313064870] [2022-02-24 02:59:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:12,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 02:59:12,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 02:59:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 02:59:12,040 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:12,071 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-02-24 02:59:12,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 02:59:12,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-02-24 02:59:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:12,073 INFO L225 Difference]: With dead ends: 32 [2022-02-24 02:59:12,073 INFO L226 Difference]: Without dead ends: 23 [2022-02-24 02:59:12,074 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 [2022-02-24 02:59:12,075 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:12,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 21 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-24 02:59:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2022-02-24 02:59:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-02-24 02:59:12,080 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2022-02-24 02:59:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:12,081 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-02-24 02:59:12,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-02-24 02:59:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-24 02:59:12,081 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:12,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:12,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:59:12,082 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:12,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1502803825, now seen corresponding path program 1 times [2022-02-24 02:59:12,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:12,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268895795] [2022-02-24 02:59:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:12,095 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:12,095 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:12,150 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:12,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268895795] [2022-02-24 02:59:12,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268895795] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:12,151 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:12,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:59:12,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089719590] [2022-02-24 02:59:12,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:12,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:59:12,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:12,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:59:12,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:59:12,152 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:12,206 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-02-24 02:59:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:59:12,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-02-24 02:59:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:12,207 INFO L225 Difference]: With dead ends: 38 [2022-02-24 02:59:12,207 INFO L226 Difference]: Without dead ends: 29 [2022-02-24 02:59:12,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:59:12,208 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:12,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 21 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-24 02:59:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-02-24 02:59:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-02-24 02:59:12,214 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2022-02-24 02:59:12,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:12,214 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-02-24 02:59:12,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,214 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-02-24 02:59:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-24 02:59:12,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:12,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:12,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:59:12,215 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1397426067, now seen corresponding path program 2 times [2022-02-24 02:59:12,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:12,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134344350] [2022-02-24 02:59:12,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:12,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:12,220 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:12,220 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:12,283 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:12,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134344350] [2022-02-24 02:59:12,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2134344350] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:12,284 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:12,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:59:12,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056397526] [2022-02-24 02:59:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:12,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:59:12,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:59:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:59:12,285 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:12,340 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-02-24 02:59:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 02:59:12,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-02-24 02:59:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:12,341 INFO L225 Difference]: With dead ends: 28 [2022-02-24 02:59:12,342 INFO L226 Difference]: Without dead ends: 23 [2022-02-24 02:59:12,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:59:12,344 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:12,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-24 02:59:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-02-24 02:59:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-02-24 02:59:12,350 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2022-02-24 02:59:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:12,350 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-02-24 02:59:12,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-02-24 02:59:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-24 02:59:12,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:12,351 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:12,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 02:59:12,352 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:12,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:12,352 INFO L85 PathProgramCache]: Analyzing trace with hash -706411172, now seen corresponding path program 1 times [2022-02-24 02:59:12,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:12,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908017631] [2022-02-24 02:59:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:12,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:12,356 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:12,356 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:12,414 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:12,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908017631] [2022-02-24 02:59:12,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [908017631] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:12,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:12,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 02:59:12,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586884245] [2022-02-24 02:59:12,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:12,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 02:59:12,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 02:59:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:59:12,416 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:12,490 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-02-24 02:59:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 02:59:12,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-24 02:59:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:12,492 INFO L225 Difference]: With dead ends: 32 [2022-02-24 02:59:12,492 INFO L226 Difference]: Without dead ends: 27 [2022-02-24 02:59:12,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:59:12,499 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:12,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 30 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-24 02:59:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-02-24 02:59:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-02-24 02:59:12,507 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2022-02-24 02:59:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:12,507 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-02-24 02:59:12,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-02-24 02:59:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-24 02:59:12,508 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:12,508 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:12,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 02:59:12,508 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:12,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash 336152307, now seen corresponding path program 2 times [2022-02-24 02:59:12,509 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:12,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349138600] [2022-02-24 02:59:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:12,512 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:12,512 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:12,554 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:12,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349138600] [2022-02-24 02:59:12,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [349138600] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:12,554 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:12,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:59:12,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192195360] [2022-02-24 02:59:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:12,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:59:12,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:59:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:59:12,555 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:12,609 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-02-24 02:59:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 02:59:12,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-02-24 02:59:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:12,611 INFO L225 Difference]: With dead ends: 47 [2022-02-24 02:59:12,612 INFO L226 Difference]: Without dead ends: 33 [2022-02-24 02:59:12,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:59:12,617 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:12,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 31 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:12,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-24 02:59:12,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2022-02-24 02:59:12,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-02-24 02:59:12,628 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2022-02-24 02:59:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:12,628 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-02-24 02:59:12,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-02-24 02:59:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-24 02:59:12,639 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:12,639 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:12,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 02:59:12,639 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:12,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:12,640 INFO L85 PathProgramCache]: Analyzing trace with hash -842525419, now seen corresponding path program 3 times [2022-02-24 02:59:12,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:12,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504813410] [2022-02-24 02:59:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:12,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:12,648 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:12,648 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:12,703 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:12,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504813410] [2022-02-24 02:59:12,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1504813410] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:12,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:12,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 02:59:12,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772306650] [2022-02-24 02:59:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:12,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 02:59:12,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 02:59:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:59:12,704 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:12,787 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-02-24 02:59:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 02:59:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-02-24 02:59:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:12,789 INFO L225 Difference]: With dead ends: 53 [2022-02-24 02:59:12,789 INFO L226 Difference]: Without dead ends: 39 [2022-02-24 02:59:12,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:59:12,790 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:12,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 26 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-24 02:59:12,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2022-02-24 02:59:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-02-24 02:59:12,796 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2022-02-24 02:59:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:12,796 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-02-24 02:59:12,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,796 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-02-24 02:59:12,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-24 02:59:12,797 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:12,797 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:12,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 02:59:12,797 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:12,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:12,798 INFO L85 PathProgramCache]: Analyzing trace with hash 319546039, now seen corresponding path program 4 times [2022-02-24 02:59:12,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:12,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990674751] [2022-02-24 02:59:12,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:12,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:12,804 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:12,804 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:12,865 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:12,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990674751] [2022-02-24 02:59:12,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [990674751] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:12,865 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:12,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:59:12,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879798442] [2022-02-24 02:59:12,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:12,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:59:12,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:59:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:59:12,869 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:12,963 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-02-24 02:59:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 02:59:12,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-02-24 02:59:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:12,965 INFO L225 Difference]: With dead ends: 59 [2022-02-24 02:59:12,965 INFO L226 Difference]: Without dead ends: 45 [2022-02-24 02:59:12,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:59:12,966 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 55 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:12,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 26 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-24 02:59:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2022-02-24 02:59:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-02-24 02:59:12,978 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2022-02-24 02:59:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:12,979 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-02-24 02:59:12,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-02-24 02:59:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-24 02:59:12,981 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:12,981 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:12,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 02:59:12,982 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:12,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:12,982 INFO L85 PathProgramCache]: Analyzing trace with hash 378720217, now seen corresponding path program 5 times [2022-02-24 02:59:12,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:12,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126440795] [2022-02-24 02:59:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:12,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:12,987 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:12,987 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:13,059 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:13,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126440795] [2022-02-24 02:59:13,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2126440795] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:13,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:13,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:59:13,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486904433] [2022-02-24 02:59:13,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:13,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:59:13,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:13,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:59:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:59:13,061 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:13,154 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2022-02-24 02:59:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 02:59:13,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-24 02:59:13,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:13,156 INFO L225 Difference]: With dead ends: 65 [2022-02-24 02:59:13,156 INFO L226 Difference]: Without dead ends: 51 [2022-02-24 02:59:13,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:59:13,158 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:13,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 31 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:59:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-24 02:59:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2022-02-24 02:59:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-02-24 02:59:13,168 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2022-02-24 02:59:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:13,169 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-02-24 02:59:13,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-02-24 02:59:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-24 02:59:13,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:13,169 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:13,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 02:59:13,170 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:13,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:13,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1410530427, now seen corresponding path program 6 times [2022-02-24 02:59:13,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:13,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668270912] [2022-02-24 02:59:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:13,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:13,178 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:13,178 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:13,278 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:13,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668270912] [2022-02-24 02:59:13,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1668270912] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:13,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:13,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:59:13,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443886472] [2022-02-24 02:59:13,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:13,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:59:13,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:13,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:59:13,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:59:13,280 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:13,394 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-02-24 02:59:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 02:59:13,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-02-24 02:59:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:13,395 INFO L225 Difference]: With dead ends: 71 [2022-02-24 02:59:13,395 INFO L226 Difference]: Without dead ends: 57 [2022-02-24 02:59:13,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:59:13,397 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 82 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:13,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 26 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-24 02:59:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 35. [2022-02-24 02:59:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-02-24 02:59:13,409 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2022-02-24 02:59:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:13,409 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-02-24 02:59:13,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-02-24 02:59:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-24 02:59:13,413 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:13,414 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:13,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 02:59:13,414 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 842696861, now seen corresponding path program 7 times [2022-02-24 02:59:13,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:13,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693820564] [2022-02-24 02:59:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:13,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:13,420 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:13,421 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:13,501 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:13,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693820564] [2022-02-24 02:59:13,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1693820564] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:13,501 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:13,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:59:13,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972999419] [2022-02-24 02:59:13,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:13,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:59:13,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:59:13,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:59:13,503 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:13,610 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2022-02-24 02:59:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 02:59:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-02-24 02:59:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:13,612 INFO L225 Difference]: With dead ends: 77 [2022-02-24 02:59:13,612 INFO L226 Difference]: Without dead ends: 63 [2022-02-24 02:59:13,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:59:13,612 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:13,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 36 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-24 02:59:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 37. [2022-02-24 02:59:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2022-02-24 02:59:13,620 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2022-02-24 02:59:13,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:13,620 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2022-02-24 02:59:13,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2022-02-24 02:59:13,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-24 02:59:13,622 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:13,622 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:13,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 02:59:13,622 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash 615486527, now seen corresponding path program 8 times [2022-02-24 02:59:13,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:13,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253873068] [2022-02-24 02:59:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:13,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:13,626 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:13,626 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:13,719 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:13,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253873068] [2022-02-24 02:59:13,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1253873068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:13,719 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:13,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:59:13,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029334556] [2022-02-24 02:59:13,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:13,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:59:13,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:13,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:59:13,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:59:13,720 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:13,876 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2022-02-24 02:59:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:59:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-02-24 02:59:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:13,877 INFO L225 Difference]: With dead ends: 83 [2022-02-24 02:59:13,877 INFO L226 Difference]: Without dead ends: 69 [2022-02-24 02:59:13,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:59:13,878 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 88 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:13,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 46 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-24 02:59:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2022-02-24 02:59:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-02-24 02:59:13,887 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2022-02-24 02:59:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:13,888 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-02-24 02:59:13,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-02-24 02:59:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-24 02:59:13,889 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:13,889 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:13,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 02:59:13,889 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1309687649, now seen corresponding path program 9 times [2022-02-24 02:59:13,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:13,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367760779] [2022-02-24 02:59:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:13,892 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:13,892 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:13,982 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:13,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367760779] [2022-02-24 02:59:13,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [367760779] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:13,982 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:13,982 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:59:13,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55782421] [2022-02-24 02:59:13,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:13,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:59:13,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:13,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:59:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:59:13,983 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:14,141 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2022-02-24 02:59:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:59:14,141 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-02-24 02:59:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:14,142 INFO L225 Difference]: With dead ends: 89 [2022-02-24 02:59:14,142 INFO L226 Difference]: Without dead ends: 75 [2022-02-24 02:59:14,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:59:14,142 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 135 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:14,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 26 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-24 02:59:14,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 41. [2022-02-24 02:59:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-02-24 02:59:14,147 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2022-02-24 02:59:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:14,147 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-02-24 02:59:14,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-02-24 02:59:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 02:59:14,148 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:14,148 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:14,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 02:59:14,148 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1577932285, now seen corresponding path program 10 times [2022-02-24 02:59:14,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:14,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518481968] [2022-02-24 02:59:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:14,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:14,151 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:14,151 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:14,236 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:14,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518481968] [2022-02-24 02:59:14,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1518481968] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:14,236 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:14,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:59:14,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290808401] [2022-02-24 02:59:14,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:14,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:59:14,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:59:14,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:59:14,237 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:14,437 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2022-02-24 02:59:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:59:14,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-02-24 02:59:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:14,438 INFO L225 Difference]: With dead ends: 95 [2022-02-24 02:59:14,439 INFO L226 Difference]: Without dead ends: 81 [2022-02-24 02:59:14,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:59:14,439 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 124 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:14,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 36 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-24 02:59:14,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 43. [2022-02-24 02:59:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2022-02-24 02:59:14,446 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2022-02-24 02:59:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:14,447 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2022-02-24 02:59:14,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2022-02-24 02:59:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-24 02:59:14,447 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:14,447 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:14,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 02:59:14,448 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2031815643, now seen corresponding path program 11 times [2022-02-24 02:59:14,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:14,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448316116] [2022-02-24 02:59:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:14,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:14,452 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:14,452 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:14,547 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:14,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448316116] [2022-02-24 02:59:14,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [448316116] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:14,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:14,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:59:14,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640744094] [2022-02-24 02:59:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:14,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:59:14,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:59:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:59:14,548 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:14,765 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2022-02-24 02:59:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:59:14,765 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-02-24 02:59:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:14,766 INFO L225 Difference]: With dead ends: 101 [2022-02-24 02:59:14,766 INFO L226 Difference]: Without dead ends: 87 [2022-02-24 02:59:14,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:59:14,768 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 127 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:14,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 41 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:14,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-24 02:59:14,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 45. [2022-02-24 02:59:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-02-24 02:59:14,775 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2022-02-24 02:59:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:14,775 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-02-24 02:59:14,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-02-24 02:59:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-24 02:59:14,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:14,776 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:14,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 02:59:14,776 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:14,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:14,777 INFO L85 PathProgramCache]: Analyzing trace with hash -127058489, now seen corresponding path program 12 times [2022-02-24 02:59:14,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:14,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040080209] [2022-02-24 02:59:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:14,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:14,780 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:14,780 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:14,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:14,908 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:14,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040080209] [2022-02-24 02:59:14,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2040080209] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:14,908 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:14,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:59:14,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869513705] [2022-02-24 02:59:14,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:14,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:59:14,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:14,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:59:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:59:14,909 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:15,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:15,127 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2022-02-24 02:59:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:59:15,127 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-02-24 02:59:15,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:15,128 INFO L225 Difference]: With dead ends: 107 [2022-02-24 02:59:15,128 INFO L226 Difference]: Without dead ends: 93 [2022-02-24 02:59:15,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:59:15,129 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 132 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:15,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 51 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-24 02:59:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 47. [2022-02-24 02:59:15,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-02-24 02:59:15,136 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2022-02-24 02:59:15,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:15,136 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-02-24 02:59:15,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-02-24 02:59:15,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 02:59:15,136 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:15,136 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:15,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 02:59:15,136 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:15,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash 688498409, now seen corresponding path program 13 times [2022-02-24 02:59:15,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:15,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740552025] [2022-02-24 02:59:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:15,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:15,139 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:15,140 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:15,262 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:15,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740552025] [2022-02-24 02:59:15,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [740552025] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:15,263 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:15,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 02:59:15,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416816019] [2022-02-24 02:59:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:15,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 02:59:15,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:15,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 02:59:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:59:15,264 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:15,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:15,556 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2022-02-24 02:59:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:59:15,556 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-02-24 02:59:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:15,557 INFO L225 Difference]: With dead ends: 113 [2022-02-24 02:59:15,557 INFO L226 Difference]: Without dead ends: 99 [2022-02-24 02:59:15,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:59:15,558 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 156 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:15,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 46 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-24 02:59:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 49. [2022-02-24 02:59:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-02-24 02:59:15,564 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2022-02-24 02:59:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:15,564 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-02-24 02:59:15,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-02-24 02:59:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-24 02:59:15,565 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:15,565 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:15,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 02:59:15,565 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:15,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:15,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1540337781, now seen corresponding path program 14 times [2022-02-24 02:59:15,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:15,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19255247] [2022-02-24 02:59:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:15,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:15,568 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:15,568 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:15,706 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:15,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19255247] [2022-02-24 02:59:15,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [19255247] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:15,706 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:15,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 02:59:15,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486610388] [2022-02-24 02:59:15,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:15,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 02:59:15,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 02:59:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:59:15,707 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:16,014 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2022-02-24 02:59:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:59:16,014 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-02-24 02:59:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:16,015 INFO L225 Difference]: With dead ends: 119 [2022-02-24 02:59:16,015 INFO L226 Difference]: Without dead ends: 105 [2022-02-24 02:59:16,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 02:59:16,016 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 169 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:16,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 41 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:16,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-02-24 02:59:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 51. [2022-02-24 02:59:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-02-24 02:59:16,023 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2022-02-24 02:59:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:16,023 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-02-24 02:59:16,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-02-24 02:59:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 02:59:16,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:16,024 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:16,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 02:59:16,024 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:16,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:16,024 INFO L85 PathProgramCache]: Analyzing trace with hash -263235667, now seen corresponding path program 15 times [2022-02-24 02:59:16,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:16,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600239654] [2022-02-24 02:59:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:16,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:16,026 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:16,026 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:16,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:16,158 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:16,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600239654] [2022-02-24 02:59:16,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1600239654] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:16,158 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:16,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 02:59:16,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818923405] [2022-02-24 02:59:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:16,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 02:59:16,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 02:59:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:59:16,159 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:16,468 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2022-02-24 02:59:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:59:16,468 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-02-24 02:59:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:16,469 INFO L225 Difference]: With dead ends: 125 [2022-02-24 02:59:16,469 INFO L226 Difference]: Without dead ends: 111 [2022-02-24 02:59:16,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:59:16,471 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 201 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:16,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 26 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-24 02:59:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 53. [2022-02-24 02:59:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2022-02-24 02:59:16,478 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2022-02-24 02:59:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:16,478 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2022-02-24 02:59:16,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2022-02-24 02:59:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-24 02:59:16,479 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:16,479 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:16,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 02:59:16,479 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1328750769, now seen corresponding path program 16 times [2022-02-24 02:59:16,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:16,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980982702] [2022-02-24 02:59:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:16,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:16,484 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:16,484 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:16,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:16,628 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:16,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980982702] [2022-02-24 02:59:16,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1980982702] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:16,628 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:16,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 02:59:16,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863899297] [2022-02-24 02:59:16,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:16,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 02:59:16,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:16,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 02:59:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:59:16,630 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:16,953 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2022-02-24 02:59:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:59:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-02-24 02:59:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:16,954 INFO L225 Difference]: With dead ends: 131 [2022-02-24 02:59:16,954 INFO L226 Difference]: Without dead ends: 117 [2022-02-24 02:59:16,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 02:59:16,955 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 212 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:16,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 36 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-24 02:59:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 55. [2022-02-24 02:59:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2022-02-24 02:59:16,963 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2022-02-24 02:59:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:16,963 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2022-02-24 02:59:16,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:16,964 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2022-02-24 02:59:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 02:59:16,964 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:16,964 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:16,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 02:59:16,964 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:16,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1208419953, now seen corresponding path program 17 times [2022-02-24 02:59:16,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:16,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6271289] [2022-02-24 02:59:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:16,967 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:16,967 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:17,113 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:17,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6271289] [2022-02-24 02:59:17,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [6271289] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:17,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:17,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 02:59:17,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418338697] [2022-02-24 02:59:17,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:17,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 02:59:17,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:17,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 02:59:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:59:17,115 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:17,461 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2022-02-24 02:59:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:59:17,461 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-02-24 02:59:17,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:17,462 INFO L225 Difference]: With dead ends: 137 [2022-02-24 02:59:17,462 INFO L226 Difference]: Without dead ends: 123 [2022-02-24 02:59:17,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 02:59:17,463 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 244 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:17,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 36 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-02-24 02:59:17,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 57. [2022-02-24 02:59:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-02-24 02:59:17,473 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2022-02-24 02:59:17,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:17,474 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-02-24 02:59:17,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:17,474 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-02-24 02:59:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 02:59:17,474 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:17,474 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:17,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 02:59:17,474 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:17,475 INFO L85 PathProgramCache]: Analyzing trace with hash -111940333, now seen corresponding path program 18 times [2022-02-24 02:59:17,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:17,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275850908] [2022-02-24 02:59:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:17,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:17,477 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:17,477 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:17,664 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:17,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275850908] [2022-02-24 02:59:17,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [275850908] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:17,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:17,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 02:59:17,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928152052] [2022-02-24 02:59:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:17,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 02:59:17,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:17,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 02:59:17,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:59:17,666 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 21 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:18,038 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2022-02-24 02:59:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 02:59:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 21 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-02-24 02:59:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:18,040 INFO L225 Difference]: With dead ends: 143 [2022-02-24 02:59:18,040 INFO L226 Difference]: Without dead ends: 129 [2022-02-24 02:59:18,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 02:59:18,041 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 263 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:18,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 26 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-24 02:59:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 59. [2022-02-24 02:59:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2022-02-24 02:59:18,050 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2022-02-24 02:59:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:18,050 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2022-02-24 02:59:18,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 21 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2022-02-24 02:59:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 02:59:18,050 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:18,050 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:18,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 02:59:18,050 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1962822859, now seen corresponding path program 19 times [2022-02-24 02:59:18,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:18,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241387317] [2022-02-24 02:59:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:18,055 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:18,055 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:18,234 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:18,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241387317] [2022-02-24 02:59:18,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1241387317] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:18,234 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:18,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 02:59:18,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359378344] [2022-02-24 02:59:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:18,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 02:59:18,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 02:59:18,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:59:18,235 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:18,698 INFO L93 Difference]: Finished difference Result 149 states and 169 transitions. [2022-02-24 02:59:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 02:59:18,698 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-02-24 02:59:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:18,699 INFO L225 Difference]: With dead ends: 149 [2022-02-24 02:59:18,699 INFO L226 Difference]: Without dead ends: 135 [2022-02-24 02:59:18,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:59:18,700 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 275 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:18,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 26 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:18,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-02-24 02:59:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 61. [2022-02-24 02:59:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2022-02-24 02:59:18,715 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2022-02-24 02:59:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:18,715 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2022-02-24 02:59:18,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2022-02-24 02:59:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 02:59:18,715 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:18,716 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:18,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 02:59:18,716 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1750497495, now seen corresponding path program 20 times [2022-02-24 02:59:18,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:18,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063677177] [2022-02-24 02:59:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:18,718 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:18,718 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:18,904 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:18,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063677177] [2022-02-24 02:59:18,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1063677177] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:18,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:18,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 02:59:18,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184675866] [2022-02-24 02:59:18,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:18,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 02:59:18,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:18,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 02:59:18,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:59:18,905 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:19,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:19,370 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2022-02-24 02:59:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:59:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2022-02-24 02:59:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:19,371 INFO L225 Difference]: With dead ends: 155 [2022-02-24 02:59:19,371 INFO L226 Difference]: Without dead ends: 141 [2022-02-24 02:59:19,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 02:59:19,372 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 232 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:19,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 51 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-02-24 02:59:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 63. [2022-02-24 02:59:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2022-02-24 02:59:19,382 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2022-02-24 02:59:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:19,382 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2022-02-24 02:59:19,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2022-02-24 02:59:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 02:59:19,383 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:19,383 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:19,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 02:59:19,383 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1133534713, now seen corresponding path program 21 times [2022-02-24 02:59:19,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:19,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440389664] [2022-02-24 02:59:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:19,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:19,385 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:19,385 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:19,601 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:19,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440389664] [2022-02-24 02:59:19,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [440389664] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:19,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:19,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 02:59:19,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791254686] [2022-02-24 02:59:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:19,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 02:59:19,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 02:59:19,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:59:19,602 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:20,110 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2022-02-24 02:59:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:59:20,111 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2022-02-24 02:59:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:20,111 INFO L225 Difference]: With dead ends: 161 [2022-02-24 02:59:20,111 INFO L226 Difference]: Without dead ends: 147 [2022-02-24 02:59:20,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 02:59:20,112 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 274 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:20,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 36 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:20,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-02-24 02:59:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 65. [2022-02-24 02:59:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-02-24 02:59:20,128 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2022-02-24 02:59:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:20,128 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-02-24 02:59:20,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-02-24 02:59:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-24 02:59:20,129 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:20,129 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:20,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 02:59:20,129 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:20,130 INFO L85 PathProgramCache]: Analyzing trace with hash 937788059, now seen corresponding path program 22 times [2022-02-24 02:59:20,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:20,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314740669] [2022-02-24 02:59:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:20,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:20,132 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:20,132 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:20,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:20,367 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:20,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314740669] [2022-02-24 02:59:20,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [314740669] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:20,367 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:20,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 02:59:20,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461001066] [2022-02-24 02:59:20,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:20,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 02:59:20,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 02:59:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:59:20,368 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:20,907 INFO L93 Difference]: Finished difference Result 167 states and 190 transitions. [2022-02-24 02:59:20,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 02:59:20,908 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-02-24 02:59:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:20,908 INFO L225 Difference]: With dead ends: 167 [2022-02-24 02:59:20,908 INFO L226 Difference]: Without dead ends: 153 [2022-02-24 02:59:20,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 02:59:20,910 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 290 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:20,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 41 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-02-24 02:59:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 67. [2022-02-24 02:59:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2022-02-24 02:59:20,923 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2022-02-24 02:59:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:20,923 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2022-02-24 02:59:20,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2022-02-24 02:59:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 02:59:20,923 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:20,923 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:20,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 02:59:20,924 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:20,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1803814589, now seen corresponding path program 23 times [2022-02-24 02:59:20,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:20,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451572770] [2022-02-24 02:59:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:20,928 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:20,928 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:21,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:21,192 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:21,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451572770] [2022-02-24 02:59:21,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1451572770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:21,192 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:21,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:59:21,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357905720] [2022-02-24 02:59:21,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:21,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:59:21,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:21,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:59:21,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:59:21,193 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:21,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:21,769 INFO L93 Difference]: Finished difference Result 173 states and 197 transitions. [2022-02-24 02:59:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:59:21,770 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-02-24 02:59:21,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:21,771 INFO L225 Difference]: With dead ends: 173 [2022-02-24 02:59:21,771 INFO L226 Difference]: Without dead ends: 159 [2022-02-24 02:59:21,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 02:59:21,773 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 365 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:21,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 26 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-02-24 02:59:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 69. [2022-02-24 02:59:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-02-24 02:59:21,795 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2022-02-24 02:59:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:21,795 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-02-24 02:59:21,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-02-24 02:59:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 02:59:21,796 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:21,796 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:21,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 02:59:21,796 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash 831654495, now seen corresponding path program 24 times [2022-02-24 02:59:21,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:21,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848632870] [2022-02-24 02:59:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:21,799 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:21,799 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:22,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:22,040 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:22,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848632870] [2022-02-24 02:59:22,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1848632870] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:22,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:22,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 02:59:22,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614333422] [2022-02-24 02:59:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:22,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 02:59:22,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:22,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 02:59:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:59:22,041 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 27 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:22,676 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2022-02-24 02:59:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 02:59:22,676 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 27 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-02-24 02:59:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:22,677 INFO L225 Difference]: With dead ends: 179 [2022-02-24 02:59:22,677 INFO L226 Difference]: Without dead ends: 165 [2022-02-24 02:59:22,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 02:59:22,678 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 349 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:22,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 31 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-02-24 02:59:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 71. [2022-02-24 02:59:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-02-24 02:59:22,691 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2022-02-24 02:59:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:22,692 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-02-24 02:59:22,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 27 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-02-24 02:59:22,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 02:59:22,692 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:22,692 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:22,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 02:59:22,692 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:22,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:22,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1406292607, now seen corresponding path program 25 times [2022-02-24 02:59:22,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:22,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885135229] [2022-02-24 02:59:22,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:22,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:22,695 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:22,695 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:22,943 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:22,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885135229] [2022-02-24 02:59:22,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1885135229] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:22,943 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:22,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 02:59:22,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151644088] [2022-02-24 02:59:22,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:22,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 02:59:22,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:22,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 02:59:22,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:59:22,944 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:23,581 INFO L93 Difference]: Finished difference Result 185 states and 211 transitions. [2022-02-24 02:59:23,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 02:59:23,581 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-02-24 02:59:23,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:23,582 INFO L225 Difference]: With dead ends: 185 [2022-02-24 02:59:23,582 INFO L226 Difference]: Without dead ends: 171 [2022-02-24 02:59:23,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 02:59:23,583 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 368 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:23,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 26 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-02-24 02:59:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 73. [2022-02-24 02:59:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-02-24 02:59:23,597 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2022-02-24 02:59:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:23,597 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-02-24 02:59:23,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:23,597 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-02-24 02:59:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 02:59:23,597 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:23,597 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:23,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 02:59:23,598 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash -294842333, now seen corresponding path program 26 times [2022-02-24 02:59:23,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:23,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410584968] [2022-02-24 02:59:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:23,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:23,600 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:23,600 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:23,897 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:23,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410584968] [2022-02-24 02:59:23,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [410584968] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:23,898 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:23,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 02:59:23,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417594278] [2022-02-24 02:59:23,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:23,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 02:59:23,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 02:59:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:59:23,899 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 29 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:24,589 INFO L93 Difference]: Finished difference Result 191 states and 218 transitions. [2022-02-24 02:59:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 02:59:24,592 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 29 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2022-02-24 02:59:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:24,592 INFO L225 Difference]: With dead ends: 191 [2022-02-24 02:59:24,592 INFO L226 Difference]: Without dead ends: 177 [2022-02-24 02:59:24,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 02:59:24,593 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 371 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:24,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 31 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-24 02:59:24,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 75. [2022-02-24 02:59:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2022-02-24 02:59:24,608 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2022-02-24 02:59:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:24,608 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2022-02-24 02:59:24,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 29 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2022-02-24 02:59:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 02:59:24,609 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:24,609 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:24,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 02:59:24,609 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:24,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1637985723, now seen corresponding path program 27 times [2022-02-24 02:59:24,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:24,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415912137] [2022-02-24 02:59:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:24,612 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:24,612 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:24,920 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:24,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415912137] [2022-02-24 02:59:24,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1415912137] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:24,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:24,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 02:59:24,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752468510] [2022-02-24 02:59:24,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:24,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 02:59:24,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:24,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 02:59:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:59:24,922 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:25,713 INFO L93 Difference]: Finished difference Result 197 states and 225 transitions. [2022-02-24 02:59:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 02:59:25,714 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2022-02-24 02:59:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:25,715 INFO L225 Difference]: With dead ends: 197 [2022-02-24 02:59:25,715 INFO L226 Difference]: Without dead ends: 183 [2022-02-24 02:59:25,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 02:59:25,716 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 336 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:25,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 56 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-02-24 02:59:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 77. [2022-02-24 02:59:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2022-02-24 02:59:25,731 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2022-02-24 02:59:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:25,731 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2022-02-24 02:59:25,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2022-02-24 02:59:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 02:59:25,732 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:25,732 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:25,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 02:59:25,732 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:25,732 INFO L85 PathProgramCache]: Analyzing trace with hash 386372583, now seen corresponding path program 28 times [2022-02-24 02:59:25,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:25,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622773685] [2022-02-24 02:59:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:25,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:25,735 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:25,735 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:26,050 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:26,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622773685] [2022-02-24 02:59:26,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1622773685] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:26,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:26,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-24 02:59:26,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856749790] [2022-02-24 02:59:26,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:26,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-24 02:59:26,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:26,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-24 02:59:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-02-24 02:59:26,052 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 31 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:26,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:26,869 INFO L93 Difference]: Finished difference Result 203 states and 232 transitions. [2022-02-24 02:59:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 02:59:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 31 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2022-02-24 02:59:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:26,870 INFO L225 Difference]: With dead ends: 203 [2022-02-24 02:59:26,870 INFO L226 Difference]: Without dead ends: 189 [2022-02-24 02:59:26,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 02:59:26,871 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 523 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:26,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 26 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-02-24 02:59:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 79. [2022-02-24 02:59:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2022-02-24 02:59:26,888 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2022-02-24 02:59:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:26,888 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2022-02-24 02:59:26,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 31 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:26,888 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2022-02-24 02:59:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 02:59:26,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:26,888 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:26,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 02:59:26,889 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:26,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:26,889 INFO L85 PathProgramCache]: Analyzing trace with hash 174519561, now seen corresponding path program 29 times [2022-02-24 02:59:26,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:26,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854831867] [2022-02-24 02:59:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:26,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:26,891 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:26,891 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:27,240 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:27,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854831867] [2022-02-24 02:59:27,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1854831867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:27,240 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:27,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-24 02:59:27,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679441205] [2022-02-24 02:59:27,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:27,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-24 02:59:27,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-24 02:59:27,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 02:59:27,242 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:28,070 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2022-02-24 02:59:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 02:59:28,070 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2022-02-24 02:59:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:28,071 INFO L225 Difference]: With dead ends: 209 [2022-02-24 02:59:28,071 INFO L226 Difference]: Without dead ends: 195 [2022-02-24 02:59:28,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 02:59:28,072 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 426 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:28,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 26 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:28,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-02-24 02:59:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 81. [2022-02-24 02:59:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-02-24 02:59:28,090 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2022-02-24 02:59:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:28,091 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-02-24 02:59:28,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-02-24 02:59:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 02:59:28,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:28,091 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:28,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 02:59:28,091 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:28,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1552771669, now seen corresponding path program 30 times [2022-02-24 02:59:28,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:28,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139856307] [2022-02-24 02:59:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:28,094 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:28,094 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:28,455 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:28,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139856307] [2022-02-24 02:59:28,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1139856307] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:28,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:28,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-24 02:59:28,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282720379] [2022-02-24 02:59:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:28,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-24 02:59:28,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-24 02:59:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 02:59:28,456 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:29,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:29,344 INFO L93 Difference]: Finished difference Result 215 states and 246 transitions. [2022-02-24 02:59:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 02:59:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2022-02-24 02:59:29,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:29,364 INFO L225 Difference]: With dead ends: 215 [2022-02-24 02:59:29,364 INFO L226 Difference]: Without dead ends: 201 [2022-02-24 02:59:29,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 02:59:29,365 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 460 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:29,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 31 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-02-24 02:59:29,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 83. [2022-02-24 02:59:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2022-02-24 02:59:29,384 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2022-02-24 02:59:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:29,385 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2022-02-24 02:59:29,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2022-02-24 02:59:29,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-24 02:59:29,385 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:29,385 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:29,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 02:59:29,385 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash 672699853, now seen corresponding path program 31 times [2022-02-24 02:59:29,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:29,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304490293] [2022-02-24 02:59:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:29,388 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:29,388 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:29,744 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:29,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304490293] [2022-02-24 02:59:29,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1304490293] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:29,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:29,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-24 02:59:29,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50113149] [2022-02-24 02:59:29,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:29,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-24 02:59:29,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:29,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-24 02:59:29,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:59:29,746 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:30,687 INFO L93 Difference]: Finished difference Result 221 states and 253 transitions. [2022-02-24 02:59:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 02:59:30,687 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2022-02-24 02:59:30,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:30,688 INFO L225 Difference]: With dead ends: 221 [2022-02-24 02:59:30,688 INFO L226 Difference]: Without dead ends: 207 [2022-02-24 02:59:30,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 02:59:30,689 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 415 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:30,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 36 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:30,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-02-24 02:59:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 85. [2022-02-24 02:59:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-02-24 02:59:30,709 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2022-02-24 02:59:30,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:30,709 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-02-24 02:59:30,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-02-24 02:59:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 02:59:30,710 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:30,710 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:30,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 02:59:30,710 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:30,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:30,710 INFO L85 PathProgramCache]: Analyzing trace with hash 457119087, now seen corresponding path program 32 times [2022-02-24 02:59:30,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:30,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203379228] [2022-02-24 02:59:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:30,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:30,713 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:30,713 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:31,104 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:31,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203379228] [2022-02-24 02:59:31,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [203379228] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:31,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:31,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-24 02:59:31,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088297443] [2022-02-24 02:59:31,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:31,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-24 02:59:31,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-24 02:59:31,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 02:59:31,105 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:32,154 INFO L93 Difference]: Finished difference Result 227 states and 260 transitions. [2022-02-24 02:59:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-24 02:59:32,154 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2022-02-24 02:59:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:32,155 INFO L225 Difference]: With dead ends: 227 [2022-02-24 02:59:32,155 INFO L226 Difference]: Without dead ends: 213 [2022-02-24 02:59:32,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 02:59:32,156 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 538 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:32,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 31 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-02-24 02:59:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 87. [2022-02-24 02:59:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2022-02-24 02:59:32,181 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2022-02-24 02:59:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:32,182 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2022-02-24 02:59:32,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2022-02-24 02:59:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 02:59:32,182 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:32,182 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:32,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 02:59:32,182 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:32,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash -557566831, now seen corresponding path program 33 times [2022-02-24 02:59:32,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:32,183 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556753094] [2022-02-24 02:59:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:32,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:32,185 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:32,186 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:32,578 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:32,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556753094] [2022-02-24 02:59:32,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [556753094] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:32,579 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:32,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-24 02:59:32,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090636715] [2022-02-24 02:59:32,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:32,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-24 02:59:32,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-24 02:59:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 02:59:32,580 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:33,649 INFO L93 Difference]: Finished difference Result 233 states and 267 transitions. [2022-02-24 02:59:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 02:59:33,649 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2022-02-24 02:59:33,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:33,650 INFO L225 Difference]: With dead ends: 233 [2022-02-24 02:59:33,650 INFO L226 Difference]: Without dead ends: 219 [2022-02-24 02:59:33,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 02:59:33,651 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 475 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:33,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 36 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:33,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-02-24 02:59:33,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 89. [2022-02-24 02:59:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-02-24 02:59:33,679 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2022-02-24 02:59:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:33,679 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-02-24 02:59:33,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-02-24 02:59:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 02:59:33,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:33,680 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:33,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 02:59:33,680 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash -713157837, now seen corresponding path program 34 times [2022-02-24 02:59:33,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:33,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429927944] [2022-02-24 02:59:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:33,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:33,683 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:33,683 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:34,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:34,108 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:34,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429927944] [2022-02-24 02:59:34,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [429927944] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:34,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:34,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-24 02:59:34,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418430096] [2022-02-24 02:59:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:34,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-24 02:59:34,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-24 02:59:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 02:59:34,110 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:35,374 INFO L93 Difference]: Finished difference Result 239 states and 274 transitions. [2022-02-24 02:59:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 02:59:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2022-02-24 02:59:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:35,375 INFO L225 Difference]: With dead ends: 239 [2022-02-24 02:59:35,376 INFO L226 Difference]: Without dead ends: 225 [2022-02-24 02:59:35,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 02:59:35,376 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 535 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:35,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 36 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:59:35,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-24 02:59:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 91. [2022-02-24 02:59:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2022-02-24 02:59:35,400 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2022-02-24 02:59:35,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:35,400 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2022-02-24 02:59:35,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2022-02-24 02:59:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-24 02:59:35,401 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:35,401 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:35,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 02:59:35,401 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash 87740757, now seen corresponding path program 35 times [2022-02-24 02:59:35,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:35,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113524644] [2022-02-24 02:59:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:35,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:35,404 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:35,404 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:35,864 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:35,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113524644] [2022-02-24 02:59:35,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1113524644] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:35,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:35,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-24 02:59:35,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142978193] [2022-02-24 02:59:35,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:35,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-24 02:59:35,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-24 02:59:35,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 02:59:35,865 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:37,141 INFO L93 Difference]: Finished difference Result 245 states and 281 transitions. [2022-02-24 02:59:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 02:59:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2022-02-24 02:59:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:37,142 INFO L225 Difference]: With dead ends: 245 [2022-02-24 02:59:37,142 INFO L226 Difference]: Without dead ends: 231 [2022-02-24 02:59:37,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 02:59:37,143 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 459 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:37,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 46 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:59:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-02-24 02:59:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 93. [2022-02-24 02:59:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2022-02-24 02:59:37,168 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2022-02-24 02:59:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:37,168 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2022-02-24 02:59:37,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2022-02-24 02:59:37,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-24 02:59:37,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:37,169 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:37,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 02:59:37,169 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 952143607, now seen corresponding path program 36 times [2022-02-24 02:59:37,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:37,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268113196] [2022-02-24 02:59:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:37,172 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:37,172 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:37,631 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:37,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268113196] [2022-02-24 02:59:37,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268113196] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:37,631 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:37,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-24 02:59:37,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249297433] [2022-02-24 02:59:37,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:37,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-24 02:59:37,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:37,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-24 02:59:37,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 02:59:37,633 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:38,937 INFO L93 Difference]: Finished difference Result 251 states and 288 transitions. [2022-02-24 02:59:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-24 02:59:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2022-02-24 02:59:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:38,938 INFO L225 Difference]: With dead ends: 251 [2022-02-24 02:59:38,938 INFO L226 Difference]: Without dead ends: 237 [2022-02-24 02:59:38,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 02:59:38,939 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 475 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:38,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 61 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-02-24 02:59:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 95. [2022-02-24 02:59:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2022-02-24 02:59:38,970 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2022-02-24 02:59:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:38,970 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2022-02-24 02:59:38,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:38,970 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2022-02-24 02:59:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-02-24 02:59:38,970 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:38,970 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:38,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 02:59:38,971 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:38,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:38,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1580372967, now seen corresponding path program 37 times [2022-02-24 02:59:38,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:38,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141715975] [2022-02-24 02:59:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:38,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:38,974 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:38,974 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:39,475 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:39,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141715975] [2022-02-24 02:59:39,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2141715975] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:39,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:39,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-24 02:59:39,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893250578] [2022-02-24 02:59:39,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:39,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-24 02:59:39,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-24 02:59:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 02:59:39,476 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:40,931 INFO L93 Difference]: Finished difference Result 257 states and 295 transitions. [2022-02-24 02:59:40,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 02:59:40,931 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2022-02-24 02:59:40,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:40,932 INFO L225 Difference]: With dead ends: 257 [2022-02-24 02:59:40,932 INFO L226 Difference]: Without dead ends: 243 [2022-02-24 02:59:40,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 02:59:40,934 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 591 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:40,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 36 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:59:40,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-02-24 02:59:40,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 97. [2022-02-24 02:59:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-02-24 02:59:40,963 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2022-02-24 02:59:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:40,963 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-02-24 02:59:40,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 40 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-02-24 02:59:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-24 02:59:40,964 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:40,964 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:40,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-24 02:59:40,964 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -82343749, now seen corresponding path program 38 times [2022-02-24 02:59:40,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:40,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066111443] [2022-02-24 02:59:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:40,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:40,971 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:40,972 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:41,504 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:41,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066111443] [2022-02-24 02:59:41,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1066111443] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:41,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:41,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-24 02:59:41,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816994391] [2022-02-24 02:59:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:41,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-24 02:59:41,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:41,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-24 02:59:41,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 02:59:41,505 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:43,018 INFO L93 Difference]: Finished difference Result 263 states and 302 transitions. [2022-02-24 02:59:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-24 02:59:43,018 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2022-02-24 02:59:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:43,019 INFO L225 Difference]: With dead ends: 263 [2022-02-24 02:59:43,019 INFO L226 Difference]: Without dead ends: 249 [2022-02-24 02:59:43,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 02:59:43,020 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 625 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:43,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 26 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-24 02:59:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 99. [2022-02-24 02:59:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2022-02-24 02:59:43,050 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2022-02-24 02:59:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:43,050 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2022-02-24 02:59:43,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 41 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2022-02-24 02:59:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-24 02:59:43,050 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:43,050 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:43,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-24 02:59:43,051 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash 709690589, now seen corresponding path program 39 times [2022-02-24 02:59:43,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:43,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816206020] [2022-02-24 02:59:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:43,054 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:43,054 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:43,587 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:43,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816206020] [2022-02-24 02:59:43,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [816206020] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:43,587 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:43,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-24 02:59:43,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739542698] [2022-02-24 02:59:43,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:43,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-24 02:59:43,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-24 02:59:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:59:43,588 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:45,183 INFO L93 Difference]: Finished difference Result 269 states and 309 transitions. [2022-02-24 02:59:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 02:59:45,184 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2022-02-24 02:59:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:45,185 INFO L225 Difference]: With dead ends: 269 [2022-02-24 02:59:45,185 INFO L226 Difference]: Without dead ends: 255 [2022-02-24 02:59:45,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 02:59:45,186 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 605 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:45,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 36 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-02-24 02:59:45,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 101. [2022-02-24 02:59:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2022-02-24 02:59:45,222 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2022-02-24 02:59:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:45,222 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2022-02-24 02:59:45,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2022-02-24 02:59:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-24 02:59:45,223 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:45,223 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:45,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-24 02:59:45,223 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:45,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:45,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1645478015, now seen corresponding path program 40 times [2022-02-24 02:59:45,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:45,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409898820] [2022-02-24 02:59:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:45,226 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:45,226 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:45,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:45,796 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:45,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409898820] [2022-02-24 02:59:45,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1409898820] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:45,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:45,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-24 02:59:45,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968946487] [2022-02-24 02:59:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:45,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-24 02:59:45,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-24 02:59:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 02:59:45,797 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:47,473 INFO L93 Difference]: Finished difference Result 275 states and 316 transitions. [2022-02-24 02:59:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-24 02:59:47,474 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2022-02-24 02:59:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:47,475 INFO L225 Difference]: With dead ends: 275 [2022-02-24 02:59:47,475 INFO L226 Difference]: Without dead ends: 261 [2022-02-24 02:59:47,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 02:59:47,475 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 538 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:47,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 41 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:47,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-02-24 02:59:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 103. [2022-02-24 02:59:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2022-02-24 02:59:47,508 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2022-02-24 02:59:47,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:47,509 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2022-02-24 02:59:47,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2022-02-24 02:59:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-24 02:59:47,509 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:47,509 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:47,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-24 02:59:47,509 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:47,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1005937759, now seen corresponding path program 41 times [2022-02-24 02:59:47,510 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:47,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022742945] [2022-02-24 02:59:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:47,513 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:47,513 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:48,082 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:48,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022742945] [2022-02-24 02:59:48,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2022742945] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:48,082 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:48,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-24 02:59:48,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423858982] [2022-02-24 02:59:48,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:48,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-24 02:59:48,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-24 02:59:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 02:59:48,083 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:49,884 INFO L93 Difference]: Finished difference Result 281 states and 323 transitions. [2022-02-24 02:59:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-24 02:59:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2022-02-24 02:59:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:49,886 INFO L225 Difference]: With dead ends: 281 [2022-02-24 02:59:49,886 INFO L226 Difference]: Without dead ends: 267 [2022-02-24 02:59:49,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 02:59:49,886 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 609 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:49,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 36 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:59:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-02-24 02:59:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 105. [2022-02-24 02:59:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-02-24 02:59:49,923 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2022-02-24 02:59:49,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:49,923 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-02-24 02:59:49,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-02-24 02:59:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-24 02:59:49,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:49,924 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:49,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-24 02:59:49,924 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:49,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2100890045, now seen corresponding path program 42 times [2022-02-24 02:59:49,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:49,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189584306] [2022-02-24 02:59:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:49,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:49,928 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:49,928 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:50,530 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:50,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189584306] [2022-02-24 02:59:50,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1189584306] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:50,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:50,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-24 02:59:50,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650086995] [2022-02-24 02:59:50,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:50,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-24 02:59:50,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:50,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-24 02:59:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 02:59:50,531 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:52,458 INFO L93 Difference]: Finished difference Result 287 states and 330 transitions. [2022-02-24 02:59:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-24 02:59:52,459 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2022-02-24 02:59:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:52,460 INFO L225 Difference]: With dead ends: 287 [2022-02-24 02:59:52,460 INFO L226 Difference]: Without dead ends: 273 [2022-02-24 02:59:52,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 02:59:52,460 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 611 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:52,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 36 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:59:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-02-24 02:59:52,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 107. [2022-02-24 02:59:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2022-02-24 02:59:52,497 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2022-02-24 02:59:52,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:52,497 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2022-02-24 02:59:52,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:52,498 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2022-02-24 02:59:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-24 02:59:52,498 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:52,498 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:52,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-24 02:59:52,498 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2083049371, now seen corresponding path program 43 times [2022-02-24 02:59:52,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:52,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001500457] [2022-02-24 02:59:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:52,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:52,502 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:52,502 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:53,174 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:53,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001500457] [2022-02-24 02:59:53,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1001500457] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:53,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:53,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-24 02:59:53,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207691036] [2022-02-24 02:59:53,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:53,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-24 02:59:53,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-24 02:59:53,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 02:59:53,176 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:55,173 INFO L93 Difference]: Finished difference Result 293 states and 337 transitions. [2022-02-24 02:59:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-24 02:59:55,174 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2022-02-24 02:59:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:55,175 INFO L225 Difference]: With dead ends: 293 [2022-02-24 02:59:55,175 INFO L226 Difference]: Without dead ends: 279 [2022-02-24 02:59:55,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 02:59:55,175 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 779 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:55,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 26 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:59:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-02-24 02:59:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 109. [2022-02-24 02:59:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2022-02-24 02:59:55,215 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2022-02-24 02:59:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:55,215 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2022-02-24 02:59:55,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2022-02-24 02:59:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-24 02:59:55,215 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:55,215 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:55,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-24 02:59:55,216 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:55,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2118030841, now seen corresponding path program 44 times [2022-02-24 02:59:55,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:55,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486907835] [2022-02-24 02:59:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:55,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:55,219 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:55,219 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:55,876 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:55,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486907835] [2022-02-24 02:59:55,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1486907835] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:55,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:55,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-24 02:59:55,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337309077] [2022-02-24 02:59:55,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:55,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-24 02:59:55,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:55,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-24 02:59:55,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 02:59:55,878 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:57,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:57,991 INFO L93 Difference]: Finished difference Result 299 states and 344 transitions. [2022-02-24 02:59:57,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-24 02:59:57,992 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2022-02-24 02:59:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:57,993 INFO L225 Difference]: With dead ends: 299 [2022-02-24 02:59:57,993 INFO L226 Difference]: Without dead ends: 285 [2022-02-24 02:59:57,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 02:59:57,993 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 631 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:57,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 51 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:59:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-02-24 02:59:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 111. [2022-02-24 02:59:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-02-24 02:59:58,033 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2022-02-24 02:59:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:58,033 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-02-24 02:59:58,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-02-24 02:59:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-24 02:59:58,034 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:58,034 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:58,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-24 02:59:58,034 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1375485143, now seen corresponding path program 45 times [2022-02-24 02:59:58,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:58,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983799006] [2022-02-24 02:59:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:58,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:58,037 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:58,037 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:58,706 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:58,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983799006] [2022-02-24 02:59:58,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [983799006] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:58,706 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:58,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-24 02:59:58,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890037733] [2022-02-24 02:59:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:58,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-24 02:59:58,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-24 02:59:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 02:59:58,707 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 48 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:00,925 INFO L93 Difference]: Finished difference Result 305 states and 351 transitions. [2022-02-24 03:00:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-24 03:00:00,926 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 48 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2022-02-24 03:00:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:00,926 INFO L225 Difference]: With dead ends: 305 [2022-02-24 03:00:00,927 INFO L226 Difference]: Without dead ends: 291 [2022-02-24 03:00:00,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 03:00:00,927 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 800 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:00,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 31 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:00,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-02-24 03:00:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 113. [2022-02-24 03:00:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-02-24 03:00:00,973 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2022-02-24 03:00:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:00,973 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-02-24 03:00:00,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 48 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-02-24 03:00:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-24 03:00:00,974 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:00,974 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:00,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-24 03:00:00,974 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:00,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:00,974 INFO L85 PathProgramCache]: Analyzing trace with hash -753640501, now seen corresponding path program 46 times [2022-02-24 03:00:00,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:00,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882701767] [2022-02-24 03:00:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:00,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:00,978 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:00,978 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:01,667 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:01,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882701767] [2022-02-24 03:00:01,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1882701767] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:01,668 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:01,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-24 03:00:01,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977683556] [2022-02-24 03:00:01,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:01,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-24 03:00:01,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:01,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-24 03:00:01,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 03:00:01,669 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:04,027 INFO L93 Difference]: Finished difference Result 311 states and 358 transitions. [2022-02-24 03:00:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-24 03:00:04,027 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2022-02-24 03:00:04,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:04,028 INFO L225 Difference]: With dead ends: 311 [2022-02-24 03:00:04,028 INFO L226 Difference]: Without dead ends: 297 [2022-02-24 03:00:04,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 03:00:04,029 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 735 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:04,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 36 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:04,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-24 03:00:04,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 115. [2022-02-24 03:00:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2022-02-24 03:00:04,073 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2022-02-24 03:00:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:04,074 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2022-02-24 03:00:04,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2022-02-24 03:00:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-24 03:00:04,074 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:04,074 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:04,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-24 03:00:04,075 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:04,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash -161393683, now seen corresponding path program 47 times [2022-02-24 03:00:04,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:04,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648147374] [2022-02-24 03:00:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:04,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:04,078 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:04,078 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:04,796 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:04,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648147374] [2022-02-24 03:00:04,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1648147374] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:04,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:04,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-24 03:00:04,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444051759] [2022-02-24 03:00:04,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:04,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-24 03:00:04,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-24 03:00:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 03:00:04,798 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 50 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:07,247 INFO L93 Difference]: Finished difference Result 317 states and 365 transitions. [2022-02-24 03:00:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-24 03:00:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 50 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2022-02-24 03:00:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:07,248 INFO L225 Difference]: With dead ends: 317 [2022-02-24 03:00:07,248 INFO L226 Difference]: Without dead ends: 303 [2022-02-24 03:00:07,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 03:00:07,249 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 664 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:07,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 36 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-02-24 03:00:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 117. [2022-02-24 03:00:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2022-02-24 03:00:07,296 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2022-02-24 03:00:07,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:07,297 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2022-02-24 03:00:07,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 50 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:07,297 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2022-02-24 03:00:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-24 03:00:07,297 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:07,297 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:07,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-24 03:00:07,297 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:07,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2052115343, now seen corresponding path program 48 times [2022-02-24 03:00:07,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:07,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511203996] [2022-02-24 03:00:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:07,301 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:07,301 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:08,052 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:08,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511203996] [2022-02-24 03:00:08,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [511203996] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:08,052 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:08,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-24 03:00:08,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394641287] [2022-02-24 03:00:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:08,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-24 03:00:08,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-24 03:00:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 03:00:08,054 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:10,878 INFO L93 Difference]: Finished difference Result 323 states and 372 transitions. [2022-02-24 03:00:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-24 03:00:10,878 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2022-02-24 03:00:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:10,879 INFO L225 Difference]: With dead ends: 323 [2022-02-24 03:00:10,879 INFO L226 Difference]: Without dead ends: 309 [2022-02-24 03:00:10,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 03:00:10,880 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 760 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:10,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 46 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:10,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-02-24 03:00:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 119. [2022-02-24 03:00:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2022-02-24 03:00:10,927 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2022-02-24 03:00:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:10,928 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2022-02-24 03:00:10,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2022-02-24 03:00:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-24 03:00:10,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:10,928 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:10,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-24 03:00:10,929 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:10,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1069489487, now seen corresponding path program 49 times [2022-02-24 03:00:10,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:10,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512148884] [2022-02-24 03:00:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:10,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:10,932 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:10,932 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:11,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:11,763 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:11,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512148884] [2022-02-24 03:00:11,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [512148884] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:11,763 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:11,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-24 03:00:11,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424830643] [2022-02-24 03:00:11,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:11,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-24 03:00:11,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:11,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-24 03:00:11,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 03:00:11,764 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:14,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:14,516 INFO L93 Difference]: Finished difference Result 329 states and 379 transitions. [2022-02-24 03:00:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-24 03:00:14,516 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2022-02-24 03:00:14,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:14,517 INFO L225 Difference]: With dead ends: 329 [2022-02-24 03:00:14,517 INFO L226 Difference]: Without dead ends: 315 [2022-02-24 03:00:14,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 03:00:14,518 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 727 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:14,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 41 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:14,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-02-24 03:00:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 121. [2022-02-24 03:00:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-02-24 03:00:14,573 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2022-02-24 03:00:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:14,574 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-02-24 03:00:14,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-02-24 03:00:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-24 03:00:14,574 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:14,574 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:14,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-24 03:00:14,574 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:14,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1250408787, now seen corresponding path program 50 times [2022-02-24 03:00:14,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:14,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450097621] [2022-02-24 03:00:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:14,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:14,579 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:14,579 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:15,457 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:15,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450097621] [2022-02-24 03:00:15,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [450097621] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:15,457 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:15,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-24 03:00:15,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949905769] [2022-02-24 03:00:15,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:15,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-24 03:00:15,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-24 03:00:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 03:00:15,459 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:18,412 INFO L93 Difference]: Finished difference Result 335 states and 386 transitions. [2022-02-24 03:00:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-24 03:00:18,412 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2022-02-24 03:00:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:18,413 INFO L225 Difference]: With dead ends: 335 [2022-02-24 03:00:18,413 INFO L226 Difference]: Without dead ends: 321 [2022-02-24 03:00:18,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 03:00:18,414 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 674 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:18,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 61 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-02-24 03:00:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 123. [2022-02-24 03:00:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2022-02-24 03:00:18,469 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2022-02-24 03:00:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:18,469 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2022-02-24 03:00:18,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2022-02-24 03:00:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-02-24 03:00:18,470 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:18,470 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:18,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-24 03:00:18,470 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:18,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1584623477, now seen corresponding path program 51 times [2022-02-24 03:00:18,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:18,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597915012] [2022-02-24 03:00:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:18,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:18,474 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:18,474 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:19,392 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:19,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597915012] [2022-02-24 03:00:19,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1597915012] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:19,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:19,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-24 03:00:19,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116774089] [2022-02-24 03:00:19,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:19,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-24 03:00:19,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:19,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-24 03:00:19,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 03:00:19,394 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:22,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:22,557 INFO L93 Difference]: Finished difference Result 341 states and 393 transitions. [2022-02-24 03:00:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-24 03:00:22,558 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2022-02-24 03:00:22,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:22,559 INFO L225 Difference]: With dead ends: 341 [2022-02-24 03:00:22,559 INFO L226 Difference]: Without dead ends: 327 [2022-02-24 03:00:22,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 03:00:22,560 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1023 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:22,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 21 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-02-24 03:00:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 125. [2022-02-24 03:00:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2022-02-24 03:00:22,612 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2022-02-24 03:00:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:22,613 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2022-02-24 03:00:22,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:22,613 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2022-02-24 03:00:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-24 03:00:22,613 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:22,613 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:22,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-24 03:00:22,613 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:22,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:22,614 INFO L85 PathProgramCache]: Analyzing trace with hash 642393367, now seen corresponding path program 52 times [2022-02-24 03:00:22,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:22,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391538300] [2022-02-24 03:00:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:22,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:22,617 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:22,617 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:23,519 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:23,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391538300] [2022-02-24 03:00:23,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1391538300] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:23,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:23,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-24 03:00:23,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343792375] [2022-02-24 03:00:23,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:23,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-24 03:00:23,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-24 03:00:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 03:00:23,520 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:26,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:26,750 INFO L93 Difference]: Finished difference Result 347 states and 400 transitions. [2022-02-24 03:00:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-24 03:00:26,751 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2022-02-24 03:00:26,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:26,752 INFO L225 Difference]: With dead ends: 347 [2022-02-24 03:00:26,752 INFO L226 Difference]: Without dead ends: 333 [2022-02-24 03:00:26,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-02-24 03:00:26,753 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 962 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:26,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 31 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-02-24 03:00:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 127. [2022-02-24 03:00:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2022-02-24 03:00:26,811 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2022-02-24 03:00:26,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:26,811 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2022-02-24 03:00:26,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2022-02-24 03:00:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-24 03:00:26,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:26,812 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:26,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-24 03:00:26,812 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:26,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1397357113, now seen corresponding path program 53 times [2022-02-24 03:00:26,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:26,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863223788] [2022-02-24 03:00:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:26,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:26,816 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:26,816 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:27,744 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:27,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863223788] [2022-02-24 03:00:27,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [863223788] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:27,745 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:27,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-24 03:00:27,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37295382] [2022-02-24 03:00:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:27,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-24 03:00:27,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:27,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-24 03:00:27,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 03:00:27,746 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:31,156 INFO L93 Difference]: Finished difference Result 353 states and 407 transitions. [2022-02-24 03:00:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-24 03:00:31,156 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2022-02-24 03:00:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:31,157 INFO L225 Difference]: With dead ends: 353 [2022-02-24 03:00:31,157 INFO L226 Difference]: Without dead ends: 339 [2022-02-24 03:00:31,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-02-24 03:00:31,158 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 702 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:31,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 51 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-02-24 03:00:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 129. [2022-02-24 03:00:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2022-02-24 03:00:31,217 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2022-02-24 03:00:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:31,218 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2022-02-24 03:00:31,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2022-02-24 03:00:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-24 03:00:31,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:31,218 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:31,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-24 03:00:31,218 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1068043995, now seen corresponding path program 54 times [2022-02-24 03:00:31,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:31,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604977919] [2022-02-24 03:00:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:31,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:31,222 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:31,222 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:32,217 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:32,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604977919] [2022-02-24 03:00:32,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1604977919] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:32,217 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:32,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-24 03:00:32,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117488236] [2022-02-24 03:00:32,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:32,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-24 03:00:32,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-24 03:00:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 03:00:32,218 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:35,878 INFO L93 Difference]: Finished difference Result 359 states and 414 transitions. [2022-02-24 03:00:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-24 03:00:35,879 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2022-02-24 03:00:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:35,880 INFO L225 Difference]: With dead ends: 359 [2022-02-24 03:00:35,880 INFO L226 Difference]: Without dead ends: 345 [2022-02-24 03:00:35,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-02-24 03:00:35,889 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 731 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:35,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 46 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-02-24 03:00:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 131. [2022-02-24 03:00:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2022-02-24 03:00:35,952 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2022-02-24 03:00:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:35,952 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2022-02-24 03:00:35,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2022-02-24 03:00:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-24 03:00:35,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:35,954 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:35,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-24 03:00:35,954 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1869249795, now seen corresponding path program 55 times [2022-02-24 03:00:35,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:35,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743366230] [2022-02-24 03:00:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:35,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:35,960 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:35,960 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:36,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:36,956 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:36,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743366230] [2022-02-24 03:00:36,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1743366230] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:36,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:36,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-24 03:00:36,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664671895] [2022-02-24 03:00:36,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:36,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-24 03:00:36,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-24 03:00:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 03:00:36,958 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 58 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:40,774 INFO L93 Difference]: Finished difference Result 365 states and 421 transitions. [2022-02-24 03:00:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-24 03:00:40,774 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 58 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2022-02-24 03:00:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:40,775 INFO L225 Difference]: With dead ends: 365 [2022-02-24 03:00:40,775 INFO L226 Difference]: Without dead ends: 351 [2022-02-24 03:00:40,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-02-24 03:00:40,776 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 861 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:40,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 36 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:00:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-02-24 03:00:40,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 133. [2022-02-24 03:00:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2022-02-24 03:00:40,850 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2022-02-24 03:00:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:40,851 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2022-02-24 03:00:40,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 58 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2022-02-24 03:00:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-24 03:00:40,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:40,851 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:40,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-24 03:00:40,852 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1479898783, now seen corresponding path program 56 times [2022-02-24 03:00:40,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:40,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035312417] [2022-02-24 03:00:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:40,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:40,855 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:40,855 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:41,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:41,879 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:41,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035312417] [2022-02-24 03:00:41,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1035312417] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:41,879 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:41,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-24 03:00:41,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747008663] [2022-02-24 03:00:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:41,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-24 03:00:41,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:41,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-24 03:00:41,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 03:00:41,881 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 59 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:45,859 INFO L93 Difference]: Finished difference Result 371 states and 428 transitions. [2022-02-24 03:00:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-24 03:00:45,860 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 59 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132 [2022-02-24 03:00:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:45,861 INFO L225 Difference]: With dead ends: 371 [2022-02-24 03:00:45,861 INFO L226 Difference]: Without dead ends: 357 [2022-02-24 03:00:45,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-02-24 03:00:45,862 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 862 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:45,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 51 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:45,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-02-24 03:00:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 135. [2022-02-24 03:00:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2022-02-24 03:00:45,929 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2022-02-24 03:00:45,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:45,929 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2022-02-24 03:00:45,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 59 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2022-02-24 03:00:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-02-24 03:00:45,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:45,930 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:45,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-24 03:00:45,930 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1213789759, now seen corresponding path program 57 times [2022-02-24 03:00:45,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:45,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750337080] [2022-02-24 03:00:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:45,934 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:45,934 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:46,982 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:46,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750337080] [2022-02-24 03:00:46,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1750337080] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:46,983 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:46,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-24 03:00:46,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638249977] [2022-02-24 03:00:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:46,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-24 03:00:46,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-24 03:00:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 03:00:46,984 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:51,190 INFO L93 Difference]: Finished difference Result 377 states and 435 transitions. [2022-02-24 03:00:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-24 03:00:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2022-02-24 03:00:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:51,192 INFO L225 Difference]: With dead ends: 377 [2022-02-24 03:00:51,192 INFO L226 Difference]: Without dead ends: 363 [2022-02-24 03:00:51,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-02-24 03:00:51,193 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 888 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:51,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 41 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:00:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-02-24 03:00:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 137. [2022-02-24 03:00:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2022-02-24 03:00:51,261 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2022-02-24 03:00:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:51,261 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2022-02-24 03:00:51,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2022-02-24 03:00:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-24 03:00:51,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:51,262 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:51,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-24 03:00:51,262 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:51,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash 16800867, now seen corresponding path program 58 times [2022-02-24 03:00:51,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:51,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441616936] [2022-02-24 03:00:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:51,265 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:51,266 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:52,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:52,350 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:52,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441616936] [2022-02-24 03:00:52,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1441616936] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:52,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:52,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-24 03:00:52,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892545937] [2022-02-24 03:00:52,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:52,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-24 03:00:52,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:52,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-24 03:00:52,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 03:00:52,352 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 61 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:56,740 INFO L93 Difference]: Finished difference Result 383 states and 442 transitions. [2022-02-24 03:00:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-24 03:00:56,740 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 61 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2022-02-24 03:00:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:56,741 INFO L225 Difference]: With dead ends: 383 [2022-02-24 03:00:56,741 INFO L226 Difference]: Without dead ends: 369 [2022-02-24 03:00:56,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-02-24 03:00:56,742 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 901 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:56,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 36 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:00:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-02-24 03:00:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 139. [2022-02-24 03:00:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2022-02-24 03:00:56,812 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2022-02-24 03:00:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:56,812 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2022-02-24 03:00:56,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 61 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2022-02-24 03:00:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-02-24 03:00:56,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:56,812 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:56,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-24 03:00:56,813 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:56,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:56,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1498386053, now seen corresponding path program 59 times [2022-02-24 03:00:56,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:56,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121061343] [2022-02-24 03:00:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:56,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:56,816 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:56,816 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:57,904 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:57,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121061343] [2022-02-24 03:00:57,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [121061343] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:57,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:57,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-24 03:00:57,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866971287] [2022-02-24 03:00:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:57,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-24 03:00:57,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-24 03:00:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 03:00:57,905 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 62 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:02,455 INFO L93 Difference]: Finished difference Result 389 states and 449 transitions. [2022-02-24 03:01:02,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-24 03:01:02,455 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 62 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2022-02-24 03:01:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:02,456 INFO L225 Difference]: With dead ends: 389 [2022-02-24 03:01:02,456 INFO L226 Difference]: Without dead ends: 375 [2022-02-24 03:01:02,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-02-24 03:01:02,457 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 926 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:02,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 31 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:01:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-02-24 03:01:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 141. [2022-02-24 03:01:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 136 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2022-02-24 03:01:02,540 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2022-02-24 03:01:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:02,540 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2022-02-24 03:01:02,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 62 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:02,540 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2022-02-24 03:01:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-02-24 03:01:02,541 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:02,541 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:02,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-24 03:01:02,541 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash -627392473, now seen corresponding path program 60 times [2022-02-24 03:01:02,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:02,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704704485] [2022-02-24 03:01:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:02,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:02,545 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:02,545 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:03,690 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:03,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704704485] [2022-02-24 03:01:03,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [704704485] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:03,690 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:03,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-24 03:01:03,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358974904] [2022-02-24 03:01:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:03,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-24 03:01:03,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-24 03:01:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 03:01:03,692 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 64 states, 64 states have (on average 2.0625) internal successors, (132), 63 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:08,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:08,534 INFO L93 Difference]: Finished difference Result 395 states and 456 transitions. [2022-02-24 03:01:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-24 03:01:08,535 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 63 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 140 [2022-02-24 03:01:08,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:08,536 INFO L225 Difference]: With dead ends: 395 [2022-02-24 03:01:08,536 INFO L226 Difference]: Without dead ends: 381 [2022-02-24 03:01:08,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2022-02-24 03:01:08,537 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:08,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 26 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:01:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-02-24 03:01:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 143. [2022-02-24 03:01:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2022-02-24 03:01:08,616 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2022-02-24 03:01:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:08,616 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2022-02-24 03:01:08,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 63 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2022-02-24 03:01:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-02-24 03:01:08,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:08,617 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:08,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-24 03:01:08,617 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash 903876937, now seen corresponding path program 61 times [2022-02-24 03:01:08,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:08,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641921634] [2022-02-24 03:01:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:08,621 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:08,621 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:09,807 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:09,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641921634] [2022-02-24 03:01:09,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641921634] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:09,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:09,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-24 03:01:09,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747883498] [2022-02-24 03:01:09,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:09,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-24 03:01:09,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:09,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-24 03:01:09,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 03:01:09,808 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 64 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:14,815 INFO L93 Difference]: Finished difference Result 401 states and 463 transitions. [2022-02-24 03:01:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-24 03:01:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 64 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2022-02-24 03:01:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:14,817 INFO L225 Difference]: With dead ends: 401 [2022-02-24 03:01:14,817 INFO L226 Difference]: Without dead ends: 387 [2022-02-24 03:01:14,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2022-02-24 03:01:14,818 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1029 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:14,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 41 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:01:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-02-24 03:01:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 145. [2022-02-24 03:01:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 140 states have internal predecessors, (142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2022-02-24 03:01:14,898 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2022-02-24 03:01:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:14,898 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2022-02-24 03:01:14,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 64 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2022-02-24 03:01:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-02-24 03:01:14,899 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:14,899 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:14,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-24 03:01:14,899 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash -720002581, now seen corresponding path program 62 times [2022-02-24 03:01:14,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:14,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844361714] [2022-02-24 03:01:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:14,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:14,904 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:14,904 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:16,096 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:16,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844361714] [2022-02-24 03:01:16,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [844361714] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:16,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:16,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-24 03:01:16,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142088760] [2022-02-24 03:01:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:16,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-24 03:01:16,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-24 03:01:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 03:01:16,098 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 65 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:21,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:21,395 INFO L93 Difference]: Finished difference Result 407 states and 470 transitions. [2022-02-24 03:01:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-24 03:01:21,395 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 65 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2022-02-24 03:01:21,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:21,396 INFO L225 Difference]: With dead ends: 407 [2022-02-24 03:01:21,396 INFO L226 Difference]: Without dead ends: 393 [2022-02-24 03:01:21,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2022-02-24 03:01:21,397 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1025 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:21,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 41 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:01:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-02-24 03:01:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 147. [2022-02-24 03:01:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2022-02-24 03:01:21,480 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2022-02-24 03:01:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:21,480 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2022-02-24 03:01:21,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 65 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2022-02-24 03:01:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-24 03:01:21,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:21,481 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:21,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-24 03:01:21,481 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:21,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2099876365, now seen corresponding path program 63 times [2022-02-24 03:01:21,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:21,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935518598] [2022-02-24 03:01:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:21,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:21,485 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:21,485 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:22,718 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:22,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935518598] [2022-02-24 03:01:22,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1935518598] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:22,718 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:22,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-24 03:01:22,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080946131] [2022-02-24 03:01:22,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:22,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-24 03:01:22,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:22,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-24 03:01:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 03:01:22,719 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 66 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:28,238 INFO L93 Difference]: Finished difference Result 413 states and 477 transitions. [2022-02-24 03:01:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-24 03:01:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 66 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 146 [2022-02-24 03:01:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:28,239 INFO L225 Difference]: With dead ends: 413 [2022-02-24 03:01:28,239 INFO L226 Difference]: Without dead ends: 399 [2022-02-24 03:01:28,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2022-02-24 03:01:28,240 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1190 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:28,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 41 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:01:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-24 03:01:28,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 149. [2022-02-24 03:01:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 144 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2022-02-24 03:01:28,326 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2022-02-24 03:01:28,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:28,326 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2022-02-24 03:01:28,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 66 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2022-02-24 03:01:28,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-24 03:01:28,327 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:28,327 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:28,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-24 03:01:28,327 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1879179695, now seen corresponding path program 64 times [2022-02-24 03:01:28,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:28,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322511706] [2022-02-24 03:01:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:28,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:28,332 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:28,332 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:29,624 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:29,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322511706] [2022-02-24 03:01:29,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1322511706] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:29,624 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:29,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-24 03:01:29,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425303782] [2022-02-24 03:01:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:29,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-24 03:01:29,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:29,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-24 03:01:29,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 03:01:29,626 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 67 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:35,508 INFO L93 Difference]: Finished difference Result 419 states and 484 transitions. [2022-02-24 03:01:35,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-24 03:01:35,508 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 67 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2022-02-24 03:01:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:35,509 INFO L225 Difference]: With dead ends: 419 [2022-02-24 03:01:35,509 INFO L226 Difference]: Without dead ends: 405 [2022-02-24 03:01:35,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2022-02-24 03:01:35,511 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1158 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:35,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 36 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:01:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-02-24 03:01:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 151. [2022-02-24 03:01:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2022-02-24 03:01:35,599 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2022-02-24 03:01:35,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:35,600 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2022-02-24 03:01:35,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 67 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2022-02-24 03:01:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-02-24 03:01:35,600 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:35,600 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:35,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-24 03:01:35,601 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash 243077329, now seen corresponding path program 65 times [2022-02-24 03:01:35,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:35,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577042212] [2022-02-24 03:01:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:35,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:35,605 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:35,605 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:36,941 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:36,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577042212] [2022-02-24 03:01:36,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [577042212] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:36,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:36,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-24 03:01:36,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351965674] [2022-02-24 03:01:36,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:36,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-24 03:01:36,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-24 03:01:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 03:01:36,943 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 68 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:42,970 INFO L93 Difference]: Finished difference Result 425 states and 491 transitions. [2022-02-24 03:01:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-24 03:01:42,974 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 68 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2022-02-24 03:01:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:42,975 INFO L225 Difference]: With dead ends: 425 [2022-02-24 03:01:42,975 INFO L226 Difference]: Without dead ends: 411 [2022-02-24 03:01:42,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2022-02-24 03:01:42,977 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 967 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:42,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 36 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:01:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-02-24 03:01:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 153. [2022-02-24 03:01:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 148 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2022-02-24 03:01:43,068 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2022-02-24 03:01:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:43,068 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2022-02-24 03:01:43,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 68 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2022-02-24 03:01:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-02-24 03:01:43,069 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:43,069 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:43,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-24 03:01:43,069 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:43,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:43,069 INFO L85 PathProgramCache]: Analyzing trace with hash -93266061, now seen corresponding path program 66 times [2022-02-24 03:01:43,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:43,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629148235] [2022-02-24 03:01:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:43,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:43,073 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:43,074 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:44,400 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:44,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629148235] [2022-02-24 03:01:44,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1629148235] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:44,401 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:44,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-24 03:01:44,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25436862] [2022-02-24 03:01:44,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:44,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-24 03:01:44,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:44,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-24 03:01:44,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 03:01:44,402 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 69 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:50,741 INFO L93 Difference]: Finished difference Result 431 states and 498 transitions. [2022-02-24 03:01:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-24 03:01:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 69 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 152 [2022-02-24 03:01:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:50,742 INFO L225 Difference]: With dead ends: 431 [2022-02-24 03:01:50,742 INFO L226 Difference]: Without dead ends: 417 [2022-02-24 03:01:50,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2022-02-24 03:01:50,743 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1142 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:50,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 36 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:01:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-24 03:01:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 155. [2022-02-24 03:01:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2022-02-24 03:01:50,837 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2022-02-24 03:01:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:50,838 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2022-02-24 03:01:50,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 69 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2022-02-24 03:01:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-02-24 03:01:50,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:50,838 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:50,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-24 03:01:50,839 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:50,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1196716651, now seen corresponding path program 67 times [2022-02-24 03:01:50,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:50,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274447207] [2022-02-24 03:01:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:50,843 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:50,843 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:52,236 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:52,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274447207] [2022-02-24 03:01:52,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [274447207] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:52,236 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:52,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-24 03:01:52,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920435675] [2022-02-24 03:01:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:52,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-24 03:01:52,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-24 03:01:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 03:01:52,237 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 70 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:58,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:58,860 INFO L93 Difference]: Finished difference Result 437 states and 505 transitions. [2022-02-24 03:01:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-24 03:01:58,860 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 70 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 154 [2022-02-24 03:01:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:58,861 INFO L225 Difference]: With dead ends: 437 [2022-02-24 03:01:58,861 INFO L226 Difference]: Without dead ends: 423 [2022-02-24 03:01:58,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-02-24 03:01:58,862 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1208 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:58,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 46 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:01:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-02-24 03:01:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 157. [2022-02-24 03:01:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2022-02-24 03:01:58,960 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2022-02-24 03:01:58,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:58,960 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2022-02-24 03:01:58,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 70 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2022-02-24 03:01:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-02-24 03:01:58,960 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:58,960 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:58,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-24 03:01:58,961 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:58,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash -755811529, now seen corresponding path program 68 times [2022-02-24 03:01:58,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:58,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669308079] [2022-02-24 03:01:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:58,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:58,965 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:58,965 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:00,366 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:00,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669308079] [2022-02-24 03:02:00,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1669308079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:00,367 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:00,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-24 03:02:00,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892800092] [2022-02-24 03:02:00,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:00,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-24 03:02:00,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:00,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-24 03:02:00,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 03:02:00,369 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 71 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:07,235 INFO L93 Difference]: Finished difference Result 443 states and 512 transitions. [2022-02-24 03:02:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-24 03:02:07,235 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 71 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 156 [2022-02-24 03:02:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:07,236 INFO L225 Difference]: With dead ends: 443 [2022-02-24 03:02:07,236 INFO L226 Difference]: Without dead ends: 429 [2022-02-24 03:02:07,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2022-02-24 03:02:07,237 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1154 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:07,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 41 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:02:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-24 03:02:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 159. [2022-02-24 03:02:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2022-02-24 03:02:07,337 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2022-02-24 03:02:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:07,337 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2022-02-24 03:02:07,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 71 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2022-02-24 03:02:07,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-02-24 03:02:07,338 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:07,338 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:07,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-24 03:02:07,338 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2047215705, now seen corresponding path program 69 times [2022-02-24 03:02:07,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:07,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69666396] [2022-02-24 03:02:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:07,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:07,343 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:07,343 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:08,782 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:08,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69666396] [2022-02-24 03:02:08,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [69666396] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:08,782 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:08,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-24 03:02:08,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208376268] [2022-02-24 03:02:08,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:08,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-24 03:02:08,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-24 03:02:08,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 03:02:08,784 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 72 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:15,954 INFO L93 Difference]: Finished difference Result 449 states and 519 transitions. [2022-02-24 03:02:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-24 03:02:15,954 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 72 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 158 [2022-02-24 03:02:15,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:15,956 INFO L225 Difference]: With dead ends: 449 [2022-02-24 03:02:15,956 INFO L226 Difference]: Without dead ends: 435 [2022-02-24 03:02:15,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2022-02-24 03:02:15,957 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1122 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:15,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1122 Valid, 41 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:02:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-02-24 03:02:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 161. [2022-02-24 03:02:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-02-24 03:02:16,062 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2022-02-24 03:02:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:16,063 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-02-24 03:02:16,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 72 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-02-24 03:02:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-02-24 03:02:16,063 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:16,063 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:16,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-24 03:02:16,064 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1483074309, now seen corresponding path program 70 times [2022-02-24 03:02:16,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:16,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478217848] [2022-02-24 03:02:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:16,068 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:16,068 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:17,565 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:17,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478217848] [2022-02-24 03:02:17,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1478217848] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:17,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:17,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-24 03:02:17,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787089746] [2022-02-24 03:02:17,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:17,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-24 03:02:17,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-24 03:02:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 03:02:17,573 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 73 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:25,169 INFO L93 Difference]: Finished difference Result 455 states and 526 transitions. [2022-02-24 03:02:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-24 03:02:25,169 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 73 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 160 [2022-02-24 03:02:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:25,170 INFO L225 Difference]: With dead ends: 455 [2022-02-24 03:02:25,171 INFO L226 Difference]: Without dead ends: 441 [2022-02-24 03:02:25,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2022-02-24 03:02:25,172 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1052 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:25,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 56 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 03:02:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-02-24 03:02:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 163. [2022-02-24 03:02:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2022-02-24 03:02:25,280 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2022-02-24 03:02:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:25,280 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2022-02-24 03:02:25,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 73 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2022-02-24 03:02:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-02-24 03:02:25,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:25,281 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:25,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-24 03:02:25,281 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:25,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1067613923, now seen corresponding path program 71 times [2022-02-24 03:02:25,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:25,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653080035] [2022-02-24 03:02:25,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:25,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:25,285 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:25,285 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:26,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:26,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:26,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653080035] [2022-02-24 03:02:26,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1653080035] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:26,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:26,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-24 03:02:26,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219126110] [2022-02-24 03:02:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:26,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-24 03:02:26,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-24 03:02:26,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 03:02:26,812 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 74 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:34,688 INFO L93 Difference]: Finished difference Result 461 states and 533 transitions. [2022-02-24 03:02:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-24 03:02:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 74 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162 [2022-02-24 03:02:34,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:34,690 INFO L225 Difference]: With dead ends: 461 [2022-02-24 03:02:34,690 INFO L226 Difference]: Without dead ends: 447 [2022-02-24 03:02:34,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2022-02-24 03:02:34,691 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1379 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:34,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 46 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:02:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-02-24 03:02:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 165. [2022-02-24 03:02:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.0125) internal successors, (162), 160 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2022-02-24 03:02:34,805 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2022-02-24 03:02:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:34,805 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2022-02-24 03:02:34,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 74 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2022-02-24 03:02:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-02-24 03:02:34,805 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:34,806 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:34,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-24 03:02:34,806 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:34,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1242141505, now seen corresponding path program 72 times [2022-02-24 03:02:34,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:34,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960456327] [2022-02-24 03:02:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:34,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:34,810 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:34,810 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:36,380 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:36,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960456327] [2022-02-24 03:02:36,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [960456327] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:36,380 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:36,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-24 03:02:36,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357616795] [2022-02-24 03:02:36,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:36,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-24 03:02:36,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:36,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-24 03:02:36,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 03:02:36,382 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 75 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:44,543 INFO L93 Difference]: Finished difference Result 467 states and 540 transitions. [2022-02-24 03:02:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-24 03:02:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 75 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 164 [2022-02-24 03:02:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:44,545 INFO L225 Difference]: With dead ends: 467 [2022-02-24 03:02:44,545 INFO L226 Difference]: Without dead ends: 453 [2022-02-24 03:02:44,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2022-02-24 03:02:44,546 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1335 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:44,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 31 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:02:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-02-24 03:02:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 167. [2022-02-24 03:02:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:44,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2022-02-24 03:02:44,661 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2022-02-24 03:02:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:44,661 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2022-02-24 03:02:44,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 75 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2022-02-24 03:02:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-02-24 03:02:44,662 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:44,662 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:44,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-24 03:02:44,662 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:44,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1459423263, now seen corresponding path program 73 times [2022-02-24 03:02:44,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:44,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824275253] [2022-02-24 03:02:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:44,667 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:44,667 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:46,261 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:46,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824275253] [2022-02-24 03:02:46,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [824275253] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:46,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:46,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-24 03:02:46,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106077560] [2022-02-24 03:02:46,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:46,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-24 03:02:46,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-24 03:02:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 03:02:46,263 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 76 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:54,863 INFO L93 Difference]: Finished difference Result 473 states and 547 transitions. [2022-02-24 03:02:54,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-24 03:02:54,863 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 76 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166 [2022-02-24 03:02:54,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:54,864 INFO L225 Difference]: With dead ends: 473 [2022-02-24 03:02:54,864 INFO L226 Difference]: Without dead ends: 459 [2022-02-24 03:02:54,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2022-02-24 03:02:54,865 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1265 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:54,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1265 Valid, 26 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:02:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-02-24 03:02:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 169. [2022-02-24 03:02:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 1.0121951219512195) internal successors, (166), 164 states have internal predecessors, (166), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2022-02-24 03:02:54,986 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2022-02-24 03:02:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:54,986 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2022-02-24 03:02:54,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 76 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2022-02-24 03:02:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-24 03:02:54,987 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:54,987 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:54,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-24 03:02:54,987 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash 186204803, now seen corresponding path program 74 times [2022-02-24 03:02:54,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:54,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818982586] [2022-02-24 03:02:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:54,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:54,992 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:54,992 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:56,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:56,619 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:56,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818982586] [2022-02-24 03:02:56,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [818982586] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:56,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:56,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-24 03:02:56,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259358608] [2022-02-24 03:02:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:56,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-24 03:02:56,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-24 03:02:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 03:02:56,621 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 77 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:05,717 INFO L93 Difference]: Finished difference Result 479 states and 554 transitions. [2022-02-24 03:03:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-24 03:03:05,717 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 77 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 168 [2022-02-24 03:03:05,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:05,719 INFO L225 Difference]: With dead ends: 479 [2022-02-24 03:03:05,719 INFO L226 Difference]: Without dead ends: 465 [2022-02-24 03:03:05,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2022-02-24 03:03:05,720 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1107 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:05,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 51 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:03:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-02-24 03:03:05,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 171. [2022-02-24 03:03:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 166 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2022-02-24 03:03:05,844 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2022-02-24 03:03:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:05,844 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2022-02-24 03:03:05,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 77 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2022-02-24 03:03:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-02-24 03:03:05,845 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:05,845 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:05,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-24 03:03:05,845 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:05,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1086811301, now seen corresponding path program 75 times [2022-02-24 03:03:05,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:05,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843118449] [2022-02-24 03:03:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:05,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:05,850 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:05,850 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:07,520 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:07,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843118449] [2022-02-24 03:03:07,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1843118449] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:07,520 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:07,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-24 03:03:07,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713536755] [2022-02-24 03:03:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:07,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-24 03:03:07,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-24 03:03:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 03:03:07,522 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 78 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:16,935 INFO L93 Difference]: Finished difference Result 485 states and 561 transitions. [2022-02-24 03:03:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-24 03:03:16,935 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 78 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 170 [2022-02-24 03:03:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:16,937 INFO L225 Difference]: With dead ends: 485 [2022-02-24 03:03:16,937 INFO L226 Difference]: Without dead ends: 471 [2022-02-24 03:03:16,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2022-02-24 03:03:16,938 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1383 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:16,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 36 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:03:16,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-02-24 03:03:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 173. [2022-02-24 03:03:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2022-02-24 03:03:17,070 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2022-02-24 03:03:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:17,070 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2022-02-24 03:03:17,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 78 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2022-02-24 03:03:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-24 03:03:17,071 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:17,071 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:17,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-24 03:03:17,071 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:17,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1013737913, now seen corresponding path program 76 times [2022-02-24 03:03:17,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:17,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48941367] [2022-02-24 03:03:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:17,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:17,076 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:17,076 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:18,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:18,789 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:18,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48941367] [2022-02-24 03:03:18,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [48941367] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:18,789 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:18,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-24 03:03:18,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202048597] [2022-02-24 03:03:18,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:18,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-24 03:03:18,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:18,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-24 03:03:18,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 03:03:18,791 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand has 80 states, 80 states have (on average 2.05) internal successors, (164), 79 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:28,695 INFO L93 Difference]: Finished difference Result 491 states and 568 transitions. [2022-02-24 03:03:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-24 03:03:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.05) internal successors, (164), 79 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172 [2022-02-24 03:03:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:28,697 INFO L225 Difference]: With dead ends: 491 [2022-02-24 03:03:28,697 INFO L226 Difference]: Without dead ends: 477 [2022-02-24 03:03:28,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2022-02-24 03:03:28,698 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1294 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:28,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1294 Valid, 36 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:03:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-02-24 03:03:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 175. [2022-02-24 03:03:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2022-02-24 03:03:28,839 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2022-02-24 03:03:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:28,840 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2022-02-24 03:03:28,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.05) internal successors, (164), 79 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2022-02-24 03:03:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-02-24 03:03:28,840 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:28,840 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:28,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-24 03:03:28,841 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:28,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1006903447, now seen corresponding path program 77 times [2022-02-24 03:03:28,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:28,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861428454] [2022-02-24 03:03:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:28,846 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:28,846 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:30,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:30,599 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:30,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861428454] [2022-02-24 03:03:30,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [861428454] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:30,599 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:30,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-24 03:03:30,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044296487] [2022-02-24 03:03:30,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:30,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-24 03:03:30,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-24 03:03:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 03:03:30,600 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 80 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:41,000 INFO L93 Difference]: Finished difference Result 497 states and 575 transitions. [2022-02-24 03:03:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-24 03:03:41,000 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 80 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 174 [2022-02-24 03:03:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:41,002 INFO L225 Difference]: With dead ends: 497 [2022-02-24 03:03:41,002 INFO L226 Difference]: Without dead ends: 483 [2022-02-24 03:03:41,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2022-02-24 03:03:41,003 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1294 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:41,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1294 Valid, 46 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:03:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-02-24 03:03:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 177. [2022-02-24 03:03:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2022-02-24 03:03:41,139 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2022-02-24 03:03:41,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:41,139 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2022-02-24 03:03:41,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 80 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2022-02-24 03:03:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-02-24 03:03:41,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:41,140 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:41,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-24 03:03:41,140 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:41,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1266051083, now seen corresponding path program 78 times [2022-02-24 03:03:41,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:41,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493591897] [2022-02-24 03:03:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:41,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:41,145 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:41,145 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:42,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:42,947 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:42,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493591897] [2022-02-24 03:03:42,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1493591897] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:42,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:42,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-24 03:03:42,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622344124] [2022-02-24 03:03:42,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:42,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-24 03:03:42,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:42,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-24 03:03:42,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 03:03:42,949 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 81 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:53,608 INFO L93 Difference]: Finished difference Result 503 states and 582 transitions. [2022-02-24 03:03:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-24 03:03:53,608 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 81 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 176 [2022-02-24 03:03:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:53,610 INFO L225 Difference]: With dead ends: 503 [2022-02-24 03:03:53,610 INFO L226 Difference]: Without dead ends: 489 [2022-02-24 03:03:53,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2022-02-24 03:03:53,611 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1295 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:53,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 51 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:03:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-02-24 03:03:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 179. [2022-02-24 03:03:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2022-02-24 03:03:53,752 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2022-02-24 03:03:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:53,752 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2022-02-24 03:03:53,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 81 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2022-02-24 03:03:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-02-24 03:03:53,752 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:53,753 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:53,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-24 03:03:53,753 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash -562999251, now seen corresponding path program 79 times [2022-02-24 03:03:53,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:53,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952285106] [2022-02-24 03:03:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:53,758 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:53,758 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:55,592 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:55,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952285106] [2022-02-24 03:03:55,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1952285106] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:55,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:55,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-24 03:03:55,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241180433] [2022-02-24 03:03:55,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:55,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-24 03:03:55,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-24 03:03:55,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 03:03:55,594 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 82 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:06,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:06,647 INFO L93 Difference]: Finished difference Result 509 states and 589 transitions. [2022-02-24 03:04:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-24 03:04:06,648 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 82 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 178 [2022-02-24 03:04:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:06,650 INFO L225 Difference]: With dead ends: 509 [2022-02-24 03:04:06,650 INFO L226 Difference]: Without dead ends: 495 [2022-02-24 03:04:06,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2022-02-24 03:04:06,651 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1397 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:06,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 41 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:04:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-02-24 03:04:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 181. [2022-02-24 03:04:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 176 states have (on average 1.0113636363636365) internal successors, (178), 176 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:06,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2022-02-24 03:04:06,799 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2022-02-24 03:04:06,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:06,799 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2022-02-24 03:04:06,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 82 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:06,800 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2022-02-24 03:04:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-02-24 03:04:06,800 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:06,800 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:06,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-24 03:04:06,800 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1638746161, now seen corresponding path program 80 times [2022-02-24 03:04:06,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:06,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502009734] [2022-02-24 03:04:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:06,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:06,805 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:06,805 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:08,682 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:08,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502009734] [2022-02-24 03:04:08,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1502009734] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:08,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:08,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-24 03:04:08,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442478848] [2022-02-24 03:04:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:08,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-24 03:04:08,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:08,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-24 03:04:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 03:04:08,685 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 83 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:20,089 INFO L93 Difference]: Finished difference Result 515 states and 596 transitions. [2022-02-24 03:04:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-24 03:04:20,090 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 83 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 180 [2022-02-24 03:04:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:20,091 INFO L225 Difference]: With dead ends: 515 [2022-02-24 03:04:20,091 INFO L226 Difference]: Without dead ends: 501 [2022-02-24 03:04:20,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2022-02-24 03:04:20,092 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:20,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 46 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:04:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-02-24 03:04:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 183. [2022-02-24 03:04:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 178 states have internal predecessors, (180), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2022-02-24 03:04:20,240 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2022-02-24 03:04:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:20,240 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2022-02-24 03:04:20,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 83 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2022-02-24 03:04:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-02-24 03:04:20,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:20,241 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:20,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-24 03:04:20,241 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:20,241 INFO L85 PathProgramCache]: Analyzing trace with hash -344408335, now seen corresponding path program 81 times [2022-02-24 03:04:20,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:20,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130221676] [2022-02-24 03:04:20,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:20,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:20,246 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:20,246 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:22,169 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:22,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130221676] [2022-02-24 03:04:22,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2130221676] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:22,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:22,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-24 03:04:22,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69829714] [2022-02-24 03:04:22,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:22,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-24 03:04:22,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-24 03:04:22,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 03:04:22,172 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 84 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:34,019 INFO L93 Difference]: Finished difference Result 521 states and 603 transitions. [2022-02-24 03:04:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-24 03:04:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 84 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 182 [2022-02-24 03:04:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:34,021 INFO L225 Difference]: With dead ends: 521 [2022-02-24 03:04:34,021 INFO L226 Difference]: Without dead ends: 507 [2022-02-24 03:04:34,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2022-02-24 03:04:34,022 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1335 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:34,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 41 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:04:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-02-24 03:04:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 185. [2022-02-24 03:04:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.011111111111111) internal successors, (182), 180 states have internal predecessors, (182), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2022-02-24 03:04:34,173 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2022-02-24 03:04:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:34,173 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2022-02-24 03:04:34,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 84 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2022-02-24 03:04:34,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-02-24 03:04:34,174 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:34,174 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:34,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-24 03:04:34,174 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:34,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:34,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2026273389, now seen corresponding path program 82 times [2022-02-24 03:04:34,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:34,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915094501] [2022-02-24 03:04:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:34,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:34,180 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:34,180 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:36,172 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:36,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915094501] [2022-02-24 03:04:36,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1915094501] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:36,172 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:36,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-24 03:04:36,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946675970] [2022-02-24 03:04:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:36,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-24 03:04:36,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-24 03:04:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 03:04:36,174 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 85 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:48,430 INFO L93 Difference]: Finished difference Result 527 states and 610 transitions. [2022-02-24 03:04:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-24 03:04:48,430 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 85 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 184 [2022-02-24 03:04:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:48,432 INFO L225 Difference]: With dead ends: 527 [2022-02-24 03:04:48,432 INFO L226 Difference]: Without dead ends: 513 [2022-02-24 03:04:48,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2022-02-24 03:04:48,433 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1594 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:48,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 36 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:04:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-02-24 03:04:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 187. [2022-02-24 03:04:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2022-02-24 03:04:48,587 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2022-02-24 03:04:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:48,587 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2022-02-24 03:04:48,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 85 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2022-02-24 03:04:48,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-02-24 03:04:48,588 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:48,588 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:48,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-24 03:04:48,588 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash 904080309, now seen corresponding path program 83 times [2022-02-24 03:04:48,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:48,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074103240] [2022-02-24 03:04:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:48,593 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:48,593 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:50,705 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:50,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074103240] [2022-02-24 03:04:50,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2074103240] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:50,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:50,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-24 03:04:50,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894514591] [2022-02-24 03:04:50,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:50,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-24 03:04:50,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-24 03:04:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 03:04:50,708 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 86 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:03,509 INFO L93 Difference]: Finished difference Result 533 states and 617 transitions. [2022-02-24 03:05:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-24 03:05:03,509 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 86 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 186 [2022-02-24 03:05:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:03,511 INFO L225 Difference]: With dead ends: 533 [2022-02-24 03:05:03,511 INFO L226 Difference]: Without dead ends: 519 [2022-02-24 03:05:03,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2022-02-24 03:05:03,512 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1588 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:03,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 41 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:05:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-02-24 03:05:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 189. [2022-02-24 03:05:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 184 states have internal predecessors, (186), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2022-02-24 03:05:03,675 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2022-02-24 03:05:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:03,675 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2022-02-24 03:05:03,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 86 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2022-02-24 03:05:03,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-02-24 03:05:03,676 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:03,676 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:03,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-24 03:05:03,676 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:03,676 INFO L85 PathProgramCache]: Analyzing trace with hash -524562089, now seen corresponding path program 84 times [2022-02-24 03:05:03,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:03,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257000483] [2022-02-24 03:05:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:03,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:03,681 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:03,681 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:05,738 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:05,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257000483] [2022-02-24 03:05:05,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1257000483] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:05,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:05,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-24 03:05:05,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89868636] [2022-02-24 03:05:05,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:05,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-24 03:05:05,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-24 03:05:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 03:05:05,740 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 87 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:18,752 INFO L93 Difference]: Finished difference Result 539 states and 624 transitions. [2022-02-24 03:05:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-24 03:05:18,752 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 87 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188 [2022-02-24 03:05:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:18,754 INFO L225 Difference]: With dead ends: 539 [2022-02-24 03:05:18,754 INFO L226 Difference]: Without dead ends: 525 [2022-02-24 03:05:18,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2022-02-24 03:05:18,755 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1485 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:18,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 31 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:05:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-02-24 03:05:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 191. [2022-02-24 03:05:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.010752688172043) internal successors, (188), 186 states have internal predecessors, (188), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2022-02-24 03:05:18,916 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2022-02-24 03:05:18,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:18,917 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2022-02-24 03:05:18,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 87 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:18,917 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2022-02-24 03:05:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-02-24 03:05:18,917 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:18,918 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:18,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-24 03:05:18,918 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash 939628153, now seen corresponding path program 85 times [2022-02-24 03:05:18,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:18,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40101298] [2022-02-24 03:05:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:18,923 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:18,923 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:21,031 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:21,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40101298] [2022-02-24 03:05:21,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [40101298] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:21,031 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:21,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-24 03:05:21,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685924644] [2022-02-24 03:05:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:21,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-24 03:05:21,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-24 03:05:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 03:05:21,034 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 88 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:34,439 INFO L93 Difference]: Finished difference Result 545 states and 631 transitions. [2022-02-24 03:05:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-24 03:05:34,440 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 88 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 190 [2022-02-24 03:05:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:34,441 INFO L225 Difference]: With dead ends: 545 [2022-02-24 03:05:34,441 INFO L226 Difference]: Without dead ends: 531 [2022-02-24 03:05:34,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2022-02-24 03:05:34,442 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1788 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:34,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1788 Valid, 36 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:05:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-02-24 03:05:34,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 193. [2022-02-24 03:05:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 188 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2022-02-24 03:05:34,608 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2022-02-24 03:05:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:34,608 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2022-02-24 03:05:34,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 88 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2022-02-24 03:05:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-02-24 03:05:34,608 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:34,609 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:34,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-24 03:05:34,609 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash -722822373, now seen corresponding path program 86 times [2022-02-24 03:05:34,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:34,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46395234] [2022-02-24 03:05:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:34,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:34,614 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:34,614 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:36,762 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:36,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46395234] [2022-02-24 03:05:36,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [46395234] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:36,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:36,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-24 03:05:36,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084081419] [2022-02-24 03:05:36,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:36,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-24 03:05:36,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:36,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-24 03:05:36,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 03:05:36,765 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 90 states, 90 states have (on average 2.0444444444444443) internal successors, (184), 89 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:50,639 INFO L93 Difference]: Finished difference Result 551 states and 638 transitions. [2022-02-24 03:05:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-24 03:05:50,649 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.0444444444444443) internal successors, (184), 89 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 192 [2022-02-24 03:05:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:50,651 INFO L225 Difference]: With dead ends: 551 [2022-02-24 03:05:50,651 INFO L226 Difference]: Without dead ends: 537 [2022-02-24 03:05:50,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2022-02-24 03:05:50,652 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1536 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:50,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 26 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:05:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-02-24 03:05:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 195. [2022-02-24 03:05:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 190 states have internal predecessors, (192), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2022-02-24 03:05:50,826 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2022-02-24 03:05:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:50,827 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2022-02-24 03:05:50,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.0444444444444443) internal successors, (184), 89 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2022-02-24 03:05:50,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-02-24 03:05:50,827 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:50,828 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:50,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-24 03:05:50,828 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:50,828 INFO L85 PathProgramCache]: Analyzing trace with hash -609943747, now seen corresponding path program 87 times [2022-02-24 03:05:50,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:50,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535030160] [2022-02-24 03:05:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:50,833 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:50,833 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:53,025 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:53,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535030160] [2022-02-24 03:05:53,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [535030160] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:53,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:53,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-24 03:05:53,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745961211] [2022-02-24 03:05:53,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:53,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-24 03:05:53,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:53,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-24 03:05:53,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 03:05:53,028 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 90 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:06:07,761 INFO L93 Difference]: Finished difference Result 557 states and 645 transitions. [2022-02-24 03:06:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-24 03:06:07,761 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 90 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 194 [2022-02-24 03:06:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:06:07,762 INFO L225 Difference]: With dead ends: 557 [2022-02-24 03:06:07,762 INFO L226 Difference]: Without dead ends: 543 [2022-02-24 03:06:07,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2022-02-24 03:06:07,764 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1423 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 03:06:07,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 56 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 03:06:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-02-24 03:06:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 197. [2022-02-24 03:06:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2022-02-24 03:06:07,941 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2022-02-24 03:06:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:06:07,941 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2022-02-24 03:06:07,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 90 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2022-02-24 03:06:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-02-24 03:06:07,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:06:07,942 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:06:07,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-24 03:06:07,942 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:06:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:06:07,943 INFO L85 PathProgramCache]: Analyzing trace with hash 492233439, now seen corresponding path program 88 times [2022-02-24 03:06:07,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:06:07,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958069559] [2022-02-24 03:06:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:06:07,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:06:07,948 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:06:07,948 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:06:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:06:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:06:10,195 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:06:10,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958069559] [2022-02-24 03:06:10,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [958069559] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:06:10,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:06:10,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-24 03:06:10,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525034172] [2022-02-24 03:06:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:06:10,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-24 03:06:10,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:06:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-24 03:06:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 03:06:10,198 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 91 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:06:25,432 INFO L93 Difference]: Finished difference Result 563 states and 652 transitions. [2022-02-24 03:06:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-24 03:06:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 91 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 196 [2022-02-24 03:06:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:06:25,434 INFO L225 Difference]: With dead ends: 563 [2022-02-24 03:06:25,434 INFO L226 Difference]: Without dead ends: 549 [2022-02-24 03:06:25,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2022-02-24 03:06:25,435 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1657 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:06:25,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1657 Valid, 31 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:06:25,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-02-24 03:06:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 199. [2022-02-24 03:06:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 194 states have (on average 1.0103092783505154) internal successors, (196), 194 states have internal predecessors, (196), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2022-02-24 03:06:25,616 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2022-02-24 03:06:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:06:25,616 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2022-02-24 03:06:25,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 91 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2022-02-24 03:06:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-02-24 03:06:25,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:06:25,617 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:06:25,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-24 03:06:25,617 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:06:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:06:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1172412927, now seen corresponding path program 89 times [2022-02-24 03:06:25,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:06:25,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106073645] [2022-02-24 03:06:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:06:25,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:06:25,622 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:06:25,622 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:06:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:06:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:06:27,904 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:06:27,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106073645] [2022-02-24 03:06:27,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [106073645] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:06:27,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:06:27,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-24 03:06:27,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863697935] [2022-02-24 03:06:27,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:06:27,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-24 03:06:27,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:06:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-24 03:06:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 03:06:27,907 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 92 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:06:43,691 INFO L93 Difference]: Finished difference Result 569 states and 659 transitions. [2022-02-24 03:06:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-24 03:06:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 92 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 198 [2022-02-24 03:06:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:06:43,692 INFO L225 Difference]: With dead ends: 569 [2022-02-24 03:06:43,692 INFO L226 Difference]: Without dead ends: 555 [2022-02-24 03:06:43,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2022-02-24 03:06:43,694 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1448 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:06:43,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 41 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:06:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-02-24 03:06:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 201. [2022-02-24 03:06:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.010204081632653) internal successors, (198), 196 states have internal predecessors, (198), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-02-24 03:06:43,881 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2022-02-24 03:06:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:06:43,881 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-02-24 03:06:43,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 92 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-02-24 03:06:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-02-24 03:06:43,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:06:43,882 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:06:43,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-24 03:06:43,882 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:06:43,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:06:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1125230755, now seen corresponding path program 90 times [2022-02-24 03:06:43,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:06:43,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565865199] [2022-02-24 03:06:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:06:43,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:06:43,887 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:06:43,888 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:06:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:06:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:06:46,265 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:06:46,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565865199] [2022-02-24 03:06:46,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1565865199] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:06:46,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:06:46,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-24 03:06:46,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200167481] [2022-02-24 03:06:46,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:06:46,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-24 03:06:46,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:06:46,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-24 03:06:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 03:06:46,269 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 93 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:07:02,513 INFO L93 Difference]: Finished difference Result 575 states and 666 transitions. [2022-02-24 03:07:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-24 03:07:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 93 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 200 [2022-02-24 03:07:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:07:02,515 INFO L225 Difference]: With dead ends: 575 [2022-02-24 03:07:02,515 INFO L226 Difference]: Without dead ends: 561 [2022-02-24 03:07:02,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2022-02-24 03:07:02,516 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1432 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:07:02,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1432 Valid, 46 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:07:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-02-24 03:07:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 203. [2022-02-24 03:07:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 198 states have internal predecessors, (200), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2022-02-24 03:07:02,704 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2022-02-24 03:07:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:07:02,704 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2022-02-24 03:07:02,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 93 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2022-02-24 03:07:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-02-24 03:07:02,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:07:02,705 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:07:02,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-24 03:07:02,705 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:07:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:07:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1547619013, now seen corresponding path program 91 times [2022-02-24 03:07:02,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:07:02,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146901801] [2022-02-24 03:07:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:07:02,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:07:02,711 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:07:02,711 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:07:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:07:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:07:05,111 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:07:05,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146901801] [2022-02-24 03:07:05,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1146901801] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:07:05,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:07:05,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-24 03:07:05,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411060945] [2022-02-24 03:07:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:07:05,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-24 03:07:05,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:07:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-24 03:07:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 03:07:05,113 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 94 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:07:22,001 INFO L93 Difference]: Finished difference Result 581 states and 673 transitions. [2022-02-24 03:07:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-24 03:07:22,011 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 94 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 202 [2022-02-24 03:07:22,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:07:22,013 INFO L225 Difference]: With dead ends: 581 [2022-02-24 03:07:22,013 INFO L226 Difference]: Without dead ends: 567 [2022-02-24 03:07:22,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2022-02-24 03:07:22,014 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1401 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:07:22,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1401 Valid, 61 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:07:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-02-24 03:07:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 205. [2022-02-24 03:07:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.01) internal successors, (202), 200 states have internal predecessors, (202), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2022-02-24 03:07:22,229 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2022-02-24 03:07:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:07:22,229 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2022-02-24 03:07:22,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 94 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2022-02-24 03:07:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-02-24 03:07:22,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:07:22,230 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:07:22,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-24 03:07:22,231 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:07:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:07:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash -559158169, now seen corresponding path program 92 times [2022-02-24 03:07:22,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:07:22,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698469704] [2022-02-24 03:07:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:07:22,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:07:22,236 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:07:22,236 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:07:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:07:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:07:24,678 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:07:24,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698469704] [2022-02-24 03:07:24,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1698469704] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:07:24,678 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:07:24,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-24 03:07:24,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982699132] [2022-02-24 03:07:24,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:07:24,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-24 03:07:24,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:07:24,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-24 03:07:24,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 03:07:24,680 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 95 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:07:42,636 INFO L93 Difference]: Finished difference Result 587 states and 680 transitions. [2022-02-24 03:07:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-24 03:07:42,636 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 95 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 204 [2022-02-24 03:07:42,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:07:42,638 INFO L225 Difference]: With dead ends: 587 [2022-02-24 03:07:42,638 INFO L226 Difference]: Without dead ends: 573 [2022-02-24 03:07:42,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2022-02-24 03:07:42,639 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1696 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:07:42,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1696 Valid, 36 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:07:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-02-24 03:07:42,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 207. [2022-02-24 03:07:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.00990099009901) internal successors, (204), 202 states have internal predecessors, (204), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2022-02-24 03:07:42,845 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2022-02-24 03:07:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:07:42,845 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2022-02-24 03:07:42,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 95 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:42,845 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2022-02-24 03:07:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-02-24 03:07:42,846 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:07:42,846 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:07:42,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-24 03:07:42,846 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:07:42,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:07:42,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2052533641, now seen corresponding path program 93 times [2022-02-24 03:07:42,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:07:42,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043713537] [2022-02-24 03:07:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:07:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:07:42,852 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:07:42,852 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:07:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:07:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:07:45,376 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:07:45,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043713537] [2022-02-24 03:07:45,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2043713537] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:07:45,376 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:07:45,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-24 03:07:45,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017875722] [2022-02-24 03:07:45,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:07:45,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-24 03:07:45,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:07:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-24 03:07:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 03:07:45,379 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 96 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:08:03,580 INFO L93 Difference]: Finished difference Result 593 states and 687 transitions. [2022-02-24 03:08:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-24 03:08:03,580 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 96 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 206 [2022-02-24 03:08:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:08:03,583 INFO L225 Difference]: With dead ends: 593 [2022-02-24 03:08:03,584 INFO L226 Difference]: Without dead ends: 579 [2022-02-24 03:08:03,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-02-24 03:08:03,585 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1792 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:08:03,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1792 Valid, 36 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:08:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-02-24 03:08:03,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 209. [2022-02-24 03:08:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 204 states have internal predecessors, (206), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2022-02-24 03:08:03,793 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2022-02-24 03:08:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:08:03,793 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2022-02-24 03:08:03,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 96 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2022-02-24 03:08:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-02-24 03:08:03,794 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:08:03,794 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:08:03,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-24 03:08:03,795 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:08:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:08:03,795 INFO L85 PathProgramCache]: Analyzing trace with hash -667505109, now seen corresponding path program 94 times [2022-02-24 03:08:03,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:08:03,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996745761] [2022-02-24 03:08:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:08:03,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:08:03,801 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:08:03,801 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:08:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:08:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:08:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:08:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:08:06,350 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:08:06,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996745761] [2022-02-24 03:08:06,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [996745761] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:08:06,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:08:06,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-24 03:08:06,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841278034] [2022-02-24 03:08:06,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:08:06,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-24 03:08:06,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:08:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-24 03:08:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 03:08:06,353 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 97 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:08:24,968 INFO L93 Difference]: Finished difference Result 599 states and 694 transitions. [2022-02-24 03:08:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-24 03:08:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 97 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 208 [2022-02-24 03:08:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:08:24,970 INFO L225 Difference]: With dead ends: 599 [2022-02-24 03:08:24,970 INFO L226 Difference]: Without dead ends: 585 [2022-02-24 03:08:24,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2022-02-24 03:08:24,971 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1466 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:08:24,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 36 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:08:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-02-24 03:08:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 211. [2022-02-24 03:08:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 206 states have (on average 1.0097087378640777) internal successors, (208), 206 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2022-02-24 03:08:25,191 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2022-02-24 03:08:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:08:25,192 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2022-02-24 03:08:25,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 97 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2022-02-24 03:08:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-02-24 03:08:25,192 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:08:25,193 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:08:25,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-24 03:08:25,193 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:08:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:08:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1010339405, now seen corresponding path program 95 times [2022-02-24 03:08:25,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:08:25,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113076551] [2022-02-24 03:08:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:08:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:08:25,199 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:08:25,199 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:08:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:08:27,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:08:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:08:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:08:27,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:08:27,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113076551] [2022-02-24 03:08:27,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2113076551] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:08:27,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:08:27,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-24 03:08:27,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427231432] [2022-02-24 03:08:27,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:08:27,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-24 03:08:27,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:08:27,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-24 03:08:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 03:08:27,812 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 98 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:08:47,336 INFO L93 Difference]: Finished difference Result 605 states and 701 transitions. [2022-02-24 03:08:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-24 03:08:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 98 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 210 [2022-02-24 03:08:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:08:47,338 INFO L225 Difference]: With dead ends: 605 [2022-02-24 03:08:47,338 INFO L226 Difference]: Without dead ends: 591 [2022-02-24 03:08:47,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-02-24 03:08:47,340 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1751 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:08:47,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 51 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:08:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-02-24 03:08:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 213. [2022-02-24 03:08:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 208 states have internal predecessors, (210), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2022-02-24 03:08:47,563 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2022-02-24 03:08:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:08:47,563 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2022-02-24 03:08:47,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 98 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2022-02-24 03:08:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-02-24 03:08:47,564 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:08:47,564 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:08:47,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-24 03:08:47,564 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:08:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:08:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1488785937, now seen corresponding path program 96 times [2022-02-24 03:08:47,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:08:47,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807438699] [2022-02-24 03:08:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:08:47,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:08:47,571 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:08:47,571 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:08:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:08:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:08:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:08:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:08:50,224 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:08:50,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807438699] [2022-02-24 03:08:50,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [807438699] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:08:50,224 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:08:50,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-24 03:08:50,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288892129] [2022-02-24 03:08:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:08:50,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-24 03:08:50,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:08:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-24 03:08:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 03:08:50,226 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand has 100 states, 100 states have (on average 2.04) internal successors, (204), 99 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:09:10,083 INFO L93 Difference]: Finished difference Result 611 states and 708 transitions. [2022-02-24 03:09:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-24 03:09:10,083 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.04) internal successors, (204), 99 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 212 [2022-02-24 03:09:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:09:10,085 INFO L225 Difference]: With dead ends: 611 [2022-02-24 03:09:10,085 INFO L226 Difference]: Without dead ends: 597 [2022-02-24 03:09:10,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2022-02-24 03:09:10,086 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1631 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:09:10,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1631 Valid, 36 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:09:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-02-24 03:09:10,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 215. [2022-02-24 03:09:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 210 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2022-02-24 03:09:10,309 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2022-02-24 03:09:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:09:10,309 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2022-02-24 03:09:10,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.04) internal successors, (204), 99 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2022-02-24 03:09:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-02-24 03:09:10,310 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:09:10,310 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:09:10,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-24 03:09:10,310 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:09:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:09:10,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2033446161, now seen corresponding path program 97 times [2022-02-24 03:09:10,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:09:10,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560084881] [2022-02-24 03:09:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:09:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:09:10,317 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:09:10,317 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:09:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:09:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:09:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:09:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:09:13,032 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:09:13,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560084881] [2022-02-24 03:09:13,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1560084881] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:09:13,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:09:13,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-24 03:09:13,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151616161] [2022-02-24 03:09:13,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:09:13,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-24 03:09:13,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:09:13,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-24 03:09:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 03:09:13,036 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 100 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:09:33,367 INFO L93 Difference]: Finished difference Result 617 states and 715 transitions. [2022-02-24 03:09:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-24 03:09:33,368 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 100 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 214 [2022-02-24 03:09:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:09:33,369 INFO L225 Difference]: With dead ends: 617 [2022-02-24 03:09:33,369 INFO L226 Difference]: Without dead ends: 603 [2022-02-24 03:09:33,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2022-02-24 03:09:33,370 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1534 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:09:33,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 46 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:09:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-02-24 03:09:33,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 217. [2022-02-24 03:09:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.009433962264151) internal successors, (214), 212 states have internal predecessors, (214), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2022-02-24 03:09:33,595 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2022-02-24 03:09:33,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:09:33,595 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2022-02-24 03:09:33,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 100 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2022-02-24 03:09:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-02-24 03:09:33,596 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:09:33,596 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:09:33,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-24 03:09:33,596 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:09:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:09:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1830704205, now seen corresponding path program 98 times [2022-02-24 03:09:33,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:09:33,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865653477] [2022-02-24 03:09:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:09:33,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:09:33,603 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:09:33,603 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:09:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:09:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:09:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:09:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:09:36,355 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:09:36,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865653477] [2022-02-24 03:09:36,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1865653477] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:09:36,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:09:36,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-24 03:09:36,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870837024] [2022-02-24 03:09:36,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:09:36,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-24 03:09:36,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:09:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-24 03:09:36,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 03:09:36,358 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 101 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:09:57,357 INFO L93 Difference]: Finished difference Result 623 states and 722 transitions. [2022-02-24 03:09:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-24 03:09:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 101 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 216 [2022-02-24 03:09:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:09:57,359 INFO L225 Difference]: With dead ends: 623 [2022-02-24 03:09:57,359 INFO L226 Difference]: Without dead ends: 609 [2022-02-24 03:09:57,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2022-02-24 03:09:57,360 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1698 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 03:09:57,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1698 Valid, 46 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 03:09:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-02-24 03:09:57,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 219. [2022-02-24 03:09:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 214 states have internal predecessors, (216), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2022-02-24 03:09:57,588 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2022-02-24 03:09:57,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:09:57,588 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2022-02-24 03:09:57,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 101 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:09:57,589 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2022-02-24 03:09:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-02-24 03:09:57,589 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:09:57,589 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:09:57,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-24 03:09:57,589 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:09:57,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:09:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash -132494891, now seen corresponding path program 99 times [2022-02-24 03:09:57,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:09:57,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334183068] [2022-02-24 03:09:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:09:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:09:57,596 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:09:57,596 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:09:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:10:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:10:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:10:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:10:00,391 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:10:00,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334183068] [2022-02-24 03:10:00,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [334183068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:10:00,391 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:10:00,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-24 03:10:00,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722826151] [2022-02-24 03:10:00,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:10:00,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-24 03:10:00,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:10:00,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-24 03:10:00,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 03:10:00,394 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 102 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:10:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:10:22,472 INFO L93 Difference]: Finished difference Result 629 states and 729 transitions. [2022-02-24 03:10:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-24 03:10:22,472 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 102 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 218 [2022-02-24 03:10:22,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:10:22,473 INFO L225 Difference]: With dead ends: 629 [2022-02-24 03:10:22,473 INFO L226 Difference]: Without dead ends: 615 [2022-02-24 03:10:22,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-02-24 03:10:22,475 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 2120 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 03:10:22,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2120 Valid, 41 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 03:10:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-02-24 03:10:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 221. [2022-02-24 03:10:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 216 states have internal predecessors, (218), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:10:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2022-02-24 03:10:22,719 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2022-02-24 03:10:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:10:22,719 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2022-02-24 03:10:22,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 102 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:10:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2022-02-24 03:10:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-02-24 03:10:22,720 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:10:22,720 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:10:22,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-24 03:10:22,720 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:10:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:10:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash -240916617, now seen corresponding path program 100 times [2022-02-24 03:10:22,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:10:22,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687130157] [2022-02-24 03:10:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:10:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:10:22,727 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:10:22,727 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:10:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:10:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:10:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:10:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:10:25,597 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:10:25,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687130157] [2022-02-24 03:10:25,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [687130157] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:10:25,597 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:10:25,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-24 03:10:25,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255032040] [2022-02-24 03:10:25,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:10:25,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-24 03:10:25,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:10:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-24 03:10:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 03:10:25,602 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 103 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:10:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:10:48,425 INFO L93 Difference]: Finished difference Result 635 states and 736 transitions. [2022-02-24 03:10:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-24 03:10:48,425 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 103 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 220 [2022-02-24 03:10:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:10:48,427 INFO L225 Difference]: With dead ends: 635 [2022-02-24 03:10:48,427 INFO L226 Difference]: Without dead ends: 621 [2022-02-24 03:10:48,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2022-02-24 03:10:48,428 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1732 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 03:10:48,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1732 Valid, 36 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 03:10:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-02-24 03:10:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 223. [2022-02-24 03:10:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 218 states have (on average 1.0091743119266054) internal successors, (220), 218 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:10:48,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2022-02-24 03:10:48,684 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2022-02-24 03:10:48,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:10:48,684 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2022-02-24 03:10:48,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 103 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:10:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2022-02-24 03:10:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-02-24 03:10:48,685 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:10:48,685 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:10:48,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-24 03:10:48,685 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:10:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:10:48,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1354980199, now seen corresponding path program 101 times [2022-02-24 03:10:48,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:10:48,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492774668] [2022-02-24 03:10:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:10:48,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:10:48,692 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:10:48,692 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:10:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:10:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:10:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:10:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:10:51,611 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:10:51,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492774668] [2022-02-24 03:10:51,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [492774668] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:10:51,611 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:10:51,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-02-24 03:10:51,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913595253] [2022-02-24 03:10:51,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:10:51,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-24 03:10:51,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:10:51,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-24 03:10:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 03:10:51,614 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 104 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:11:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:11:15,411 INFO L93 Difference]: Finished difference Result 641 states and 743 transitions. [2022-02-24 03:11:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-24 03:11:15,411 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 104 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 222 [2022-02-24 03:11:15,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:11:15,412 INFO L225 Difference]: With dead ends: 641 [2022-02-24 03:11:15,412 INFO L226 Difference]: Without dead ends: 627 [2022-02-24 03:11:15,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2022-02-24 03:11:15,414 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 2045 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 03:11:15,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2045 Valid, 26 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 03:11:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-02-24 03:11:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 225. [2022-02-24 03:11:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 220 states have (on average 1.009090909090909) internal successors, (222), 220 states have internal predecessors, (222), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:11:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2022-02-24 03:11:15,679 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2022-02-24 03:11:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:11:15,679 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2022-02-24 03:11:15,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 104 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:11:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2022-02-24 03:11:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-02-24 03:11:15,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:11:15,680 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:11:15,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-02-24 03:11:15,680 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:11:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:11:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1771741499, now seen corresponding path program 102 times [2022-02-24 03:11:15,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:11:15,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659568044] [2022-02-24 03:11:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:11:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:11:15,688 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:11:15,688 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:11:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:11:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:11:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:11:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:11:18,668 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:11:18,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659568044] [2022-02-24 03:11:18,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1659568044] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:11:18,668 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:11:18,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-02-24 03:11:18,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684240132] [2022-02-24 03:11:18,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:11:18,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-24 03:11:18,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:11:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-24 03:11:18,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 03:11:18,671 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 105 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:11:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:11:43,334 INFO L93 Difference]: Finished difference Result 647 states and 750 transitions. [2022-02-24 03:11:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-24 03:11:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 105 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 224 [2022-02-24 03:11:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:11:43,339 INFO L225 Difference]: With dead ends: 647 [2022-02-24 03:11:43,340 INFO L226 Difference]: Without dead ends: 633 [2022-02-24 03:11:43,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2022-02-24 03:11:43,341 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1760 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 03:11:43,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 51 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 03:11:43,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-02-24 03:11:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 227. [2022-02-24 03:11:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:11:43,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2022-02-24 03:11:43,598 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2022-02-24 03:11:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:11:43,599 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2022-02-24 03:11:43,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 105 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:11:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2022-02-24 03:11:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-02-24 03:11:43,599 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:11:43,599 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:11:43,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-02-24 03:11:43,600 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:11:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:11:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash 74186077, now seen corresponding path program 103 times [2022-02-24 03:11:43,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:11:43,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770540309] [2022-02-24 03:11:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:11:43,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:11:43,606 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:11:43,606 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:11:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:11:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:11:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:11:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:11:46,645 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:11:46,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770540309] [2022-02-24 03:11:46,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1770540309] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:11:46,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:11:46,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-02-24 03:11:46,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118144382] [2022-02-24 03:11:46,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:11:46,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-24 03:11:46,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:11:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-24 03:11:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 03:11:46,648 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 106 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:12:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:12:12,341 INFO L93 Difference]: Finished difference Result 653 states and 757 transitions. [2022-02-24 03:12:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-24 03:12:12,342 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 106 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 226 [2022-02-24 03:12:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:12:12,343 INFO L225 Difference]: With dead ends: 653 [2022-02-24 03:12:12,343 INFO L226 Difference]: Without dead ends: 639 [2022-02-24 03:12:12,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2022-02-24 03:12:12,344 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1811 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 03:12:12,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 41 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 03:12:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-02-24 03:12:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 229. [2022-02-24 03:12:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 224 states have (on average 1.0089285714285714) internal successors, (226), 224 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:12:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2022-02-24 03:12:12,610 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2022-02-24 03:12:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:12:12,610 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2022-02-24 03:12:12,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 106 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:12:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2022-02-24 03:12:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-02-24 03:12:12,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:12:12,611 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:12:12,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-02-24 03:12:12,611 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:12:12,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:12:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash 810998015, now seen corresponding path program 104 times [2022-02-24 03:12:12,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:12:12,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547259417] [2022-02-24 03:12:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:12:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:12:12,618 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:12:12,618 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:12:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:12:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:12:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:12:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:12:15,680 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:12:15,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547259417] [2022-02-24 03:12:15,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1547259417] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:12:15,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:12:15,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-02-24 03:12:15,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537817459] [2022-02-24 03:12:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:12:15,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-02-24 03:12:15,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:12:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-02-24 03:12:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-02-24 03:12:15,682 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand has 108 states, 108 states have (on average 2.037037037037037) internal successors, (220), 107 states have internal predecessors, (220), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)