/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/loops/sum_array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 03:38:45,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 03:38:45,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 03:38:45,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 03:38:45,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 03:38:45,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 03:38:45,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 03:38:45,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 03:38:45,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 03:38:45,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 03:38:45,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 03:38:45,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 03:38:45,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 03:38:45,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 03:38:45,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 03:38:45,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 03:38:45,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 03:38:45,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 03:38:45,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 03:38:45,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 03:38:45,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-15 03:38:45,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 03:38:45,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 03:38:45,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 03:38:45,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 03:38:45,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 03:38:45,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 03:38:45,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 03:38:45,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 03:38:45,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 03:38:45,775 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 03:38:45,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 03:38:45,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 03:38:45,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 03:38:45,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 03:38:45,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 03:38:45,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 03:38:45,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 03:38:45,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 03:38:45,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 03:38:45,776 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-15 03:38:45,776 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 03:38:45,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 03:38:45,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 03:38:45,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 03:38:45,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 03:38:46,000 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 03:38:46,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-2.i [2022-02-15 03:38:46,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4cdd4df8/c6fa06045f0b4051920df55ec70dfc48/FLAGe980b2cd7 [2022-02-15 03:38:46,417 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 03:38:46,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i [2022-02-15 03:38:46,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4cdd4df8/c6fa06045f0b4051920df55ec70dfc48/FLAGe980b2cd7 [2022-02-15 03:38:46,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4cdd4df8/c6fa06045f0b4051920df55ec70dfc48 [2022-02-15 03:38:46,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 03:38:46,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 03:38:46,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 03:38:46,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 03:38:46,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 03:38:46,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189b7ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46, skipping insertion in model container [2022-02-15 03:38:46,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 03:38:46,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 03:38:46,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i[938,951] [2022-02-15 03:38:46,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 03:38:46,703 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 03:38:46,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i[938,951] [2022-02-15 03:38:46,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 03:38:46,762 INFO L208 MainTranslator]: Completed translation [2022-02-15 03:38:46,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46 WrapperNode [2022-02-15 03:38:46,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 03:38:46,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 03:38:46,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 03:38:46,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 03:38:46,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 03:38:46,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 03:38:46,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 03:38:46,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 03:38:46,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (1/1) ... [2022-02-15 03:38:46,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 03:38:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 03:38:46,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 03:38:46,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 03:38:46,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 03:38:46,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 03:38:46,907 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 03:38:46,907 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-15 03:38:46,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 03:38:46,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 03:38:46,907 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 03:38:46,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 03:38:46,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-15 03:38:46,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-15 03:38:46,908 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 03:38:46,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 03:38:46,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-15 03:38:46,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 03:38:46,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 03:38:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-15 03:38:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 03:38:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 03:38:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 03:38:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 03:38:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 03:38:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 03:38:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 03:38:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 03:38:47,014 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 03:38:47,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 03:38:47,194 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 03:38:47,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 03:38:47,198 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-15 03:38:47,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 03:38:47 BoogieIcfgContainer [2022-02-15 03:38:47,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 03:38:47,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 03:38:47,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 03:38:47,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 03:38:47,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 03:38:46" (1/3) ... [2022-02-15 03:38:47,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a896e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 03:38:47, skipping insertion in model container [2022-02-15 03:38:47,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:38:46" (2/3) ... [2022-02-15 03:38:47,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a896e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 03:38:47, skipping insertion in model container [2022-02-15 03:38:47,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 03:38:47" (3/3) ... [2022-02-15 03:38:47,207 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-2.i [2022-02-15 03:38:47,210 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 03:38:47,210 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 03:38:47,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 03:38:47,250 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-15 03:38:47,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 03:38:47,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 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) [2022-02-15 03:38:47,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 03:38:47,272 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:47,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:47,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:47,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689087, now seen corresponding path program 1 times [2022-02-15 03:38:47,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:47,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152460897] [2022-02-15 03:38:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:47,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:47,328 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:47,451 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:47,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152460897] [2022-02-15 03:38:47,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [152460897] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:47,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:47,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 03:38:47,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131522913] [2022-02-15 03:38:47,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:47,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 03:38:47,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 03:38:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 03:38:47,478 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 03:38:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:47,517 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2022-02-15 03:38:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 03:38:47,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 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 17 [2022-02-15 03:38:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:47,530 INFO L225 Difference]: With dead ends: 55 [2022-02-15 03:38:47,531 INFO L226 Difference]: Without dead ends: 27 [2022-02-15 03:38:47,533 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 [2022-02-15 03:38:47,537 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 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 [2022-02-15 03:38:47,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 03:38:47,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-15 03:38:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-15 03:38:47,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:38:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-02-15 03:38:47,563 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2022-02-15 03:38:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:47,563 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-02-15 03:38:47,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 03:38:47,564 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-02-15 03:38:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 03:38:47,565 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:47,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:47,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 03:38:47,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:47,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash -717013641, now seen corresponding path program 1 times [2022-02-15 03:38:47,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:47,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106210961] [2022-02-15 03:38:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:47,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:47,572 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:47,749 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:47,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106210961] [2022-02-15 03:38:47,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [106210961] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:47,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:47,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 03:38:47,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887051440] [2022-02-15 03:38:47,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:47,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 03:38:47,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 03:38:47,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 03:38:47,752 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 03:38:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:47,877 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2022-02-15 03:38:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 03:38:47,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 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 17 [2022-02-15 03:38:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:47,880 INFO L225 Difference]: With dead ends: 62 [2022-02-15 03:38:47,880 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 03:38:47,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 03:38:47,884 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:38:47,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 30 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 03:38:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 03:38:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2022-02-15 03:38:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:38:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-02-15 03:38:47,896 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2022-02-15 03:38:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:47,897 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-02-15 03:38:47,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 03:38:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-02-15 03:38:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 03:38:47,899 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:47,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:47,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 03:38:47,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash -442514949, now seen corresponding path program 1 times [2022-02-15 03:38:47,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:47,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547126098] [2022-02-15 03:38:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:47,916 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:38:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:47,917 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:48,410 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:48,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547126098] [2022-02-15 03:38:48,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1547126098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:48,411 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:48,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:38:48,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797965772] [2022-02-15 03:38:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:48,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:38:48,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:38:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:38:48,413 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 03:38:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:48,684 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2022-02-15 03:38:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 03:38:48,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 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 25 [2022-02-15 03:38:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:48,685 INFO L225 Difference]: With dead ends: 45 [2022-02-15 03:38:48,685 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 03:38:48,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-02-15 03:38:48,686 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:38:48,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 54 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 03:38:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 03:38:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2022-02-15 03:38:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 03:38:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-02-15 03:38:48,692 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2022-02-15 03:38:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:48,692 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-02-15 03:38:48,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 03:38:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-02-15 03:38:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 03:38:48,693 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:48,693 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:48,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 03:38:48,693 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash 321785045, now seen corresponding path program 1 times [2022-02-15 03:38:48,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:48,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967343429] [2022-02-15 03:38:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:48,695 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:38:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:48,696 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 03:38:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:48,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:48,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967343429] [2022-02-15 03:38:48,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [967343429] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:48,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:48,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 03:38:48,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836087297] [2022-02-15 03:38:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:48,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 03:38:48,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 03:38:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 03:38:48,811 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:38:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:49,019 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2022-02-15 03:38:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 03:38:49,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-02-15 03:38:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:49,020 INFO L225 Difference]: With dead ends: 94 [2022-02-15 03:38:49,020 INFO L226 Difference]: Without dead ends: 55 [2022-02-15 03:38:49,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:38:49,022 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 92 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:38:49,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 35 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 03:38:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-15 03:38:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2022-02-15 03:38:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 03:38:49,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-02-15 03:38:49,031 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 33 [2022-02-15 03:38:49,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:49,031 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-02-15 03:38:49,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:38:49,031 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-02-15 03:38:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 03:38:49,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:49,032 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:49,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 03:38:49,032 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 479826701, now seen corresponding path program 2 times [2022-02-15 03:38:49,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:49,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421385608] [2022-02-15 03:38:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:49,034 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:38:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:49,035 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:50,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:38:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:50,428 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:50,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421385608] [2022-02-15 03:38:50,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [421385608] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:50,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:50,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 03:38:50,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898617306] [2022-02-15 03:38:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:50,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 03:38:50,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 03:38:50,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:38:50,431 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 18 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:38:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:51,151 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2022-02-15 03:38:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 03:38:51,151 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 18 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-02-15 03:38:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:51,152 INFO L225 Difference]: With dead ends: 59 [2022-02-15 03:38:51,152 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 03:38:51,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2022-02-15 03:38:51,153 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 127 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:38:51,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 69 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 03:38:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 03:38:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2022-02-15 03:38:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:38:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-02-15 03:38:51,162 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 41 [2022-02-15 03:38:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:51,163 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-02-15 03:38:51,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 18 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:38:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-02-15 03:38:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 03:38:51,164 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:51,164 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:51,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 03:38:51,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:51,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1936282649, now seen corresponding path program 3 times [2022-02-15 03:38:51,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:51,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577975992] [2022-02-15 03:38:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:51,167 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:38:51,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:51,168 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:51,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:38:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 03:38:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:51,296 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:51,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577975992] [2022-02-15 03:38:51,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [577975992] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:51,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:51,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 03:38:51,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454833810] [2022-02-15 03:38:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:51,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 03:38:51,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:51,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 03:38:51,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-02-15 03:38:51,297 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 03:38:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:51,689 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2022-02-15 03:38:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 03:38:51,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2022-02-15 03:38:51,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:51,694 INFO L225 Difference]: With dead ends: 125 [2022-02-15 03:38:51,694 INFO L226 Difference]: Without dead ends: 69 [2022-02-15 03:38:51,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-02-15 03:38:51,696 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 106 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:38:51,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 63 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 03:38:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-15 03:38:51,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2022-02-15 03:38:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:38:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-02-15 03:38:51,733 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 49 [2022-02-15 03:38:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:51,734 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-02-15 03:38:51,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 03:38:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-02-15 03:38:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 03:38:51,744 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:51,744 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:51,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 03:38:51,744 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:51,745 INFO L85 PathProgramCache]: Analyzing trace with hash 267696619, now seen corresponding path program 4 times [2022-02-15 03:38:51,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:51,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500800671] [2022-02-15 03:38:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:51,747 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:38:51,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:51,749 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:53,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 03:38:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-15 03:38:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:53,608 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:53,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500800671] [2022-02-15 03:38:53,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [500800671] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:53,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:53,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 03:38:53,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909839336] [2022-02-15 03:38:53,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:53,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 03:38:53,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 03:38:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-02-15 03:38:53,609 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 03:38:55,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:55,896 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2022-02-15 03:38:55,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 03:38:55,897 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-02-15 03:38:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:55,912 INFO L225 Difference]: With dead ends: 108 [2022-02-15 03:38:55,912 INFO L226 Difference]: Without dead ends: 106 [2022-02-15 03:38:55,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=321, Invalid=2331, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 03:38:55,913 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 130 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:38:55,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 97 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 03:38:55,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-15 03:38:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2022-02-15 03:38:55,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 83 states have internal predecessors, (89), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:38:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2022-02-15 03:38:55,973 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 57 [2022-02-15 03:38:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:55,975 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2022-02-15 03:38:55,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 03:38:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2022-02-15 03:38:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 03:38:55,977 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:55,977 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:55,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 03:38:55,978 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash -440357820, now seen corresponding path program 5 times [2022-02-15 03:38:55,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:55,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286677102] [2022-02-15 03:38:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:55,995 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:38:55,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:55,996 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:56,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-15 03:38:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:56,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-15 03:38:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:56,296 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:56,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286677102] [2022-02-15 03:38:56,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1286677102] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:56,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:56,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:38:56,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963556317] [2022-02-15 03:38:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:56,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:38:56,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:38:56,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:38:56,298 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:38:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:56,858 INFO L93 Difference]: Finished difference Result 180 states and 202 transitions. [2022-02-15 03:38:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 03:38:56,859 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2022-02-15 03:38:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:56,860 INFO L225 Difference]: With dead ends: 180 [2022-02-15 03:38:56,860 INFO L226 Difference]: Without dead ends: 134 [2022-02-15 03:38:56,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:38:56,861 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 126 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:38:56,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 74 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 03:38:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-15 03:38:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 106. [2022-02-15 03:38:56,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 93 states have (on average 1.086021505376344) internal successors, (101), 94 states have internal predecessors, (101), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:38:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2022-02-15 03:38:56,889 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 60 [2022-02-15 03:38:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:56,889 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2022-02-15 03:38:56,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:38:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2022-02-15 03:38:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 03:38:56,890 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:56,890 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:56,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 03:38:56,890 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1329326907, now seen corresponding path program 6 times [2022-02-15 03:38:56,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:56,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366872003] [2022-02-15 03:38:56,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:56,892 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:38:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:56,893 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 03:38:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:57,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-15 03:38:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:38:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:57,148 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:57,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366872003] [2022-02-15 03:38:57,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1366872003] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:57,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:57,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:38:57,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339419123] [2022-02-15 03:38:57,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:57,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:38:57,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:57,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:38:57,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:38:57,150 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:38:57,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:38:57,787 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2022-02-15 03:38:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 03:38:57,788 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 65 [2022-02-15 03:38:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:38:57,788 INFO L225 Difference]: With dead ends: 162 [2022-02-15 03:38:57,788 INFO L226 Difference]: Without dead ends: 81 [2022-02-15 03:38:57,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-02-15 03:38:57,789 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 153 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:38:57,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 72 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 03:38:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-15 03:38:57,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2022-02-15 03:38:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 states have internal predecessors, (61), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:38:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-02-15 03:38:57,808 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 65 [2022-02-15 03:38:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:38:57,808 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-02-15 03:38:57,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:38:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-02-15 03:38:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 03:38:57,811 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:38:57,811 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:38:57,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 03:38:57,811 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:38:57,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:38:57,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1036675235, now seen corresponding path program 7 times [2022-02-15 03:38:57,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:38:57,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332962844] [2022-02-15 03:38:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:38:57,814 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:38:57,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:38:57,815 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:38:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:38:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-15 03:38:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:38:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:38:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:38:58,831 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:38:58,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332962844] [2022-02-15 03:38:58,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [332962844] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:38:58,832 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:38:58,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 03:38:58,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203749983] [2022-02-15 03:38:58,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:38:58,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 03:38:58,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:38:58,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 03:38:58,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:38:58,833 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 03:39:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:00,024 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2022-02-15 03:39:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 03:39:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 65 [2022-02-15 03:39:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:00,025 INFO L225 Difference]: With dead ends: 102 [2022-02-15 03:39:00,025 INFO L226 Difference]: Without dead ends: 100 [2022-02-15 03:39:00,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=321, Invalid=1485, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 03:39:00,026 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 150 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:00,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 81 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 03:39:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-15 03:39:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2022-02-15 03:39:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 states have internal predecessors, (67), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:39:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2022-02-15 03:39:00,045 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 65 [2022-02-15 03:39:00,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:00,045 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2022-02-15 03:39:00,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 03:39:00,046 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2022-02-15 03:39:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 03:39:00,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:00,046 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:00,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 03:39:00,046 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:00,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:00,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1312525181, now seen corresponding path program 8 times [2022-02-15 03:39:00,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:00,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942441614] [2022-02-15 03:39:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:00,048 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:00,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:00,049 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-15 03:39:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:39:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:39:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:01,585 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:01,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942441614] [2022-02-15 03:39:01,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [942441614] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:01,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:01,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 03:39:01,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222887829] [2022-02-15 03:39:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:01,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 03:39:01,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 03:39:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2022-02-15 03:39:01,587 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:39:03,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:03,981 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2022-02-15 03:39:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 03:39:03,983 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 73 [2022-02-15 03:39:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:03,984 INFO L225 Difference]: With dead ends: 147 [2022-02-15 03:39:03,984 INFO L226 Difference]: Without dead ends: 145 [2022-02-15 03:39:03,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=487, Invalid=2935, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 03:39:03,986 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 169 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:03,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 107 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 03:39:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-15 03:39:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 124. [2022-02-15 03:39:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 107 states have (on average 1.0654205607476634) internal successors, (114), 108 states have internal predecessors, (114), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-15 03:39:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2022-02-15 03:39:04,025 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 73 [2022-02-15 03:39:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:04,025 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2022-02-15 03:39:04,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 22 states have internal predecessors, (51), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:39:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2022-02-15 03:39:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 03:39:04,026 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:04,026 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:04,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 03:39:04,026 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -856577066, now seen corresponding path program 9 times [2022-02-15 03:39:04,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:04,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680482079] [2022-02-15 03:39:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:04,028 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:04,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:04,029 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:04,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-15 03:39:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-15 03:39:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-15 03:39:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:04,214 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:04,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680482079] [2022-02-15 03:39:04,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [680482079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:04,214 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:04,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 03:39:04,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424708800] [2022-02-15 03:39:04,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:04,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 03:39:04,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 03:39:04,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:39:04,215 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:39:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:05,014 INFO L93 Difference]: Finished difference Result 233 states and 260 transitions. [2022-02-15 03:39:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:39:05,014 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2022-02-15 03:39:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:05,016 INFO L225 Difference]: With dead ends: 233 [2022-02-15 03:39:05,016 INFO L226 Difference]: Without dead ends: 169 [2022-02-15 03:39:05,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-02-15 03:39:05,017 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 131 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:05,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 91 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 03:39:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-15 03:39:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2022-02-15 03:39:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 118 states have (on average 1.0677966101694916) internal successors, (126), 119 states have internal predecessors, (126), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-15 03:39:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2022-02-15 03:39:05,080 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 76 [2022-02-15 03:39:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:05,081 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2022-02-15 03:39:05,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:39:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2022-02-15 03:39:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 03:39:05,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:05,085 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:05,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 03:39:05,085 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:05,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1952987391, now seen corresponding path program 10 times [2022-02-15 03:39:05,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:05,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316668333] [2022-02-15 03:39:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:05,088 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:05,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:05,089 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:39:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:39:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:07,741 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:07,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316668333] [2022-02-15 03:39:07,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [316668333] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:07,741 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:07,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 03:39:07,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150087363] [2022-02-15 03:39:07,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:07,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 03:39:07,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 03:39:07,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-02-15 03:39:07,742 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:39:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:11,217 INFO L93 Difference]: Finished difference Result 256 states and 283 transitions. [2022-02-15 03:39:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 03:39:11,218 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 81 [2022-02-15 03:39:11,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:11,219 INFO L225 Difference]: With dead ends: 256 [2022-02-15 03:39:11,219 INFO L226 Difference]: Without dead ends: 254 [2022-02-15 03:39:11,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=687, Invalid=4715, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 03:39:11,221 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 243 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:11,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 124 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 03:39:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-02-15 03:39:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 182. [2022-02-15 03:39:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 161 states have (on average 1.0683229813664596) internal successors, (172), 163 states have internal predecessors, (172), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-15 03:39:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 199 transitions. [2022-02-15 03:39:11,297 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 199 transitions. Word has length 81 [2022-02-15 03:39:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:11,298 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 199 transitions. [2022-02-15 03:39:11,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:39:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 199 transitions. [2022-02-15 03:39:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 03:39:11,298 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:11,298 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:11,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 03:39:11,299 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash 234389082, now seen corresponding path program 11 times [2022-02-15 03:39:11,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:11,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289939048] [2022-02-15 03:39:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:11,300 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:11,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:11,301 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:11,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-15 03:39:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-15 03:39:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-15 03:39:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:11,622 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:11,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289939048] [2022-02-15 03:39:11,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1289939048] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:11,622 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:11,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 03:39:11,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963543380] [2022-02-15 03:39:11,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:11,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 03:39:11,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:11,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 03:39:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-02-15 03:39:11,624 INFO L87 Difference]: Start difference. First operand 182 states and 199 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:39:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:12,764 INFO L93 Difference]: Finished difference Result 368 states and 415 transitions. [2022-02-15 03:39:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 03:39:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2022-02-15 03:39:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:12,768 INFO L225 Difference]: With dead ends: 368 [2022-02-15 03:39:12,768 INFO L226 Difference]: Without dead ends: 287 [2022-02-15 03:39:12,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 03:39:12,769 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 196 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:12,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 106 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 03:39:12,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-02-15 03:39:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 199. [2022-02-15 03:39:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 178 states have (on average 1.0730337078651686) internal successors, (191), 180 states have internal predecessors, (191), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-15 03:39:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 218 transitions. [2022-02-15 03:39:12,880 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 218 transitions. Word has length 84 [2022-02-15 03:39:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:12,880 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 218 transitions. [2022-02-15 03:39:12,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:39:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 218 transitions. [2022-02-15 03:39:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 03:39:12,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:12,881 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:12,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 03:39:12,881 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:12,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:12,881 INFO L85 PathProgramCache]: Analyzing trace with hash 88433457, now seen corresponding path program 12 times [2022-02-15 03:39:12,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:12,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613253675] [2022-02-15 03:39:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:12,882 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:12,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:12,883 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-15 03:39:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:39:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:39:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:39:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:13,091 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:13,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613253675] [2022-02-15 03:39:13,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [613253675] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:13,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:13,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 03:39:13,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524718275] [2022-02-15 03:39:13,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:13,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 03:39:13,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 03:39:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-02-15 03:39:13,092 INFO L87 Difference]: Start difference. First operand 199 states and 218 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:39:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:13,859 INFO L93 Difference]: Finished difference Result 278 states and 301 transitions. [2022-02-15 03:39:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 03:39:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 89 [2022-02-15 03:39:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:13,862 INFO L225 Difference]: With dead ends: 278 [2022-02-15 03:39:13,862 INFO L226 Difference]: Without dead ends: 164 [2022-02-15 03:39:13,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:39:13,866 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 283 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:13,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 82 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 03:39:13,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-15 03:39:13,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 144. [2022-02-15 03:39:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 128 states have (on average 1.0625) internal successors, (136), 129 states have internal predecessors, (136), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-15 03:39:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2022-02-15 03:39:13,935 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 89 [2022-02-15 03:39:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:13,935 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2022-02-15 03:39:13,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:39:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2022-02-15 03:39:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 03:39:13,936 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:13,936 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:13,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 03:39:13,936 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 283880411, now seen corresponding path program 13 times [2022-02-15 03:39:13,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:13,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988332167] [2022-02-15 03:39:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:13,938 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:13,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:13,939 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:39:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:39:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:16,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:39:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:16,639 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:16,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988332167] [2022-02-15 03:39:16,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1988332167] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:16,639 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:16,639 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 03:39:16,639 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196877382] [2022-02-15 03:39:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:16,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 03:39:16,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 03:39:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2022-02-15 03:39:16,640 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand has 31 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:39:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:20,363 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2022-02-15 03:39:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 03:39:20,364 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 89 [2022-02-15 03:39:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:20,365 INFO L225 Difference]: With dead ends: 192 [2022-02-15 03:39:20,365 INFO L226 Difference]: Without dead ends: 190 [2022-02-15 03:39:20,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=709, Invalid=4991, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 03:39:20,366 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 241 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:20,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 96 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 03:39:20,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-02-15 03:39:20,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 156. [2022-02-15 03:39:20,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.0583941605839415) internal successors, (145), 138 states have internal predecessors, (145), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-02-15 03:39:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2022-02-15 03:39:20,446 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 89 [2022-02-15 03:39:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:20,447 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2022-02-15 03:39:20,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:39:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2022-02-15 03:39:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 03:39:20,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:20,448 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:20,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 03:39:20,448 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:20,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1546174009, now seen corresponding path program 14 times [2022-02-15 03:39:20,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:20,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192613458] [2022-02-15 03:39:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:20,450 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:20,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:20,452 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:39:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:23,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:39:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:23,009 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:23,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192613458] [2022-02-15 03:39:23,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [192613458] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:23,009 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:23,009 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 03:39:23,009 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423405424] [2022-02-15 03:39:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:23,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 03:39:23,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 03:39:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2022-02-15 03:39:23,010 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand has 31 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:39:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:26,532 INFO L93 Difference]: Finished difference Result 266 states and 293 transitions. [2022-02-15 03:39:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 03:39:26,532 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 89 [2022-02-15 03:39:26,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:26,536 INFO L225 Difference]: With dead ends: 266 [2022-02-15 03:39:26,537 INFO L226 Difference]: Without dead ends: 264 [2022-02-15 03:39:26,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1963 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=727, Invalid=5753, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 03:39:26,539 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 217 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:26,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 119 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 03:39:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-02-15 03:39:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 212. [2022-02-15 03:39:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 188 states have (on average 1.0585106382978724) internal successors, (199), 190 states have internal predecessors, (199), 16 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-15 03:39:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 230 transitions. [2022-02-15 03:39:26,673 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 230 transitions. Word has length 89 [2022-02-15 03:39:26,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:26,673 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 230 transitions. [2022-02-15 03:39:26,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:39:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 230 transitions. [2022-02-15 03:39:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-15 03:39:26,674 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:26,674 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:26,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 03:39:26,675 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash -173208430, now seen corresponding path program 15 times [2022-02-15 03:39:26,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:26,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081816411] [2022-02-15 03:39:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:26,676 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:26,678 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-15 03:39:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-15 03:39:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:26,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-15 03:39:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:26,961 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:26,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081816411] [2022-02-15 03:39:26,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2081816411] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:26,961 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:26,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 03:39:26,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401461432] [2022-02-15 03:39:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:26,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 03:39:26,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 03:39:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:39:26,962 INFO L87 Difference]: Start difference. First operand 212 states and 230 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:39:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:28,544 INFO L93 Difference]: Finished difference Result 426 states and 477 transitions. [2022-02-15 03:39:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 03:39:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 92 [2022-02-15 03:39:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:28,546 INFO L225 Difference]: With dead ends: 426 [2022-02-15 03:39:28,546 INFO L226 Difference]: Without dead ends: 331 [2022-02-15 03:39:28,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1437, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 03:39:28,547 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 193 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:28,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 123 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 03:39:28,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-02-15 03:39:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 229. [2022-02-15 03:39:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 205 states have (on average 1.0634146341463415) internal successors, (218), 207 states have internal predecessors, (218), 16 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-15 03:39:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 249 transitions. [2022-02-15 03:39:28,681 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 249 transitions. Word has length 92 [2022-02-15 03:39:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:28,681 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 249 transitions. [2022-02-15 03:39:28,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:39:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 249 transitions. [2022-02-15 03:39:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 03:39:28,682 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:28,688 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:28,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 03:39:28,688 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash -947000557, now seen corresponding path program 16 times [2022-02-15 03:39:28,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:28,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283730595] [2022-02-15 03:39:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:28,691 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:28,692 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:39:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:30,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:30,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:39:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:39:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:30,883 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:30,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283730595] [2022-02-15 03:39:30,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1283730595] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:30,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:30,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 03:39:30,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769056393] [2022-02-15 03:39:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:30,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 03:39:30,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:30,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 03:39:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2022-02-15 03:39:30,885 INFO L87 Difference]: Start difference. First operand 229 states and 249 transitions. Second operand has 32 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:39:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:34,617 INFO L93 Difference]: Finished difference Result 341 states and 371 transitions. [2022-02-15 03:39:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 03:39:34,617 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 97 [2022-02-15 03:39:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:34,619 INFO L225 Difference]: With dead ends: 341 [2022-02-15 03:39:34,619 INFO L226 Difference]: Without dead ends: 339 [2022-02-15 03:39:34,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 16 SyntacticMatches, 7 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=892, Invalid=6248, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 03:39:34,621 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 280 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:34,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 120 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 03:39:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-02-15 03:39:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 225. [2022-02-15 03:39:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 202 states have (on average 1.0643564356435644) internal successors, (215), 204 states have internal predecessors, (215), 15 states have call successors, (15), 9 states have call predecessors, (15), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-15 03:39:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 244 transitions. [2022-02-15 03:39:34,756 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 244 transitions. Word has length 97 [2022-02-15 03:39:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:34,756 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 244 transitions. [2022-02-15 03:39:34,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 30 states have internal predecessors, (76), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:39:34,757 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 244 transitions. [2022-02-15 03:39:34,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 03:39:34,757 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:34,757 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:34,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 03:39:34,758 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:34,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash -776451267, now seen corresponding path program 17 times [2022-02-15 03:39:34,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:34,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617972747] [2022-02-15 03:39:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:34,759 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:34,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:34,760 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:37,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:39:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:39:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:37,340 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:37,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617972747] [2022-02-15 03:39:37,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1617972747] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:37,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:37,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 03:39:37,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793084918] [2022-02-15 03:39:37,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:37,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 03:39:37,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 03:39:37,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 03:39:37,342 INFO L87 Difference]: Start difference. First operand 225 states and 244 transitions. Second operand has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:39:43,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:43,248 INFO L93 Difference]: Finished difference Result 421 states and 464 transitions. [2022-02-15 03:39:43,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 03:39:43,249 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 97 [2022-02-15 03:39:43,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:43,251 INFO L225 Difference]: With dead ends: 421 [2022-02-15 03:39:43,251 INFO L226 Difference]: Without dead ends: 419 [2022-02-15 03:39:43,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1038, Invalid=7704, Unknown=0, NotChecked=0, Total=8742 [2022-02-15 03:39:43,253 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 292 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:43,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 125 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2557 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 03:39:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-02-15 03:39:43,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 278. [2022-02-15 03:39:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 252 states have (on average 1.0634920634920635) internal successors, (268), 255 states have internal predecessors, (268), 18 states have call successors, (18), 9 states have call predecessors, (18), 7 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-15 03:39:43,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 303 transitions. [2022-02-15 03:39:43,443 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 303 transitions. Word has length 97 [2022-02-15 03:39:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:43,444 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 303 transitions. [2022-02-15 03:39:43,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 states have internal predecessors, (69), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:39:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 303 transitions. [2022-02-15 03:39:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-15 03:39:43,445 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:43,445 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:43,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 03:39:43,445 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash 215560342, now seen corresponding path program 18 times [2022-02-15 03:39:43,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:43,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532055724] [2022-02-15 03:39:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:43,451 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:43,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:43,454 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-15 03:39:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-15 03:39:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-15 03:39:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:43,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:43,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532055724] [2022-02-15 03:39:43,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1532055724] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:43,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:43,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 03:39:43,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627025605] [2022-02-15 03:39:43,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:43,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 03:39:43,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 03:39:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:39:43,813 INFO L87 Difference]: Start difference. First operand 278 states and 303 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:39:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:45,608 INFO L93 Difference]: Finished difference Result 593 states and 668 transitions. [2022-02-15 03:39:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 03:39:45,608 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2022-02-15 03:39:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:45,610 INFO L225 Difference]: With dead ends: 593 [2022-02-15 03:39:45,610 INFO L226 Difference]: Without dead ends: 489 [2022-02-15 03:39:45,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1841, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 03:39:45,611 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 261 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:45,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 128 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 03:39:45,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-02-15 03:39:45,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 301. [2022-02-15 03:39:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 275 states have (on average 1.069090909090909) internal successors, (294), 278 states have internal predecessors, (294), 18 states have call successors, (18), 9 states have call predecessors, (18), 7 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-15 03:39:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 329 transitions. [2022-02-15 03:39:45,852 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 329 transitions. Word has length 100 [2022-02-15 03:39:45,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:45,852 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 329 transitions. [2022-02-15 03:39:45,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:39:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 329 transitions. [2022-02-15 03:39:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 03:39:45,853 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:45,853 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:45,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 03:39:45,853 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:45,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1108674447, now seen corresponding path program 19 times [2022-02-15 03:39:45,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:45,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601597488] [2022-02-15 03:39:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:45,856 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:45,858 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:39:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:39:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:39:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:39:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:46,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:39:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:46,082 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:46,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601597488] [2022-02-15 03:39:46,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1601597488] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:46,082 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:46,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 03:39:46,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652954616] [2022-02-15 03:39:46,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:46,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 03:39:46,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 03:39:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-02-15 03:39:46,083 INFO L87 Difference]: Start difference. First operand 301 states and 329 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:39:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:47,303 INFO L93 Difference]: Finished difference Result 428 states and 463 transitions. [2022-02-15 03:39:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 03:39:47,303 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 105 [2022-02-15 03:39:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:47,306 INFO L225 Difference]: With dead ends: 428 [2022-02-15 03:39:47,306 INFO L226 Difference]: Without dead ends: 289 [2022-02-15 03:39:47,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2022-02-15 03:39:47,311 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:47,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 96 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 03:39:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-02-15 03:39:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 235. [2022-02-15 03:39:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 214 states have (on average 1.060747663551402) internal successors, (227), 216 states have internal predecessors, (227), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-15 03:39:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 254 transitions. [2022-02-15 03:39:47,510 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 254 transitions. Word has length 105 [2022-02-15 03:39:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:47,511 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 254 transitions. [2022-02-15 03:39:47,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:39:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 254 transitions. [2022-02-15 03:39:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 03:39:47,512 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:47,512 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:47,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 03:39:47,512 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash 55418349, now seen corresponding path program 20 times [2022-02-15 03:39:47,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:47,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643545385] [2022-02-15 03:39:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:47,513 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:47,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:47,515 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:49,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:39:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:39:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:39:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:49,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:39:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:49,352 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:49,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643545385] [2022-02-15 03:39:49,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1643545385] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:49,353 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:49,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 03:39:49,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386116522] [2022-02-15 03:39:49,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:49,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 03:39:49,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:49,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 03:39:49,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 03:39:49,354 INFO L87 Difference]: Start difference. First operand 235 states and 254 transitions. Second operand has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:39:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:52,973 INFO L93 Difference]: Finished difference Result 277 states and 298 transitions. [2022-02-15 03:39:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 03:39:52,974 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 105 [2022-02-15 03:39:52,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:52,976 INFO L225 Difference]: With dead ends: 277 [2022-02-15 03:39:52,976 INFO L226 Difference]: Without dead ends: 275 [2022-02-15 03:39:52,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=463, Invalid=4367, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 03:39:52,979 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 214 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:52,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 146 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 03:39:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-02-15 03:39:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 247. [2022-02-15 03:39:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 223 states have (on average 1.0582959641255605) internal successors, (236), 225 states have internal predecessors, (236), 16 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-15 03:39:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 267 transitions. [2022-02-15 03:39:53,154 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 267 transitions. Word has length 105 [2022-02-15 03:39:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:53,154 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 267 transitions. [2022-02-15 03:39:53,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:39:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 267 transitions. [2022-02-15 03:39:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 03:39:53,155 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:53,155 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:53,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 03:39:53,155 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1079129111, now seen corresponding path program 21 times [2022-02-15 03:39:53,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:53,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477250906] [2022-02-15 03:39:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:53,157 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:53,158 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:39:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:54,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:39:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:39:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:39:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:39:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:39:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:39:54,959 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:39:54,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477250906] [2022-02-15 03:39:54,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1477250906] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:39:54,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:39:54,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 03:39:54,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441125032] [2022-02-15 03:39:54,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:39:54,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 03:39:54,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:39:54,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 03:39:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 03:39:54,960 INFO L87 Difference]: Start difference. First operand 247 states and 267 transitions. Second operand has 34 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:39:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:39:59,249 INFO L93 Difference]: Finished difference Result 355 states and 383 transitions. [2022-02-15 03:39:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 03:39:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 105 [2022-02-15 03:39:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:39:59,250 INFO L225 Difference]: With dead ends: 355 [2022-02-15 03:39:59,250 INFO L226 Difference]: Without dead ends: 353 [2022-02-15 03:39:59,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=913, Invalid=6569, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 03:39:59,252 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 264 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:39:59,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 99 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 03:39:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-15 03:39:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 243. [2022-02-15 03:39:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 220 states have (on average 1.059090909090909) internal successors, (233), 222 states have internal predecessors, (233), 15 states have call successors, (15), 9 states have call predecessors, (15), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-15 03:39:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 262 transitions. [2022-02-15 03:39:59,434 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 262 transitions. Word has length 105 [2022-02-15 03:39:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:39:59,434 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 262 transitions. [2022-02-15 03:39:59,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:39:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 262 transitions. [2022-02-15 03:39:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 03:39:59,435 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:39:59,435 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:39:59,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 03:39:59,435 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:39:59,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:39:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1253776651, now seen corresponding path program 22 times [2022-02-15 03:39:59,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:39:59,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854555260] [2022-02-15 03:39:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:39:59,437 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:39:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:39:59,438 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:39:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:01,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:40:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:40:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:40:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:01,232 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:01,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854555260] [2022-02-15 03:40:01,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1854555260] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:01,232 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:01,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 03:40:01,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356961630] [2022-02-15 03:40:01,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:01,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 03:40:01,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 03:40:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2022-02-15 03:40:01,233 INFO L87 Difference]: Start difference. First operand 243 states and 262 transitions. Second operand has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 30 states have internal predecessors, (89), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:40:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:04,545 INFO L93 Difference]: Finished difference Result 438 states and 493 transitions. [2022-02-15 03:40:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 03:40:04,546 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 30 states have internal predecessors, (89), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 105 [2022-02-15 03:40:04,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:04,547 INFO L225 Difference]: With dead ends: 438 [2022-02-15 03:40:04,547 INFO L226 Difference]: Without dead ends: 436 [2022-02-15 03:40:04,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=811, Invalid=5195, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 03:40:04,548 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 396 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:04,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 120 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 03:40:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-02-15 03:40:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 243. [2022-02-15 03:40:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 220 states have (on average 1.059090909090909) internal successors, (233), 222 states have internal predecessors, (233), 15 states have call successors, (15), 9 states have call predecessors, (15), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-15 03:40:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 262 transitions. [2022-02-15 03:40:04,725 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 262 transitions. Word has length 105 [2022-02-15 03:40:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:04,725 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 262 transitions. [2022-02-15 03:40:04,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 30 states have internal predecessors, (89), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 03:40:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 262 transitions. [2022-02-15 03:40:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-15 03:40:04,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:04,726 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:04,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 03:40:04,727 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash -410921273, now seen corresponding path program 23 times [2022-02-15 03:40:04,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:04,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473636032] [2022-02-15 03:40:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:04,728 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:04,729 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-02-15 03:40:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:40:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:04,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:40:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:40:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:40:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:40:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:05,000 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:05,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473636032] [2022-02-15 03:40:05,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [473636032] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:05,000 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:05,000 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 03:40:05,000 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387507028] [2022-02-15 03:40:05,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:05,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 03:40:05,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:05,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 03:40:05,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:40:05,002 INFO L87 Difference]: Start difference. First operand 243 states and 262 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:40:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:06,614 INFO L93 Difference]: Finished difference Result 354 states and 381 transitions. [2022-02-15 03:40:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:40:06,615 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 113 [2022-02-15 03:40:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:06,615 INFO L225 Difference]: With dead ends: 354 [2022-02-15 03:40:06,615 INFO L226 Difference]: Without dead ends: 210 [2022-02-15 03:40:06,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 03:40:06,616 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 444 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:06,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 110 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 03:40:06,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-02-15 03:40:06,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 178. [2022-02-15 03:40:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 160 states have (on average 1.05) internal successors, (168), 161 states have internal predecessors, (168), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-15 03:40:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 189 transitions. [2022-02-15 03:40:06,729 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 189 transitions. Word has length 113 [2022-02-15 03:40:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:06,730 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 189 transitions. [2022-02-15 03:40:06,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:40:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 189 transitions. [2022-02-15 03:40:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-15 03:40:06,730 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:06,730 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:06,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 03:40:06,731 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1288348401, now seen corresponding path program 24 times [2022-02-15 03:40:06,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:06,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013598377] [2022-02-15 03:40:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:06,733 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:06,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:06,736 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:40:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:40:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:40:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:08,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:40:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:40:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:08,640 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:08,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013598377] [2022-02-15 03:40:08,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2013598377] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:08,640 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:08,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 03:40:08,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417469114] [2022-02-15 03:40:08,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:08,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 03:40:08,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:08,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 03:40:08,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 03:40:08,642 INFO L87 Difference]: Start difference. First operand 178 states and 189 transitions. Second operand has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:40:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:13,257 INFO L93 Difference]: Finished difference Result 240 states and 257 transitions. [2022-02-15 03:40:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 03:40:13,258 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 113 [2022-02-15 03:40:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:13,259 INFO L225 Difference]: With dead ends: 240 [2022-02-15 03:40:13,259 INFO L226 Difference]: Without dead ends: 238 [2022-02-15 03:40:13,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=777, Invalid=6533, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 03:40:13,260 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 207 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:13,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 124 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 03:40:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-02-15 03:40:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 190. [2022-02-15 03:40:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 169 states have (on average 1.047337278106509) internal successors, (177), 170 states have internal predecessors, (177), 13 states have call successors, (13), 9 states have call predecessors, (13), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-15 03:40:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 202 transitions. [2022-02-15 03:40:13,422 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 202 transitions. Word has length 113 [2022-02-15 03:40:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:13,422 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 202 transitions. [2022-02-15 03:40:13,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:40:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 202 transitions. [2022-02-15 03:40:13,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-15 03:40:13,423 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:13,423 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:13,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 03:40:13,423 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:13,423 INFO L85 PathProgramCache]: Analyzing trace with hash -964193329, now seen corresponding path program 25 times [2022-02-15 03:40:13,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:13,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887984249] [2022-02-15 03:40:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:13,425 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:13,426 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:16,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:40:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:16,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:40:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:16,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:40:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:40:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:16,747 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:16,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887984249] [2022-02-15 03:40:16,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [887984249] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:16,747 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:16,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 03:40:16,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432044995] [2022-02-15 03:40:16,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:16,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 03:40:16,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:16,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 03:40:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 03:40:16,749 INFO L87 Difference]: Start difference. First operand 190 states and 202 transitions. Second operand has 39 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:40:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:21,609 INFO L93 Difference]: Finished difference Result 322 states and 350 transitions. [2022-02-15 03:40:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 03:40:21,609 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 113 [2022-02-15 03:40:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:21,610 INFO L225 Difference]: With dead ends: 322 [2022-02-15 03:40:21,610 INFO L226 Difference]: Without dead ends: 320 [2022-02-15 03:40:21,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2456 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=834, Invalid=7356, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 03:40:21,611 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 265 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:21,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 126 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2802 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 03:40:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-02-15 03:40:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 256. [2022-02-15 03:40:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 230 states have (on average 1.0478260869565217) internal successors, (241), 232 states have internal predecessors, (241), 17 states have call successors, (17), 10 states have call predecessors, (17), 8 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-02-15 03:40:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2022-02-15 03:40:21,827 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 113 [2022-02-15 03:40:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:21,827 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2022-02-15 03:40:21,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:40:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2022-02-15 03:40:21,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-15 03:40:21,828 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:21,828 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:21,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 03:40:21,828 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:21,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1068718296, now seen corresponding path program 26 times [2022-02-15 03:40:21,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:21,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958608077] [2022-02-15 03:40:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:21,830 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:21,831 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:22,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-15 03:40:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-15 03:40:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-15 03:40:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-15 03:40:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:22,202 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:22,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958608077] [2022-02-15 03:40:22,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1958608077] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:22,203 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:22,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 03:40:22,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344731560] [2022-02-15 03:40:22,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:22,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 03:40:22,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:22,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 03:40:22,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2022-02-15 03:40:22,204 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:40:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:24,411 INFO L93 Difference]: Finished difference Result 510 states and 565 transitions. [2022-02-15 03:40:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 03:40:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 116 [2022-02-15 03:40:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:24,414 INFO L225 Difference]: With dead ends: 510 [2022-02-15 03:40:24,414 INFO L226 Difference]: Without dead ends: 403 [2022-02-15 03:40:24,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=255, Invalid=2295, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 03:40:24,418 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 265 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3165 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 3165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:24,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 142 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 3165 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 03:40:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-02-15 03:40:24,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 273. [2022-02-15 03:40:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 247 states have (on average 1.0526315789473684) internal successors, (260), 249 states have internal predecessors, (260), 17 states have call successors, (17), 10 states have call predecessors, (17), 8 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-02-15 03:40:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 293 transitions. [2022-02-15 03:40:24,677 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 293 transitions. Word has length 116 [2022-02-15 03:40:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:24,677 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 293 transitions. [2022-02-15 03:40:24,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:40:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 293 transitions. [2022-02-15 03:40:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 03:40:24,678 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:24,678 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:24,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 03:40:24,678 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:24,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash 188454859, now seen corresponding path program 27 times [2022-02-15 03:40:24,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:24,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187861791] [2022-02-15 03:40:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:24,679 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:24,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:24,681 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:27,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:40:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:27,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:40:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:40:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:27,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:40:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:40:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:40:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:27,346 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:27,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187861791] [2022-02-15 03:40:27,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1187861791] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:27,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:27,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 03:40:27,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110635160] [2022-02-15 03:40:27,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:27,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 03:40:27,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 03:40:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1212, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 03:40:27,347 INFO L87 Difference]: Start difference. First operand 273 states and 293 transitions. Second operand has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 35 states have internal predecessors, (87), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:40:32,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:32,218 INFO L93 Difference]: Finished difference Result 319 states and 341 transitions. [2022-02-15 03:40:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 03:40:32,218 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 35 states have internal predecessors, (87), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 121 [2022-02-15 03:40:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:32,226 INFO L225 Difference]: With dead ends: 319 [2022-02-15 03:40:32,226 INFO L226 Difference]: Without dead ends: 317 [2022-02-15 03:40:32,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1794 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=570, Invalid=6236, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 03:40:32,235 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 213 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:32,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 137 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 03:40:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-02-15 03:40:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 285. [2022-02-15 03:40:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 256 states have (on average 1.05078125) internal successors, (269), 258 states have internal predecessors, (269), 19 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-02-15 03:40:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 306 transitions. [2022-02-15 03:40:32,523 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 306 transitions. Word has length 121 [2022-02-15 03:40:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:32,523 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 306 transitions. [2022-02-15 03:40:32,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 35 states have internal predecessors, (87), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:40:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 306 transitions. [2022-02-15 03:40:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 03:40:32,524 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:32,524 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:32,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 03:40:32,524 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:32,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1000289623, now seen corresponding path program 28 times [2022-02-15 03:40:32,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:32,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311304426] [2022-02-15 03:40:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:32,526 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:32,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:32,528 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:40:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:40:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:40:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:40:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:35,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:40:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:35,090 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:35,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311304426] [2022-02-15 03:40:35,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1311304426] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:35,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:35,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 03:40:35,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756031470] [2022-02-15 03:40:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:35,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 03:40:35,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:35,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 03:40:35,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1117, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 03:40:35,092 INFO L87 Difference]: Start difference. First operand 285 states and 306 transitions. Second operand has 36 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 34 states have internal predecessors, (95), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:40:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:38,578 INFO L93 Difference]: Finished difference Result 387 states and 417 transitions. [2022-02-15 03:40:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 03:40:38,578 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 34 states have internal predecessors, (95), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 121 [2022-02-15 03:40:38,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:38,580 INFO L225 Difference]: With dead ends: 387 [2022-02-15 03:40:38,580 INFO L226 Difference]: Without dead ends: 385 [2022-02-15 03:40:38,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2007 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=760, Invalid=6212, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 03:40:38,580 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 239 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:38,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 127 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 03:40:38,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-02-15 03:40:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 281. [2022-02-15 03:40:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 253 states have (on average 1.051383399209486) internal successors, (266), 255 states have internal predecessors, (266), 18 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-15 03:40:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 301 transitions. [2022-02-15 03:40:38,848 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 301 transitions. Word has length 121 [2022-02-15 03:40:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:38,848 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 301 transitions. [2022-02-15 03:40:38,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 34 states have internal predecessors, (95), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:40:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 301 transitions. [2022-02-15 03:40:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 03:40:38,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:38,849 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:38,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 03:40:38,850 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1649839699, now seen corresponding path program 29 times [2022-02-15 03:40:38,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:38,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683690857] [2022-02-15 03:40:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:38,852 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:38,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:38,854 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:40:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:40:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:40:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:40:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:43,269 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:43,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683690857] [2022-02-15 03:40:43,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [683690857] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:43,270 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:43,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 03:40:43,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553491004] [2022-02-15 03:40:43,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:43,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 03:40:43,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:43,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 03:40:43,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1997, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 03:40:43,271 INFO L87 Difference]: Start difference. First operand 281 states and 301 transitions. Second operand has 47 states, 46 states have (on average 2.1739130434782608) internal successors, (100), 45 states have internal predecessors, (100), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:40:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:50,930 INFO L93 Difference]: Finished difference Result 513 states and 559 transitions. [2022-02-15 03:40:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 03:40:50,931 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.1739130434782608) internal successors, (100), 45 states have internal predecessors, (100), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 121 [2022-02-15 03:40:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:50,932 INFO L225 Difference]: With dead ends: 513 [2022-02-15 03:40:50,932 INFO L226 Difference]: Without dead ends: 511 [2022-02-15 03:40:50,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4115 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1155, Invalid=12651, Unknown=0, NotChecked=0, Total=13806 [2022-02-15 03:40:50,933 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 345 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 4440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 4096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:50,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 154 Invalid, 4440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 4096 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-15 03:40:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-02-15 03:40:51,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 348. [2022-02-15 03:40:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 316 states have (on average 1.0506329113924051) internal successors, (332), 319 states have internal predecessors, (332), 22 states have call successors, (22), 11 states have call predecessors, (22), 9 states have return successors, (21), 17 states have call predecessors, (21), 21 states have call successors, (21) [2022-02-15 03:40:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 375 transitions. [2022-02-15 03:40:51,286 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 375 transitions. Word has length 121 [2022-02-15 03:40:51,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:51,286 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 375 transitions. [2022-02-15 03:40:51,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.1739130434782608) internal successors, (100), 45 states have internal predecessors, (100), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:40:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 375 transitions. [2022-02-15 03:40:51,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-15 03:40:51,288 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:51,288 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:51,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 03:40:51,288 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1730361516, now seen corresponding path program 30 times [2022-02-15 03:40:51,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:51,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851550079] [2022-02-15 03:40:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:51,290 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:51,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:51,291 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:51,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-15 03:40:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-15 03:40:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:51,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-15 03:40:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-15 03:40:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:51,713 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:51,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851550079] [2022-02-15 03:40:51,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [851550079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:51,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:51,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 03:40:51,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671714169] [2022-02-15 03:40:51,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:51,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 03:40:51,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:51,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 03:40:51,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:40:51,714 INFO L87 Difference]: Start difference. First operand 348 states and 375 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:40:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:54,858 INFO L93 Difference]: Finished difference Result 735 states and 819 transitions. [2022-02-15 03:40:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 03:40:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 124 [2022-02-15 03:40:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:54,866 INFO L225 Difference]: With dead ends: 735 [2022-02-15 03:40:54,866 INFO L226 Difference]: Without dead ends: 603 [2022-02-15 03:40:54,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 03:40:54,867 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 263 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4146 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 4433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 4146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:54,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 172 Invalid, 4433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 4146 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 03:40:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-02-15 03:40:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 371. [2022-02-15 03:40:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 339 states have (on average 1.056047197640118) internal successors, (358), 342 states have internal predecessors, (358), 22 states have call successors, (22), 11 states have call predecessors, (22), 9 states have return successors, (21), 17 states have call predecessors, (21), 21 states have call successors, (21) [2022-02-15 03:40:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 401 transitions. [2022-02-15 03:40:55,319 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 401 transitions. Word has length 124 [2022-02-15 03:40:55,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:55,319 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 401 transitions. [2022-02-15 03:40:55,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:40:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 401 transitions. [2022-02-15 03:40:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-15 03:40:55,332 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:55,332 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:55,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 03:40:55,332 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:55,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash -708898139, now seen corresponding path program 31 times [2022-02-15 03:40:55,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:55,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618116124] [2022-02-15 03:40:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:55,334 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:55,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:55,335 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:40:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-02-15 03:40:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:40:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:40:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:40:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:40:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:40:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:40:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:40:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:40:55,681 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:40:55,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618116124] [2022-02-15 03:40:55,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1618116124] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:40:55,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:40:55,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 03:40:55,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626130113] [2022-02-15 03:40:55,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:40:55,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 03:40:55,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:40:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 03:40:55,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2022-02-15 03:40:55,682 INFO L87 Difference]: Start difference. First operand 371 states and 401 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-15 03:40:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:40:57,623 INFO L93 Difference]: Finished difference Result 530 states and 569 transitions. [2022-02-15 03:40:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:40:57,624 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 129 [2022-02-15 03:40:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:40:57,625 INFO L225 Difference]: With dead ends: 530 [2022-02-15 03:40:57,625 INFO L226 Difference]: Without dead ends: 357 [2022-02-15 03:40:57,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=1169, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 03:40:57,626 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 540 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:40:57,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 129 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 03:40:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-02-15 03:40:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 287. [2022-02-15 03:40:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 262 states have (on average 1.049618320610687) internal successors, (275), 264 states have internal predecessors, (275), 17 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-02-15 03:40:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 308 transitions. [2022-02-15 03:40:57,897 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 308 transitions. Word has length 129 [2022-02-15 03:40:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:40:57,897 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 308 transitions. [2022-02-15 03:40:57,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-15 03:40:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 308 transitions. [2022-02-15 03:40:57,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-15 03:40:57,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:40:57,898 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:40:57,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 03:40:57,899 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:40:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:40:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1964341373, now seen corresponding path program 32 times [2022-02-15 03:40:57,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:40:57,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391248048] [2022-02-15 03:40:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:40:57,900 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:40:57,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:40:57,902 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:40:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:41:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:41:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:41:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:41:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:41:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:41:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:41:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:41:00,458 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:41:00,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391248048] [2022-02-15 03:41:00,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [391248048] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:41:00,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:41:00,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 03:41:00,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400629699] [2022-02-15 03:41:00,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:41:00,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 03:41:00,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:41:00,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 03:41:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 03:41:00,460 INFO L87 Difference]: Start difference. First operand 287 states and 308 transitions. Second operand has 35 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 33 states have internal predecessors, (98), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:41:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:41:03,964 INFO L93 Difference]: Finished difference Result 351 states and 377 transitions. [2022-02-15 03:41:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 03:41:03,965 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 33 states have internal predecessors, (98), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 129 [2022-02-15 03:41:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:41:03,966 INFO L225 Difference]: With dead ends: 351 [2022-02-15 03:41:03,966 INFO L226 Difference]: Without dead ends: 349 [2022-02-15 03:41:03,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=688, Invalid=5792, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 03:41:03,967 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 243 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:41:03,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 120 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 03:41:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-02-15 03:41:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 299. [2022-02-15 03:41:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 271 states have (on average 1.047970479704797) internal successors, (284), 273 states have internal predecessors, (284), 19 states have call successors, (19), 10 states have call predecessors, (19), 8 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-02-15 03:41:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 321 transitions. [2022-02-15 03:41:04,285 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 321 transitions. Word has length 129 [2022-02-15 03:41:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:41:04,286 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 321 transitions. [2022-02-15 03:41:04,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 33 states have internal predecessors, (98), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:41:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 321 transitions. [2022-02-15 03:41:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-15 03:41:04,299 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:41:04,300 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:41:04,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 03:41:04,300 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:41:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:41:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash -102825683, now seen corresponding path program 33 times [2022-02-15 03:41:04,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:41:04,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597584199] [2022-02-15 03:41:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:41:04,301 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:41:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:41:04,303 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:41:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:41:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:41:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:41:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:06,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:41:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:06,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:41:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:41:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:41:06,453 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:41:06,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597584199] [2022-02-15 03:41:06,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1597584199] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:41:06,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:41:06,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 03:41:06,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623159648] [2022-02-15 03:41:06,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:41:06,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 03:41:06,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:41:06,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 03:41:06,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 03:41:06,455 INFO L87 Difference]: Start difference. First operand 299 states and 321 transitions. Second operand has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:41:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:41:10,676 INFO L93 Difference]: Finished difference Result 401 states and 430 transitions. [2022-02-15 03:41:10,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 03:41:10,677 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 129 [2022-02-15 03:41:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:41:10,683 INFO L225 Difference]: With dead ends: 401 [2022-02-15 03:41:10,683 INFO L226 Difference]: Without dead ends: 399 [2022-02-15 03:41:10,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=715, Invalid=6767, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 03:41:10,684 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 223 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 3492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:41:10,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 173 Invalid, 3492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 03:41:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-15 03:41:10,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 295. [2022-02-15 03:41:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.0485074626865671) internal successors, (281), 270 states have internal predecessors, (281), 18 states have call successors, (18), 10 states have call predecessors, (18), 8 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-15 03:41:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 316 transitions. [2022-02-15 03:41:10,998 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 316 transitions. Word has length 129 [2022-02-15 03:41:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:41:10,999 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 316 transitions. [2022-02-15 03:41:10,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:41:10,999 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 316 transitions. [2022-02-15 03:41:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-15 03:41:10,999 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:41:11,000 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:41:11,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 03:41:11,000 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:41:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:41:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1297690251, now seen corresponding path program 34 times [2022-02-15 03:41:11,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:41:11,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863292982] [2022-02-15 03:41:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:41:11,001 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:41:11,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:41:11,003 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:41:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:41:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:13,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:41:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:41:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:13,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:41:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:41:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:41:13,224 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:41:13,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863292982] [2022-02-15 03:41:13,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1863292982] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:41:13,224 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:41:13,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 03:41:13,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870421254] [2022-02-15 03:41:13,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:41:13,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 03:41:13,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:41:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 03:41:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1218, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 03:41:13,228 INFO L87 Difference]: Start difference. First operand 295 states and 316 transitions. Second operand has 37 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:41:19,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:41:19,634 INFO L93 Difference]: Finished difference Result 509 states and 554 transitions. [2022-02-15 03:41:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 03:41:19,634 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 129 [2022-02-15 03:41:19,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:41:19,636 INFO L225 Difference]: With dead ends: 509 [2022-02-15 03:41:19,636 INFO L226 Difference]: Without dead ends: 507 [2022-02-15 03:41:19,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=936, Invalid=11054, Unknown=0, NotChecked=0, Total=11990 [2022-02-15 03:41:19,637 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 276 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:41:19,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 159 Invalid, 3779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 03:41:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-02-15 03:41:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 367. [2022-02-15 03:41:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 336 states have (on average 1.0476190476190477) internal successors, (352), 339 states have internal predecessors, (352), 22 states have call successors, (22), 10 states have call predecessors, (22), 8 states have return successors, (21), 17 states have call predecessors, (21), 21 states have call successors, (21) [2022-02-15 03:41:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 395 transitions. [2022-02-15 03:41:20,020 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 395 transitions. Word has length 129 [2022-02-15 03:41:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:41:20,022 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 395 transitions. [2022-02-15 03:41:20,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:41:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 395 transitions. [2022-02-15 03:41:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-15 03:41:20,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:41:20,028 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:41:20,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 03:41:20,028 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:41:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:41:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1012502556, now seen corresponding path program 35 times [2022-02-15 03:41:20,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:41:20,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087913487] [2022-02-15 03:41:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:41:20,030 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:41:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:41:20,031 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:41:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:41:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-15 03:41:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-15 03:41:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-15 03:41:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-15 03:41:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:41:20,515 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:41:20,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087913487] [2022-02-15 03:41:20,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1087913487] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:41:20,515 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:41:20,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 03:41:20,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857033771] [2022-02-15 03:41:20,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:41:20,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 03:41:20,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:41:20,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 03:41:20,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-02-15 03:41:20,517 INFO L87 Difference]: Start difference. First operand 367 states and 395 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:41:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:41:24,113 INFO L93 Difference]: Finished difference Result 772 states and 860 transitions. [2022-02-15 03:41:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 03:41:24,114 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 132 [2022-02-15 03:41:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:41:24,116 INFO L225 Difference]: With dead ends: 772 [2022-02-15 03:41:24,116 INFO L226 Difference]: Without dead ends: 642 [2022-02-15 03:41:24,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=307, Invalid=3353, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 03:41:24,116 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 290 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 5045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:41:24,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 174 Invalid, 5045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 4722 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 03:41:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-02-15 03:41:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 390. [2022-02-15 03:41:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 359 states have (on average 1.052924791086351) internal successors, (378), 362 states have internal predecessors, (378), 22 states have call successors, (22), 10 states have call predecessors, (22), 8 states have return successors, (21), 17 states have call predecessors, (21), 21 states have call successors, (21) [2022-02-15 03:41:24,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 421 transitions. [2022-02-15 03:41:24,537 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 421 transitions. Word has length 132 [2022-02-15 03:41:24,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:41:24,537 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 421 transitions. [2022-02-15 03:41:24,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:41:24,537 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 421 transitions. [2022-02-15 03:41:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-15 03:41:24,538 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:41:24,538 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:41:24,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 03:41:24,538 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:41:24,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:41:24,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1010747997, now seen corresponding path program 36 times [2022-02-15 03:41:24,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:41:24,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752836651] [2022-02-15 03:41:24,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:41:24,540 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:41:24,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:41:24,541 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:41:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:41:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-02-15 03:41:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:41:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:41:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:41:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:41:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:41:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-02-15 03:41:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:41:26,800 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:41:26,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752836651] [2022-02-15 03:41:26,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [752836651] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:41:26,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:41:26,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 03:41:26,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744616573] [2022-02-15 03:41:26,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:41:26,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 03:41:26,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:41:26,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 03:41:26,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1166, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 03:41:26,801 INFO L87 Difference]: Start difference. First operand 390 states and 421 transitions. Second operand has 36 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 states have internal predecessors, (86), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-15 03:41:31,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:41:31,707 INFO L93 Difference]: Finished difference Result 470 states and 506 transitions. [2022-02-15 03:41:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 03:41:31,707 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 states have internal predecessors, (86), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 137 [2022-02-15 03:41:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:41:31,709 INFO L225 Difference]: With dead ends: 470 [2022-02-15 03:41:31,709 INFO L226 Difference]: Without dead ends: 468 [2022-02-15 03:41:31,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=694, Invalid=7496, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 03:41:31,715 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 278 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 3081 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 3081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:41:31,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 146 Invalid, 3345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 3081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 03:41:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-02-15 03:41:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 410. [2022-02-15 03:41:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.0508021390374331) internal successors, (393), 377 states have internal predecessors, (393), 26 states have call successors, (26), 11 states have call predecessors, (26), 9 states have return successors, (25), 21 states have call predecessors, (25), 25 states have call successors, (25) [2022-02-15 03:41:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 444 transitions. [2022-02-15 03:41:32,246 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 444 transitions. Word has length 137 [2022-02-15 03:41:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:41:32,248 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 444 transitions. [2022-02-15 03:41:32,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 34 states have internal predecessors, (86), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-15 03:41:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 444 transitions. [2022-02-15 03:41:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-15 03:41:32,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:41:32,249 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:41:32,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 03:41:32,249 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:41:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:41:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1159461383, now seen corresponding path program 37 times [2022-02-15 03:41:32,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:41:32,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661446880] [2022-02-15 03:41:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:41:32,251 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:41:32,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:41:32,253 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:41:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:41:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:41:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:41:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:41:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:41:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:41:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-02-15 03:41:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:41:34,289 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:41:34,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661446880] [2022-02-15 03:41:34,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [661446880] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:41:34,289 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:41:34,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 03:41:34,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536778474] [2022-02-15 03:41:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:41:34,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 03:41:34,289 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:41:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 03:41:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 03:41:34,290 INFO L87 Difference]: Start difference. First operand 410 states and 444 transitions. Second operand has 36 states, 35 states have (on average 2.342857142857143) internal successors, (82), 34 states have internal predecessors, (82), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:41:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:41:38,320 INFO L93 Difference]: Finished difference Result 544 states and 585 transitions. [2022-02-15 03:41:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 03:41:38,321 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.342857142857143) internal successors, (82), 34 states have internal predecessors, (82), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 137 [2022-02-15 03:41:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:41:38,322 INFO L225 Difference]: With dead ends: 544 [2022-02-15 03:41:38,322 INFO L226 Difference]: Without dead ends: 542 [2022-02-15 03:41:38,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=668, Invalid=6304, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 03:41:38,323 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 305 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:41:38,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 91 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 03:41:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-02-15 03:41:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 426. [2022-02-15 03:41:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 386 states have (on average 1.049222797927461) internal successors, (405), 389 states have internal predecessors, (405), 28 states have call successors, (28), 13 states have call predecessors, (28), 11 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2022-02-15 03:41:38,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 460 transitions. [2022-02-15 03:41:38,918 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 460 transitions. Word has length 137 [2022-02-15 03:41:38,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:41:38,918 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 460 transitions. [2022-02-15 03:41:38,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.342857142857143) internal successors, (82), 34 states have internal predecessors, (82), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:41:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 460 transitions. [2022-02-15 03:41:38,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-15 03:41:38,919 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:41:38,919 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:41:38,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 03:41:38,919 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:41:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:41:38,920 INFO L85 PathProgramCache]: Analyzing trace with hash -147199643, now seen corresponding path program 38 times [2022-02-15 03:41:38,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:41:38,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263792421] [2022-02-15 03:41:38,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:41:38,921 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:41:38,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:41:38,922 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:41:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:42,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:41:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:41:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:41:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:41:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:41:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-02-15 03:41:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:41:42,392 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:41:42,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263792421] [2022-02-15 03:41:42,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1263792421] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:41:42,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:41:42,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 03:41:42,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800555683] [2022-02-15 03:41:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:41:42,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 03:41:42,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:41:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 03:41:42,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1568, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 03:41:42,394 INFO L87 Difference]: Start difference. First operand 426 states and 460 transitions. Second operand has 42 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:41:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:41:48,938 INFO L93 Difference]: Finished difference Result 618 states and 666 transitions. [2022-02-15 03:41:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-15 03:41:48,938 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 137 [2022-02-15 03:41:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:41:48,940 INFO L225 Difference]: With dead ends: 618 [2022-02-15 03:41:48,940 INFO L226 Difference]: Without dead ends: 616 [2022-02-15 03:41:48,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3194 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=971, Invalid=10159, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 03:41:48,941 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 303 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 3880 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 3880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:41:48,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 153 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 3880 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 03:41:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-02-15 03:41:49,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 426. [2022-02-15 03:41:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 386 states have (on average 1.049222797927461) internal successors, (405), 389 states have internal predecessors, (405), 27 states have call successors, (27), 14 states have call predecessors, (27), 12 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-15 03:41:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 458 transitions. [2022-02-15 03:41:49,568 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 458 transitions. Word has length 137 [2022-02-15 03:41:49,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:41:49,569 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 458 transitions. [2022-02-15 03:41:49,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:41:49,569 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 458 transitions. [2022-02-15 03:41:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-15 03:41:49,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:41:49,570 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:41:49,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 03:41:49,570 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:41:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:41:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2101626225, now seen corresponding path program 39 times [2022-02-15 03:41:49,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:41:49,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919238357] [2022-02-15 03:41:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:41:49,571 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:41:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:41:49,576 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:41:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:53,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:41:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:53,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:41:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:41:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:53,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:41:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-02-15 03:41:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:41:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:41:53,442 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:41:53,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919238357] [2022-02-15 03:41:53,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [919238357] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:41:53,442 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:41:53,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 03:41:53,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969158454] [2022-02-15 03:41:53,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:41:53,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 03:41:53,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:41:53,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 03:41:53,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 03:41:53,443 INFO L87 Difference]: Start difference. First operand 426 states and 458 transitions. Second operand has 45 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:42:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:42:02,251 INFO L93 Difference]: Finished difference Result 769 states and 835 transitions. [2022-02-15 03:42:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 03:42:02,251 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 137 [2022-02-15 03:42:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:42:02,257 INFO L225 Difference]: With dead ends: 769 [2022-02-15 03:42:02,257 INFO L226 Difference]: Without dead ends: 767 [2022-02-15 03:42:02,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4513 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1424, Invalid=13582, Unknown=0, NotChecked=0, Total=15006 [2022-02-15 03:42:02,258 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 440 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4689 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 5188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 4689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:42:02,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 138 Invalid, 5188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 4689 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-15 03:42:02,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-02-15 03:42:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 503. [2022-02-15 03:42:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 459 states have (on average 1.0479302832244008) internal successors, (481), 463 states have internal predecessors, (481), 31 states have call successors, (31), 14 states have call predecessors, (31), 12 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) [2022-02-15 03:42:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 542 transitions. [2022-02-15 03:42:02,933 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 542 transitions. Word has length 137 [2022-02-15 03:42:02,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:42:02,933 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 542 transitions. [2022-02-15 03:42:02,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-15 03:42:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 542 transitions. [2022-02-15 03:42:02,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-02-15 03:42:02,934 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:42:02,935 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:42:02,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 03:42:02,935 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:42:02,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:42:02,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1208128232, now seen corresponding path program 40 times [2022-02-15 03:42:02,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:42:02,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260369307] [2022-02-15 03:42:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:42:02,936 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:42:02,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:42:02,938 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:42:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:42:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:03,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-15 03:42:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-15 03:42:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-15 03:42:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-15 03:42:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:42:03,473 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:42:03,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260369307] [2022-02-15 03:42:03,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [260369307] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:42:03,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:42:03,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 03:42:03,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112840421] [2022-02-15 03:42:03,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:42:03,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 03:42:03,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:42:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 03:42:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-15 03:42:03,475 INFO L87 Difference]: Start difference. First operand 503 states and 542 transitions. Second operand has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:42:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:42:08,243 INFO L93 Difference]: Finished difference Result 1105 states and 1226 transitions. [2022-02-15 03:42:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 03:42:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 140 [2022-02-15 03:42:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:42:08,246 INFO L225 Difference]: With dead ends: 1105 [2022-02-15 03:42:08,246 INFO L226 Difference]: Without dead ends: 922 [2022-02-15 03:42:08,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=333, Invalid=3957, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 03:42:08,249 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 322 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5543 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 5899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 5543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 03:42:08,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 184 Invalid, 5899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 5543 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 03:42:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-02-15 03:42:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 532. [2022-02-15 03:42:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 488 states have (on average 1.0532786885245902) internal successors, (514), 492 states have internal predecessors, (514), 31 states have call successors, (31), 14 states have call predecessors, (31), 12 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) [2022-02-15 03:42:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 575 transitions. [2022-02-15 03:42:09,023 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 575 transitions. Word has length 140 [2022-02-15 03:42:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:42:09,023 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 575 transitions. [2022-02-15 03:42:09,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.966666666666667) internal successors, (89), 29 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 03:42:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 575 transitions. [2022-02-15 03:42:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-02-15 03:42:09,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:42:09,024 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:42:09,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 03:42:09,025 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:42:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:42:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash 573012193, now seen corresponding path program 41 times [2022-02-15 03:42:09,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:42:09,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944477591] [2022-02-15 03:42:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:42:09,026 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:42:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:42:09,028 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:42:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:42:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-15 03:42:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:42:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:42:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:42:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:42:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-02-15 03:42:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-02-15 03:42:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:42:10,951 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:42:10,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944477591] [2022-02-15 03:42:10,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [944477591] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:42:10,951 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:42:10,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 03:42:10,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83840838] [2022-02-15 03:42:10,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:42:10,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 03:42:10,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:42:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 03:42:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-02-15 03:42:10,953 INFO L87 Difference]: Start difference. First operand 532 states and 575 transitions. Second operand has 29 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-15 03:42:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:42:14,788 INFO L93 Difference]: Finished difference Result 778 states and 831 transitions. [2022-02-15 03:42:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 03:42:14,789 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 145 [2022-02-15 03:42:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:42:14,791 INFO L225 Difference]: With dead ends: 778 [2022-02-15 03:42:14,791 INFO L226 Difference]: Without dead ends: 776 [2022-02-15 03:42:14,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=468, Invalid=3692, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 03:42:14,791 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 287 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:42:14,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 83 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 03:42:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-02-15 03:42:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 560. [2022-02-15 03:42:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 509 states have (on average 1.0510805500982319) internal successors, (535), 513 states have internal predecessors, (535), 37 states have call successors, (37), 15 states have call predecessors, (37), 13 states have return successors, (36), 31 states have call predecessors, (36), 36 states have call successors, (36) [2022-02-15 03:42:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 608 transitions. [2022-02-15 03:42:15,711 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 608 transitions. Word has length 145 [2022-02-15 03:42:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:42:15,711 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 608 transitions. [2022-02-15 03:42:15,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-15 03:42:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 608 transitions. [2022-02-15 03:42:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-02-15 03:42:15,712 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:42:15,712 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:42:15,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 03:42:15,713 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:42:15,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:42:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1140381121, now seen corresponding path program 42 times [2022-02-15 03:42:15,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:42:15,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979031028] [2022-02-15 03:42:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:42:15,714 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:42:15,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:42:15,716 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:42:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:42:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-15 03:42:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:20,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:42:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:42:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:42:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-02-15 03:42:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-02-15 03:42:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:42:20,246 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:42:20,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979031028] [2022-02-15 03:42:20,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [979031028] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:42:20,247 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:42:20,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 03:42:20,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113985587] [2022-02-15 03:42:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:42:20,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 03:42:20,260 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:42:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 03:42:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 03:42:20,260 INFO L87 Difference]: Start difference. First operand 560 states and 608 transitions. Second operand has 47 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 46 states have internal predecessors, (103), 8 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:42:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:42:30,316 INFO L93 Difference]: Finished difference Result 786 states and 847 transitions. [2022-02-15 03:42:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 03:42:30,316 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 46 states have internal predecessors, (103), 8 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 145 [2022-02-15 03:42:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:42:30,318 INFO L225 Difference]: With dead ends: 786 [2022-02-15 03:42:30,318 INFO L226 Difference]: Without dead ends: 784 [2022-02-15 03:42:30,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1166, Invalid=12406, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 03:42:30,319 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 339 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4958 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 5278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 4958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:42:30,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 213 Invalid, 5278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 4958 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-02-15 03:42:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-02-15 03:42:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 564. [2022-02-15 03:42:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 512 states have (on average 1.05078125) internal successors, (538), 516 states have internal predecessors, (538), 38 states have call successors, (38), 15 states have call predecessors, (38), 13 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) [2022-02-15 03:42:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 613 transitions. [2022-02-15 03:42:31,297 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 613 transitions. Word has length 145 [2022-02-15 03:42:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:42:31,297 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 613 transitions. [2022-02-15 03:42:31,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 46 states have internal predecessors, (103), 8 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-15 03:42:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 613 transitions. [2022-02-15 03:42:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-02-15 03:42:31,298 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:42:31,298 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:42:31,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 03:42:31,298 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:42:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:42:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1751265641, now seen corresponding path program 43 times [2022-02-15 03:42:31,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:42:31,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119695165] [2022-02-15 03:42:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:42:31,300 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:42:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:42:31,301 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:42:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:42:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-02-15 03:42:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-02-15 03:42:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-02-15 03:42:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-02-15 03:42:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-02-15 03:42:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:42:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:42:34,434 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:42:34,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119695165] [2022-02-15 03:42:34,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [119695165] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:42:34,434 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:42:34,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 03:42:34,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715925087] [2022-02-15 03:42:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:42:34,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 03:42:34,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:42:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 03:42:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1647, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 03:42:34,435 INFO L87 Difference]: Start difference. First operand 564 states and 613 transitions. Second operand has 43 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:42:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:42:41,592 INFO L93 Difference]: Finished difference Result 902 states and 971 transitions. [2022-02-15 03:42:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 03:42:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 145 [2022-02-15 03:42:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:42:41,595 INFO L225 Difference]: With dead ends: 902 [2022-02-15 03:42:41,595 INFO L226 Difference]: Without dead ends: 900 [2022-02-15 03:42:41,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4267 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1146, Invalid=12896, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 03:42:41,598 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 334 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4626 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 4626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:42:41,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 179 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 4626 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 03:42:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-02-15 03:42:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 580. [2022-02-15 03:42:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 524 states have (on average 1.049618320610687) internal successors, (550), 528 states have internal predecessors, (550), 39 states have call successors, (39), 18 states have call predecessors, (39), 16 states have return successors, (38), 33 states have call predecessors, (38), 38 states have call successors, (38) [2022-02-15 03:42:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 627 transitions. [2022-02-15 03:42:42,732 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 627 transitions. Word has length 145 [2022-02-15 03:42:42,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:42:42,732 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 627 transitions. [2022-02-15 03:42:42,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-15 03:42:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 627 transitions. [2022-02-15 03:42:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-02-15 03:42:42,733 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:42:42,733 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:42:42,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 03:42:42,733 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:42:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:42:42,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1262336839, now seen corresponding path program 44 times [2022-02-15 03:42:42,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:42:42,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362359567] [2022-02-15 03:42:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:42:42,735 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 03:42:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:42:42,736 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:42:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat