/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_2-1-simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:57:17,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:57:17,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:57:17,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:57:17,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:57:17,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:57:17,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:57:17,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 02:57:17,901 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:57:17,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:57:17,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:57:17,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:57:17,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:57:17,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:57:17,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:57:17,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:57:17,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:57:17,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:57:17,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:57:17,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:57:17,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:57:17,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:57:17,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:57:17,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:57:17,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:57:17,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:57:17,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:57:17,906 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 02:57:17,906 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:57:18,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:57:18,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:57:18,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:57:18,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:57:18,121 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:57:18,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_2-1-simple.i [2022-02-24 02:57:18,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6398777d/0deb7d421da94b51bd65d4123873fbdd/FLAG706687834 [2022-02-24 02:57:18,596 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:57:18,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_2-1-simple.i [2022-02-24 02:57:18,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6398777d/0deb7d421da94b51bd65d4123873fbdd/FLAG706687834 [2022-02-24 02:57:18,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6398777d/0deb7d421da94b51bd65d4123873fbdd [2022-02-24 02:57:18,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:57:18,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:57:18,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:57:18,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:57:18,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:57:18,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@481c593f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18, skipping insertion in model container [2022-02-24 02:57:18,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:57:18,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:57:18,781 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_2-1-simple.i[809,822] [2022-02-24 02:57:18,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:57:18,799 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:57:18,809 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_2-1-simple.i[809,822] [2022-02-24 02:57:18,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:57:18,822 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:57:18,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18 WrapperNode [2022-02-24 02:57:18,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:57:18,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:57:18,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:57:18,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:57:18,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:57:18,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:57:18,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:57:18,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:57:18,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (1/1) ... [2022-02-24 02:57:18,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:57:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:57:18,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 02:57:18,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 02:57:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:57:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:57:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:57:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 02:57:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:57:18,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:57:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:57:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-24 02:57:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-24 02:57:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:57:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:57:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 02:57:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:57:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 02:57:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 02:57:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:57:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:57:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:57:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:57:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:57:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:57:18,974 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:57:18,975 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:57:19,058 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:57:19,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:57:19,063 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 02:57:19,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:57:19 BoogieIcfgContainer [2022-02-24 02:57:19,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:57:19,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:57:19,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:57:19,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:57:19,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:57:18" (1/3) ... [2022-02-24 02:57:19,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@959ee36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:57:19, skipping insertion in model container [2022-02-24 02:57:19,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:57:18" (2/3) ... [2022-02-24 02:57:19,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@959ee36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:57:19, skipping insertion in model container [2022-02-24 02:57:19,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:57:19" (3/3) ... [2022-02-24 02:57:19,072 INFO L111 eAbstractionObserver]: Analyzing ICFG array_2-1-simple.i [2022-02-24 02:57:19,076 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:57:19,076 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:57:19,133 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:57:19,141 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-24 02:57:19,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:57:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-24 02:57:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-24 02:57:19,162 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:19,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:19,163 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash -445681932, now seen corresponding path program 1 times [2022-02-24 02:57:19,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:19,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398319359] [2022-02-24 02:57:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:19,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:19,232 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:57:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:19,431 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:19,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398319359] [2022-02-24 02:57:19,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1398319359] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:19,433 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:19,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-24 02:57:19,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768747932] [2022-02-24 02:57:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:19,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-24 02:57:19,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-24 02:57:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 02:57:19,473 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:19,530 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-02-24 02:57:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-24 02:57:19,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 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 12 [2022-02-24 02:57:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:19,541 INFO L225 Difference]: With dead ends: 34 [2022-02-24 02:57:19,541 INFO L226 Difference]: Without dead ends: 14 [2022-02-24 02:57:19,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 02:57:19,547 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:19,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-24 02:57:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-24 02:57:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-02-24 02:57:19,574 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-02-24 02:57:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:19,575 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-02-24 02:57:19,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-02-24 02:57:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-24 02:57:19,576 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:19,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:19,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:57:19,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -617456838, now seen corresponding path program 1 times [2022-02-24 02:57:19,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:19,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222180509] [2022-02-24 02:57:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:19,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:19,581 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:57:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:19,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:19,663 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:19,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222180509] [2022-02-24 02:57:19,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1222180509] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:19,664 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:19,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 02:57:19,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391425675] [2022-02-24 02:57:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:19,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 02:57:19,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 02:57:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 02:57:19,667 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:19,714 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-02-24 02:57:19,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 02:57:19,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 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 12 [2022-02-24 02:57:19,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:19,716 INFO L225 Difference]: With dead ends: 22 [2022-02-24 02:57:19,716 INFO L226 Difference]: Without dead ends: 16 [2022-02-24 02:57:19,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:57:19,718 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:19,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-02-24 02:57:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-02-24 02:57:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-02-24 02:57:19,724 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2022-02-24 02:57:19,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:19,724 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-02-24 02:57:19,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,724 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-02-24 02:57:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-24 02:57:19,725 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:19,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:19,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:57:19,725 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:19,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1544621860, now seen corresponding path program 1 times [2022-02-24 02:57:19,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:19,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890091414] [2022-02-24 02:57:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:19,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:19,739 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:19,739 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:19,847 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:19,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890091414] [2022-02-24 02:57:19,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1890091414] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:19,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:19,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:57:19,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396704704] [2022-02-24 02:57:19,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:19,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:57:19,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:57:19,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:57:19,854 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:19,913 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-02-24 02:57:19,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:57:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-02-24 02:57:19,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:19,914 INFO L225 Difference]: With dead ends: 24 [2022-02-24 02:57:19,914 INFO L226 Difference]: Without dead ends: 18 [2022-02-24 02:57:19,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:57:19,916 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:19,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-24 02:57:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-02-24 02:57:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-02-24 02:57:19,921 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2022-02-24 02:57:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:19,921 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-02-24 02:57:19,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-02-24 02:57:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-24 02:57:19,922 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:19,922 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:19,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:57:19,923 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:19,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:19,923 INFO L85 PathProgramCache]: Analyzing trace with hash 802989566, now seen corresponding path program 2 times [2022-02-24 02:57:19,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:19,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321797556] [2022-02-24 02:57:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:19,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:19,928 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:19,928 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:19,995 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:19,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321797556] [2022-02-24 02:57:19,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1321797556] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:19,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:19,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:57:19,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764957301] [2022-02-24 02:57:19,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:19,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:57:19,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:57:19,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:57:19,997 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:20,051 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-02-24 02:57:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 02:57:20,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-02-24 02:57:20,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:20,053 INFO L225 Difference]: With dead ends: 26 [2022-02-24 02:57:20,053 INFO L226 Difference]: Without dead ends: 20 [2022-02-24 02:57:20,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:57:20,054 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:20,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 19 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-24 02:57:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-02-24 02:57:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-02-24 02:57:20,059 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2022-02-24 02:57:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:20,060 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-02-24 02:57:20,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-02-24 02:57:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-24 02:57:20,061 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:20,061 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:20,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 02:57:20,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:20,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:20,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1999739552, now seen corresponding path program 3 times [2022-02-24 02:57:20,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:20,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688269608] [2022-02-24 02:57:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:20,083 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:20,083 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:20,191 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:20,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688269608] [2022-02-24 02:57:20,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1688269608] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:20,192 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:20,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 02:57:20,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948104397] [2022-02-24 02:57:20,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:20,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 02:57:20,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 02:57:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:57:20,193 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:20,273 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-02-24 02:57:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 02:57:20,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-02-24 02:57:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:20,274 INFO L225 Difference]: With dead ends: 28 [2022-02-24 02:57:20,274 INFO L226 Difference]: Without dead ends: 22 [2022-02-24 02:57:20,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:57:20,276 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:20,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:20,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-24 02:57:20,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-02-24 02:57:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-02-24 02:57:20,281 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2022-02-24 02:57:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:20,282 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-02-24 02:57:20,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-02-24 02:57:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 02:57:20,282 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:20,282 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:20,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 02:57:20,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1025240770, now seen corresponding path program 4 times [2022-02-24 02:57:20,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:20,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41369070] [2022-02-24 02:57:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:20,291 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:20,291 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:20,375 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:20,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41369070] [2022-02-24 02:57:20,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [41369070] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:20,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:20,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:57:20,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230030227] [2022-02-24 02:57:20,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:20,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:57:20,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:20,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:57:20,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:57:20,377 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:20,471 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-02-24 02:57:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 02:57:20,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-02-24 02:57:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:20,473 INFO L225 Difference]: With dead ends: 30 [2022-02-24 02:57:20,473 INFO L226 Difference]: Without dead ends: 24 [2022-02-24 02:57:20,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:57:20,476 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:20,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-24 02:57:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-02-24 02:57:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-02-24 02:57:20,482 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2022-02-24 02:57:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:20,482 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-02-24 02:57:20,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-02-24 02:57:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-24 02:57:20,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:20,483 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:20,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 02:57:20,483 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash 834781796, now seen corresponding path program 5 times [2022-02-24 02:57:20,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:20,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415977274] [2022-02-24 02:57:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:20,491 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:20,491 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:20,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:20,617 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:20,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415977274] [2022-02-24 02:57:20,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1415977274] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:20,617 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:20,617 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:57:20,617 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693809612] [2022-02-24 02:57:20,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:20,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:57:20,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:57:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:57:20,619 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:20,718 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-02-24 02:57:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 02:57:20,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-24 02:57:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:20,720 INFO L225 Difference]: With dead ends: 32 [2022-02-24 02:57:20,720 INFO L226 Difference]: Without dead ends: 26 [2022-02-24 02:57:20,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:57:20,722 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:20,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 39 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-24 02:57:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-02-24 02:57:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-02-24 02:57:20,733 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2022-02-24 02:57:20,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:20,733 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-02-24 02:57:20,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-02-24 02:57:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-24 02:57:20,734 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:20,734 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:20,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 02:57:20,735 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:20,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1807665786, now seen corresponding path program 6 times [2022-02-24 02:57:20,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:20,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425800245] [2022-02-24 02:57:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:20,739 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:20,739 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:20,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:20,820 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:20,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425800245] [2022-02-24 02:57:20,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [425800245] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:20,821 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:20,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:57:20,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182709091] [2022-02-24 02:57:20,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:20,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:57:20,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:57:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:57:20,829 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:20,945 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-02-24 02:57:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 02:57:20,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-02-24 02:57:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:20,946 INFO L225 Difference]: With dead ends: 34 [2022-02-24 02:57:20,946 INFO L226 Difference]: Without dead ends: 28 [2022-02-24 02:57:20,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:57:20,947 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:20,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 34 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:20,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-24 02:57:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-02-24 02:57:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-02-24 02:57:20,953 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2022-02-24 02:57:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:20,953 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-02-24 02:57:20,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-02-24 02:57:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-24 02:57:20,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:20,954 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:20,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 02:57:20,954 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1420847144, now seen corresponding path program 7 times [2022-02-24 02:57:20,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:20,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056051721] [2022-02-24 02:57:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:20,958 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:20,958 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:21,081 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:21,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056051721] [2022-02-24 02:57:21,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1056051721] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:21,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:21,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:57:21,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396023439] [2022-02-24 02:57:21,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:21,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:57:21,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:57:21,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:57:21,083 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:21,211 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-02-24 02:57:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 02:57:21,211 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-02-24 02:57:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:21,212 INFO L225 Difference]: With dead ends: 36 [2022-02-24 02:57:21,212 INFO L226 Difference]: Without dead ends: 30 [2022-02-24 02:57:21,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:57:21,213 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:21,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 29 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:21,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-24 02:57:21,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-02-24 02:57:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-02-24 02:57:21,219 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2022-02-24 02:57:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:21,219 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-02-24 02:57:21,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-02-24 02:57:21,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-24 02:57:21,220 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:21,220 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:21,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 02:57:21,221 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:21,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1239582134, now seen corresponding path program 8 times [2022-02-24 02:57:21,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:21,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637817834] [2022-02-24 02:57:21,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:21,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:21,224 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:21,225 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:21,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:21,331 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:21,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637817834] [2022-02-24 02:57:21,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1637817834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:21,332 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:21,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:57:21,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143720674] [2022-02-24 02:57:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:21,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:57:21,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:57:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:57:21,333 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:21,455 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-02-24 02:57:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:57:21,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-02-24 02:57:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:21,456 INFO L225 Difference]: With dead ends: 38 [2022-02-24 02:57:21,456 INFO L226 Difference]: Without dead ends: 32 [2022-02-24 02:57:21,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:57:21,457 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:21,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 24 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-24 02:57:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2022-02-24 02:57:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-02-24 02:57:21,463 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2022-02-24 02:57:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:21,463 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-02-24 02:57:21,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-02-24 02:57:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-24 02:57:21,485 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:21,486 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:21,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 02:57:21,486 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:21,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:21,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1888390124, now seen corresponding path program 9 times [2022-02-24 02:57:21,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:21,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89969564] [2022-02-24 02:57:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:21,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:21,496 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:21,496 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:21,621 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:21,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89969564] [2022-02-24 02:57:21,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [89969564] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:21,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:21,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:57:21,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190516920] [2022-02-24 02:57:21,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:21,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:57:21,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:21,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:57:21,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:57:21,623 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:21,753 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-02-24 02:57:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:57:21,754 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-24 02:57:21,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:21,755 INFO L225 Difference]: With dead ends: 40 [2022-02-24 02:57:21,755 INFO L226 Difference]: Without dead ends: 34 [2022-02-24 02:57:21,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:57:21,756 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:21,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 24 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-24 02:57:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-02-24 02:57:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-02-24 02:57:21,772 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2022-02-24 02:57:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:21,772 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-02-24 02:57:21,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-02-24 02:57:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-24 02:57:21,777 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:21,777 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:21,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 02:57:21,777 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:21,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:21,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1392622862, now seen corresponding path program 10 times [2022-02-24 02:57:21,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:21,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821478397] [2022-02-24 02:57:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:21,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:21,785 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:21,785 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:21,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:21,929 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:21,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821478397] [2022-02-24 02:57:21,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1821478397] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:21,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:21,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:57:21,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564249181] [2022-02-24 02:57:21,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:21,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:57:21,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:57:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:57:21,931 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:22,090 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-02-24 02:57:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:57:22,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-02-24 02:57:22,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:22,092 INFO L225 Difference]: With dead ends: 42 [2022-02-24 02:57:22,093 INFO L226 Difference]: Without dead ends: 36 [2022-02-24 02:57:22,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:57:22,094 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:22,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 24 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-24 02:57:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-02-24 02:57:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-02-24 02:57:22,108 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2022-02-24 02:57:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:22,109 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-02-24 02:57:22,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-02-24 02:57:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-24 02:57:22,112 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:22,113 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:22,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 02:57:22,113 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:22,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1701653936, now seen corresponding path program 11 times [2022-02-24 02:57:22,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:22,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093457017] [2022-02-24 02:57:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:22,120 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:22,120 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:22,258 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:22,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093457017] [2022-02-24 02:57:22,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2093457017] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:22,258 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:22,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:57:22,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049138917] [2022-02-24 02:57:22,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:22,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:57:22,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:57:22,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:57:22,259 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:22,432 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-02-24 02:57:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:57:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-02-24 02:57:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:22,434 INFO L225 Difference]: With dead ends: 44 [2022-02-24 02:57:22,434 INFO L226 Difference]: Without dead ends: 38 [2022-02-24 02:57:22,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:57:22,435 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:22,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 34 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-02-24 02:57:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-02-24 02:57:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-02-24 02:57:22,441 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2022-02-24 02:57:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:22,441 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-02-24 02:57:22,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-02-24 02:57:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-24 02:57:22,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:22,442 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:22,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 02:57:22,442 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1967194670, now seen corresponding path program 12 times [2022-02-24 02:57:22,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:22,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744440084] [2022-02-24 02:57:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:22,446 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:22,446 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:22,586 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:22,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744440084] [2022-02-24 02:57:22,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1744440084] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:22,586 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:22,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:57:22,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767346554] [2022-02-24 02:57:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:22,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:57:22,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:22,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:57:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:57:22,588 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:22,777 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-02-24 02:57:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:57:22,778 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-02-24 02:57:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:22,778 INFO L225 Difference]: With dead ends: 46 [2022-02-24 02:57:22,779 INFO L226 Difference]: Without dead ends: 40 [2022-02-24 02:57:22,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:57:22,780 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:22,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 44 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-02-24 02:57:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-02-24 02:57:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2022-02-24 02:57:22,786 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2022-02-24 02:57:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:22,786 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2022-02-24 02:57:22,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2022-02-24 02:57:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-24 02:57:22,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:22,787 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:22,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 02:57:22,787 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1562555020, now seen corresponding path program 13 times [2022-02-24 02:57:22,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:22,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725118535] [2022-02-24 02:57:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:22,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:22,793 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:22,793 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:22,957 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:22,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725118535] [2022-02-24 02:57:22,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1725118535] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:22,957 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:22,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 02:57:22,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597605722] [2022-02-24 02:57:22,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:22,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 02:57:22,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 02:57:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:57:22,959 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:23,169 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-02-24 02:57:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:57:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-02-24 02:57:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:23,170 INFO L225 Difference]: With dead ends: 48 [2022-02-24 02:57:23,170 INFO L226 Difference]: Without dead ends: 42 [2022-02-24 02:57:23,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:57:23,171 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:23,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 29 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:57:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-24 02:57:23,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-02-24 02:57:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-02-24 02:57:23,178 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2022-02-24 02:57:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:23,178 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-02-24 02:57:23,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:23,178 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-02-24 02:57:23,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 02:57:23,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:23,179 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:23,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 02:57:23,179 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:23,180 INFO L85 PathProgramCache]: Analyzing trace with hash 749091990, now seen corresponding path program 14 times [2022-02-24 02:57:23,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:23,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629034794] [2022-02-24 02:57:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:23,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:23,183 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:23,183 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:23,362 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:23,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629034794] [2022-02-24 02:57:23,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [629034794] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:23,362 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:23,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 02:57:23,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340119255] [2022-02-24 02:57:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:23,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 02:57:23,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 02:57:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:57:23,363 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:23,590 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2022-02-24 02:57:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:57:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-02-24 02:57:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:23,591 INFO L225 Difference]: With dead ends: 50 [2022-02-24 02:57:23,591 INFO L226 Difference]: Without dead ends: 44 [2022-02-24 02:57:23,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 02:57:23,592 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:23,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 39 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-24 02:57:23,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-02-24 02:57:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2022-02-24 02:57:23,599 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2022-02-24 02:57:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:23,599 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2022-02-24 02:57:23,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2022-02-24 02:57:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-24 02:57:23,600 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:23,600 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:23,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 02:57:23,600 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1743776568, now seen corresponding path program 15 times [2022-02-24 02:57:23,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:23,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582688503] [2022-02-24 02:57:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:23,604 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:23,605 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:23,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:23,776 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:23,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582688503] [2022-02-24 02:57:23,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [582688503] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:23,776 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:23,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 02:57:23,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902828848] [2022-02-24 02:57:23,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:23,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 02:57:23,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 02:57:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:57:23,778 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:24,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:24,020 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-02-24 02:57:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:57:24,020 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-02-24 02:57:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:24,021 INFO L225 Difference]: With dead ends: 52 [2022-02-24 02:57:24,021 INFO L226 Difference]: Without dead ends: 46 [2022-02-24 02:57:24,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:57:24,023 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:24,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 49 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:24,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-24 02:57:24,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-02-24 02:57:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2022-02-24 02:57:24,030 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2022-02-24 02:57:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:24,030 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2022-02-24 02:57:24,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2022-02-24 02:57:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-24 02:57:24,031 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:24,031 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:24,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 02:57:24,031 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:24,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash -142050982, now seen corresponding path program 16 times [2022-02-24 02:57:24,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:24,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390738447] [2022-02-24 02:57:24,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:24,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:24,035 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:24,035 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:24,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:24,218 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:24,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390738447] [2022-02-24 02:57:24,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [390738447] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:24,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:24,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 02:57:24,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025328428] [2022-02-24 02:57:24,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:24,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 02:57:24,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:24,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 02:57:24,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:57:24,220 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:24,470 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-02-24 02:57:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:57:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-02-24 02:57:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:24,471 INFO L225 Difference]: With dead ends: 54 [2022-02-24 02:57:24,471 INFO L226 Difference]: Without dead ends: 48 [2022-02-24 02:57:24,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 02:57:24,472 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:24,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 24 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-24 02:57:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-02-24 02:57:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-02-24 02:57:24,480 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2022-02-24 02:57:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:24,480 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-02-24 02:57:24,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-02-24 02:57:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 02:57:24,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:24,480 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:24,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 02:57:24,481 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash 53872380, now seen corresponding path program 17 times [2022-02-24 02:57:24,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:24,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995934562] [2022-02-24 02:57:24,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:24,484 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:24,485 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:24,700 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:24,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995934562] [2022-02-24 02:57:24,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1995934562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:24,701 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:24,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 02:57:24,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493658870] [2022-02-24 02:57:24,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:24,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 02:57:24,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:24,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 02:57:24,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:57:24,702 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:25,016 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2022-02-24 02:57:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:57:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-02-24 02:57:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:25,017 INFO L225 Difference]: With dead ends: 56 [2022-02-24 02:57:25,017 INFO L226 Difference]: Without dead ends: 50 [2022-02-24 02:57:25,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 02:57:25,018 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:25,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 29 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-24 02:57:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-02-24 02:57:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-02-24 02:57:25,028 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2022-02-24 02:57:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:25,028 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-02-24 02:57:25,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-02-24 02:57:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-24 02:57:25,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:25,029 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:25,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 02:57:25,029 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:25,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash -642337762, now seen corresponding path program 18 times [2022-02-24 02:57:25,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:25,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913853449] [2022-02-24 02:57:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:25,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:25,033 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:25,033 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:25,259 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:25,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913853449] [2022-02-24 02:57:25,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1913853449] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:25,260 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:25,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 02:57:25,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680056174] [2022-02-24 02:57:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:25,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 02:57:25,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 02:57:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:57:25,261 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:25,536 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2022-02-24 02:57:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 02:57:25,537 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-02-24 02:57:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:25,537 INFO L225 Difference]: With dead ends: 58 [2022-02-24 02:57:25,537 INFO L226 Difference]: Without dead ends: 52 [2022-02-24 02:57:25,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 02:57:25,540 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:25,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 29 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-24 02:57:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-02-24 02:57:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-02-24 02:57:25,554 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2022-02-24 02:57:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:25,555 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-02-24 02:57:25,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 21 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-02-24 02:57:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 02:57:25,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:25,555 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:25,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 02:57:25,556 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash 314613952, now seen corresponding path program 19 times [2022-02-24 02:57:25,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:25,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098631714] [2022-02-24 02:57:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:25,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:25,561 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:25,561 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:25,807 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:25,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098631714] [2022-02-24 02:57:25,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2098631714] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:25,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:25,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 02:57:25,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374007664] [2022-02-24 02:57:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:25,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 02:57:25,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:25,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 02:57:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:57:25,809 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:26,142 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-02-24 02:57:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 02:57:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-02-24 02:57:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:26,143 INFO L225 Difference]: With dead ends: 60 [2022-02-24 02:57:26,143 INFO L226 Difference]: Without dead ends: 54 [2022-02-24 02:57:26,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:57:26,145 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:26,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 29 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-24 02:57:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-02-24 02:57:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2022-02-24 02:57:26,153 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2022-02-24 02:57:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:26,153 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2022-02-24 02:57:26,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2022-02-24 02:57:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-24 02:57:26,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:26,154 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:26,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 02:57:26,154 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:26,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash 822209762, now seen corresponding path program 20 times [2022-02-24 02:57:26,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:26,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144645199] [2022-02-24 02:57:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:26,158 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:26,158 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:26,407 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:26,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144645199] [2022-02-24 02:57:26,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [144645199] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:26,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:26,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 02:57:26,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644313319] [2022-02-24 02:57:26,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:26,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 02:57:26,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:26,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 02:57:26,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:57:26,409 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:26,742 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2022-02-24 02:57:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:57:26,744 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-02-24 02:57:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:26,744 INFO L225 Difference]: With dead ends: 62 [2022-02-24 02:57:26,744 INFO L226 Difference]: Without dead ends: 56 [2022-02-24 02:57:26,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 02:57:26,746 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:26,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 44 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-24 02:57:26,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-02-24 02:57:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-02-24 02:57:26,755 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2022-02-24 02:57:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:26,755 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-02-24 02:57:26,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-02-24 02:57:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 02:57:26,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:26,756 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:26,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 02:57:26,756 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:26,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:26,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1004488572, now seen corresponding path program 21 times [2022-02-24 02:57:26,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:26,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104833245] [2022-02-24 02:57:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:26,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:26,760 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:26,760 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:27,026 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:27,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104833245] [2022-02-24 02:57:27,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2104833245] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:27,026 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:27,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 02:57:27,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287702608] [2022-02-24 02:57:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:27,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 02:57:27,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:27,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 02:57:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:57:27,028 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:27,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:27,382 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2022-02-24 02:57:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:57:27,383 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-02-24 02:57:27,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:27,383 INFO L225 Difference]: With dead ends: 64 [2022-02-24 02:57:27,383 INFO L226 Difference]: Without dead ends: 58 [2022-02-24 02:57:27,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 02:57:27,385 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:27,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 29 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-02-24 02:57:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-02-24 02:57:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2022-02-24 02:57:27,393 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2022-02-24 02:57:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:27,394 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2022-02-24 02:57:27,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2022-02-24 02:57:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 02:57:27,394 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:27,394 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:27,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 02:57:27,395 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash 180036518, now seen corresponding path program 22 times [2022-02-24 02:57:27,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:27,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395382253] [2022-02-24 02:57:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:27,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:27,398 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:27,398 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:27,655 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:27,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395382253] [2022-02-24 02:57:27,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [395382253] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:27,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:27,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 02:57:27,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404649448] [2022-02-24 02:57:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:27,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 02:57:27,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 02:57:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:57:27,656 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:28,022 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2022-02-24 02:57:28,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 02:57:28,022 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-02-24 02:57:28,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:28,023 INFO L225 Difference]: With dead ends: 66 [2022-02-24 02:57:28,023 INFO L226 Difference]: Without dead ends: 60 [2022-02-24 02:57:28,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 02:57:28,025 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:28,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 39 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-02-24 02:57:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-02-24 02:57:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-02-24 02:57:28,034 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2022-02-24 02:57:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:28,034 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-02-24 02:57:28,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-02-24 02:57:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 02:57:28,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:28,039 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:28,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 02:57:28,039 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash 342314568, now seen corresponding path program 23 times [2022-02-24 02:57:28,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:28,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223574480] [2022-02-24 02:57:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:28,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:28,046 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:28,046 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:28,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:28,390 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:28,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223574480] [2022-02-24 02:57:28,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1223574480] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:28,390 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:28,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:57:28,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032371654] [2022-02-24 02:57:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:28,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:57:28,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:28,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:57:28,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:57:28,392 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:28,801 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2022-02-24 02:57:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:57:28,802 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-02-24 02:57:28,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:28,802 INFO L225 Difference]: With dead ends: 68 [2022-02-24 02:57:28,802 INFO L226 Difference]: Without dead ends: 62 [2022-02-24 02:57:28,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 02:57:28,804 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:28,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 44 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:28,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-24 02:57:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2022-02-24 02:57:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2022-02-24 02:57:28,814 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2022-02-24 02:57:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:28,815 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2022-02-24 02:57:28,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2022-02-24 02:57:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 02:57:28,815 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:28,815 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:28,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 02:57:28,816 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1672697962, now seen corresponding path program 24 times [2022-02-24 02:57:28,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:28,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986074579] [2022-02-24 02:57:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:28,831 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:28,831 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:29,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:29,147 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:29,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986074579] [2022-02-24 02:57:29,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1986074579] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:29,147 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:29,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 02:57:29,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637585052] [2022-02-24 02:57:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:29,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 02:57:29,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:29,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 02:57:29,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:57:29,150 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 28 states, 28 states have (on average 2.0) internal successors, (56), 27 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:29,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:29,575 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-02-24 02:57:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 02:57:29,575 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 27 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2022-02-24 02:57:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:29,576 INFO L225 Difference]: With dead ends: 70 [2022-02-24 02:57:29,576 INFO L226 Difference]: Without dead ends: 64 [2022-02-24 02:57:29,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 02:57:29,577 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:29,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 34 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-24 02:57:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-02-24 02:57:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2022-02-24 02:57:29,587 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2022-02-24 02:57:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:29,587 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2022-02-24 02:57:29,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 27 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2022-02-24 02:57:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 02:57:29,588 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:29,588 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:29,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 02:57:29,588 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash 270885388, now seen corresponding path program 25 times [2022-02-24 02:57:29,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:29,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444287286] [2022-02-24 02:57:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:29,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:29,592 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:29,592 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:29,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:29,937 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:29,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444287286] [2022-02-24 02:57:29,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1444287286] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:29,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:29,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 02:57:29,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969060775] [2022-02-24 02:57:29,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:29,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 02:57:29,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:29,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 02:57:29,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:57:29,938 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 29 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:30,388 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-02-24 02:57:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 02:57:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2022-02-24 02:57:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:30,389 INFO L225 Difference]: With dead ends: 72 [2022-02-24 02:57:30,389 INFO L226 Difference]: Without dead ends: 66 [2022-02-24 02:57:30,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 02:57:30,391 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:30,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 29 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-02-24 02:57:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-02-24 02:57:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2022-02-24 02:57:30,401 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2022-02-24 02:57:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:30,401 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2022-02-24 02:57:30,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 28 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2022-02-24 02:57:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-24 02:57:30,402 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:30,402 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:30,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 02:57:30,402 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1748732718, now seen corresponding path program 26 times [2022-02-24 02:57:30,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:30,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763625206] [2022-02-24 02:57:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:30,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:30,406 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:30,406 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:30,752 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:30,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763625206] [2022-02-24 02:57:30,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [763625206] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:30,752 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:30,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 02:57:30,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144572970] [2022-02-24 02:57:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:30,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 02:57:30,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 02:57:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:57:30,754 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:31,190 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-02-24 02:57:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 02:57:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-02-24 02:57:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:31,191 INFO L225 Difference]: With dead ends: 74 [2022-02-24 02:57:31,191 INFO L226 Difference]: Without dead ends: 68 [2022-02-24 02:57:31,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 02:57:31,193 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 62 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:31,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 29 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-24 02:57:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-02-24 02:57:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2022-02-24 02:57:31,200 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2022-02-24 02:57:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:31,200 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2022-02-24 02:57:31,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2022-02-24 02:57:31,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 02:57:31,201 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:31,201 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:31,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 02:57:31,201 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash 325841872, now seen corresponding path program 27 times [2022-02-24 02:57:31,201 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:31,201 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095033277] [2022-02-24 02:57:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:31,205 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:31,205 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:31,583 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:31,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095033277] [2022-02-24 02:57:31,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1095033277] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:31,583 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:31,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 02:57:31,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660044167] [2022-02-24 02:57:31,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:31,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 02:57:31,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:31,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 02:57:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:57:31,584 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:32,110 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-02-24 02:57:32,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 02:57:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-02-24 02:57:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:32,111 INFO L225 Difference]: With dead ends: 76 [2022-02-24 02:57:32,111 INFO L226 Difference]: Without dead ends: 70 [2022-02-24 02:57:32,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 02:57:32,113 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 64 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:32,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 29 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-24 02:57:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2022-02-24 02:57:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.015625) internal successors, (65), 64 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2022-02-24 02:57:32,121 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2022-02-24 02:57:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:32,121 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2022-02-24 02:57:32,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 30 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2022-02-24 02:57:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 02:57:32,122 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:32,122 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:32,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 02:57:32,122 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1272661006, now seen corresponding path program 28 times [2022-02-24 02:57:32,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:32,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234612011] [2022-02-24 02:57:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:32,129 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:32,129 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:32,543 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:32,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234612011] [2022-02-24 02:57:32,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1234612011] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:32,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:32,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-24 02:57:32,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422302359] [2022-02-24 02:57:32,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:32,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-24 02:57:32,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-24 02:57:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-02-24 02:57:32,545 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:33,081 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2022-02-24 02:57:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 02:57:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-02-24 02:57:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:33,082 INFO L225 Difference]: With dead ends: 78 [2022-02-24 02:57:33,082 INFO L226 Difference]: Without dead ends: 72 [2022-02-24 02:57:33,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 02:57:33,084 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:33,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 44 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:33,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-24 02:57:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-02-24 02:57:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2022-02-24 02:57:33,095 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2022-02-24 02:57:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:33,095 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2022-02-24 02:57:33,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:33,095 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2022-02-24 02:57:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 02:57:33,096 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:33,096 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:33,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 02:57:33,096 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 164365204, now seen corresponding path program 29 times [2022-02-24 02:57:33,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:33,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12363693] [2022-02-24 02:57:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:33,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:33,100 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:33,100 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:33,480 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:33,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12363693] [2022-02-24 02:57:33,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [12363693] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:33,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:33,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-24 02:57:33,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344464369] [2022-02-24 02:57:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:33,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-24 02:57:33,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-24 02:57:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 02:57:33,481 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:33,981 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-02-24 02:57:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 02:57:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-02-24 02:57:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:33,982 INFO L225 Difference]: With dead ends: 80 [2022-02-24 02:57:33,982 INFO L226 Difference]: Without dead ends: 74 [2022-02-24 02:57:33,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 02:57:33,983 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:33,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 49 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-24 02:57:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-02-24 02:57:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2022-02-24 02:57:33,992 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2022-02-24 02:57:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:33,992 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2022-02-24 02:57:33,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2022-02-24 02:57:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 02:57:33,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:33,993 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:33,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 02:57:33,993 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1832916298, now seen corresponding path program 30 times [2022-02-24 02:57:33,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:33,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373437179] [2022-02-24 02:57:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:33,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:33,997 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:33,997 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:34,451 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:34,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373437179] [2022-02-24 02:57:34,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1373437179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:34,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:34,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-24 02:57:34,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124517692] [2022-02-24 02:57:34,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:34,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-24 02:57:34,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:34,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-24 02:57:34,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 02:57:34,453 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 34 states, 34 states have (on average 2.0) internal successors, (68), 33 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:35,008 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2022-02-24 02:57:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 02:57:35,008 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0) internal successors, (68), 33 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2022-02-24 02:57:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:35,009 INFO L225 Difference]: With dead ends: 82 [2022-02-24 02:57:35,009 INFO L226 Difference]: Without dead ends: 76 [2022-02-24 02:57:35,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 02:57:35,010 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:35,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 34 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-24 02:57:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-02-24 02:57:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2022-02-24 02:57:35,023 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2022-02-24 02:57:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:35,023 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2022-02-24 02:57:35,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0) internal successors, (68), 33 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2022-02-24 02:57:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 02:57:35,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:35,024 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:35,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 02:57:35,024 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1370058408, now seen corresponding path program 31 times [2022-02-24 02:57:35,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:35,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960008377] [2022-02-24 02:57:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:35,028 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:35,029 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:35,494 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:35,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960008377] [2022-02-24 02:57:35,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [960008377] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:35,495 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:35,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-24 02:57:35,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265027015] [2022-02-24 02:57:35,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:35,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-24 02:57:35,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:35,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-24 02:57:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:57:35,496 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:36,031 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-02-24 02:57:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 02:57:36,032 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2022-02-24 02:57:36,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:36,032 INFO L225 Difference]: With dead ends: 84 [2022-02-24 02:57:36,032 INFO L226 Difference]: Without dead ends: 78 [2022-02-24 02:57:36,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 02:57:36,034 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 72 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:36,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 34 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-24 02:57:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2022-02-24 02:57:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 72 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:36,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-02-24 02:57:36,046 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2022-02-24 02:57:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:36,046 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-02-24 02:57:36,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:36,047 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-02-24 02:57:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 02:57:36,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:36,047 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:36,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 02:57:36,047 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:36,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1054742394, now seen corresponding path program 32 times [2022-02-24 02:57:36,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:36,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005865674] [2022-02-24 02:57:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:36,052 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:36,052 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:36,578 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:36,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005865674] [2022-02-24 02:57:36,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2005865674] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:36,578 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:36,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-24 02:57:36,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833199656] [2022-02-24 02:57:36,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:36,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-24 02:57:36,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-24 02:57:36,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 02:57:36,580 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:37,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:37,236 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-02-24 02:57:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-24 02:57:37,237 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2022-02-24 02:57:37,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:37,237 INFO L225 Difference]: With dead ends: 86 [2022-02-24 02:57:37,237 INFO L226 Difference]: Without dead ends: 80 [2022-02-24 02:57:37,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 02:57:37,239 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:37,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 29 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-24 02:57:37,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-02-24 02:57:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 74 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2022-02-24 02:57:37,252 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2022-02-24 02:57:37,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:37,252 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2022-02-24 02:57:37,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 states have internal predecessors, (72), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:37,253 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2022-02-24 02:57:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 02:57:37,253 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:37,253 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:37,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 02:57:37,254 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash -878928612, now seen corresponding path program 33 times [2022-02-24 02:57:37,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:37,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141104828] [2022-02-24 02:57:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:37,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:37,258 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:37,258 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:37,776 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:37,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141104828] [2022-02-24 02:57:37,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [141104828] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:37,776 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:37,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-24 02:57:37,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235614642] [2022-02-24 02:57:37,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:37,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-24 02:57:37,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-24 02:57:37,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 02:57:37,778 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:38,424 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-02-24 02:57:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 02:57:38,425 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2022-02-24 02:57:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:38,425 INFO L225 Difference]: With dead ends: 88 [2022-02-24 02:57:38,426 INFO L226 Difference]: Without dead ends: 82 [2022-02-24 02:57:38,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 02:57:38,427 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 76 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:38,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 34 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-02-24 02:57:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-02-24 02:57:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2022-02-24 02:57:38,441 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2022-02-24 02:57:38,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:38,442 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2022-02-24 02:57:38,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2022-02-24 02:57:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 02:57:38,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:38,443 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:38,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 02:57:38,443 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:38,443 INFO L85 PathProgramCache]: Analyzing trace with hash 584073790, now seen corresponding path program 34 times [2022-02-24 02:57:38,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:38,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722741155] [2022-02-24 02:57:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:38,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:38,447 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:38,448 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:38,945 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:38,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722741155] [2022-02-24 02:57:38,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [722741155] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:38,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:38,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-24 02:57:38,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148419901] [2022-02-24 02:57:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:38,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-24 02:57:38,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-24 02:57:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 02:57:38,946 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:39,553 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-02-24 02:57:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 02:57:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2022-02-24 02:57:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:39,554 INFO L225 Difference]: With dead ends: 90 [2022-02-24 02:57:39,554 INFO L226 Difference]: Without dead ends: 84 [2022-02-24 02:57:39,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 02:57:39,556 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:39,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 34 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:39,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-24 02:57:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2022-02-24 02:57:39,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2022-02-24 02:57:39,571 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2022-02-24 02:57:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:39,571 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2022-02-24 02:57:39,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 37 states have internal predecessors, (76), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2022-02-24 02:57:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-24 02:57:39,572 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:39,572 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:39,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 02:57:39,573 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:39,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:39,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2075076320, now seen corresponding path program 35 times [2022-02-24 02:57:39,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:39,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174600814] [2022-02-24 02:57:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:39,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:39,577 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:39,577 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:40,095 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:40,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174600814] [2022-02-24 02:57:40,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1174600814] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:40,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:40,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-24 02:57:40,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878865235] [2022-02-24 02:57:40,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:40,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-24 02:57:40,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:40,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-24 02:57:40,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 02:57:40,097 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:40,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:40,779 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-02-24 02:57:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 02:57:40,780 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2022-02-24 02:57:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:40,780 INFO L225 Difference]: With dead ends: 92 [2022-02-24 02:57:40,780 INFO L226 Difference]: Without dead ends: 86 [2022-02-24 02:57:40,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 02:57:40,781 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 80 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:40,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 34 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-24 02:57:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2022-02-24 02:57:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-02-24 02:57:40,795 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2022-02-24 02:57:40,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:40,796 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-02-24 02:57:40,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-02-24 02:57:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 02:57:40,796 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:40,796 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:40,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 02:57:40,797 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash 409430786, now seen corresponding path program 36 times [2022-02-24 02:57:40,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:40,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540481347] [2022-02-24 02:57:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:40,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:40,801 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:40,801 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:41,417 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:41,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540481347] [2022-02-24 02:57:41,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [540481347] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:41,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:41,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-24 02:57:41,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640772454] [2022-02-24 02:57:41,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:41,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-24 02:57:41,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-24 02:57:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 02:57:41,420 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:42,103 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2022-02-24 02:57:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-24 02:57:42,103 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2022-02-24 02:57:42,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:42,104 INFO L225 Difference]: With dead ends: 94 [2022-02-24 02:57:42,104 INFO L226 Difference]: Without dead ends: 88 [2022-02-24 02:57:42,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 02:57:42,105 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 82 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:42,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 39 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:42,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-02-24 02:57:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-02-24 02:57:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2022-02-24 02:57:42,123 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2022-02-24 02:57:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:42,123 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2022-02-24 02:57:42,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 39 states have internal predecessors, (80), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2022-02-24 02:57:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 02:57:42,124 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:42,124 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:42,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 02:57:42,124 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1746874020, now seen corresponding path program 37 times [2022-02-24 02:57:42,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:42,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947525436] [2022-02-24 02:57:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:42,128 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:42,129 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:42,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:42,681 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:42,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947525436] [2022-02-24 02:57:42,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [947525436] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:42,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:42,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-24 02:57:42,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300313866] [2022-02-24 02:57:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:42,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-24 02:57:42,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-24 02:57:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 02:57:42,682 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 41 states, 41 states have (on average 2.0) internal successors, (82), 40 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:43,389 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2022-02-24 02:57:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 02:57:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.0) internal successors, (82), 40 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2022-02-24 02:57:43,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:43,390 INFO L225 Difference]: With dead ends: 96 [2022-02-24 02:57:43,390 INFO L226 Difference]: Without dead ends: 90 [2022-02-24 02:57:43,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 02:57:43,392 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:43,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 39 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-24 02:57:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-02-24 02:57:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0119047619047619) internal successors, (85), 84 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2022-02-24 02:57:43,408 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2022-02-24 02:57:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:43,408 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2022-02-24 02:57:43,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.0) internal successors, (82), 40 states have internal predecessors, (82), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2022-02-24 02:57:43,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 02:57:43,408 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:43,409 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:43,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 02:57:43,409 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:43,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1460366906, now seen corresponding path program 38 times [2022-02-24 02:57:43,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:43,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887690251] [2022-02-24 02:57:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:43,413 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:43,414 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:43,998 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:43,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887690251] [2022-02-24 02:57:43,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1887690251] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:43,998 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:43,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-24 02:57:43,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918686162] [2022-02-24 02:57:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:43,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-24 02:57:43,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:43,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-24 02:57:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 02:57:44,000 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 42 states, 42 states have (on average 2.0) internal successors, (84), 41 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:44,772 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2022-02-24 02:57:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-24 02:57:44,772 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 41 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2022-02-24 02:57:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:44,773 INFO L225 Difference]: With dead ends: 98 [2022-02-24 02:57:44,773 INFO L226 Difference]: Without dead ends: 92 [2022-02-24 02:57:44,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 02:57:44,775 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 86 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:44,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 49 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:44,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-02-24 02:57:44,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2022-02-24 02:57:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0116279069767442) internal successors, (87), 86 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2022-02-24 02:57:44,793 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2022-02-24 02:57:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:44,794 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2022-02-24 02:57:44,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 41 states have internal predecessors, (84), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2022-02-24 02:57:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-24 02:57:44,794 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:44,794 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:44,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 02:57:44,795 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:44,795 INFO L85 PathProgramCache]: Analyzing trace with hash 167621736, now seen corresponding path program 39 times [2022-02-24 02:57:44,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:44,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470369155] [2022-02-24 02:57:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:44,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:44,799 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:44,799 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:45,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:45,462 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:45,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470369155] [2022-02-24 02:57:45,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [470369155] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:45,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:45,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-24 02:57:45,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008617042] [2022-02-24 02:57:45,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:45,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-24 02:57:45,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-24 02:57:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:57:45,464 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:46,275 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2022-02-24 02:57:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 02:57:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2022-02-24 02:57:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:46,276 INFO L225 Difference]: With dead ends: 100 [2022-02-24 02:57:46,276 INFO L226 Difference]: Without dead ends: 94 [2022-02-24 02:57:46,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 02:57:46,278 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 88 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:46,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 39 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-24 02:57:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2022-02-24 02:57:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 88 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2022-02-24 02:57:46,295 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2022-02-24 02:57:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:46,295 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2022-02-24 02:57:46,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0) internal successors, (86), 42 states have internal predecessors, (86), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2022-02-24 02:57:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-24 02:57:46,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:46,296 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:46,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-24 02:57:46,296 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:46,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1296610954, now seen corresponding path program 40 times [2022-02-24 02:57:46,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:46,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896319627] [2022-02-24 02:57:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:46,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:46,301 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:46,301 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:46,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:46,930 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:46,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896319627] [2022-02-24 02:57:46,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [896319627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:46,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:46,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-24 02:57:46,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237202450] [2022-02-24 02:57:46,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:46,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-24 02:57:46,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:46,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-24 02:57:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 02:57:46,932 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand has 44 states, 44 states have (on average 2.0) internal successors, (88), 43 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:47,801 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2022-02-24 02:57:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-24 02:57:47,802 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0) internal successors, (88), 43 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2022-02-24 02:57:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:47,802 INFO L225 Difference]: With dead ends: 102 [2022-02-24 02:57:47,802 INFO L226 Difference]: Without dead ends: 96 [2022-02-24 02:57:47,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 02:57:47,803 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 90 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:47,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 34 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-24 02:57:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2022-02-24 02:57:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.011111111111111) internal successors, (91), 90 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2022-02-24 02:57:47,818 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2022-02-24 02:57:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:47,819 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2022-02-24 02:57:47,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0) internal successors, (88), 43 states have internal predecessors, (88), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2022-02-24 02:57:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-02-24 02:57:47,819 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:47,819 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:47,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-24 02:57:47,820 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -371476436, now seen corresponding path program 41 times [2022-02-24 02:57:47,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:47,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104162905] [2022-02-24 02:57:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:47,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:47,826 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:47,826 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:48,481 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:48,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104162905] [2022-02-24 02:57:48,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2104162905] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:48,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:48,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-24 02:57:48,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985967987] [2022-02-24 02:57:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:48,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-24 02:57:48,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-24 02:57:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 02:57:48,483 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:49,331 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2022-02-24 02:57:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-24 02:57:49,332 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2022-02-24 02:57:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:49,332 INFO L225 Difference]: With dead ends: 104 [2022-02-24 02:57:49,332 INFO L226 Difference]: Without dead ends: 98 [2022-02-24 02:57:49,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 02:57:49,333 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 92 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:49,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 29 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-02-24 02:57:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-02-24 02:57:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 92 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2022-02-24 02:57:49,354 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2022-02-24 02:57:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:49,354 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2022-02-24 02:57:49,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2022-02-24 02:57:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-24 02:57:49,355 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:49,355 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:49,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-24 02:57:49,355 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:49,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:49,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1380656818, now seen corresponding path program 42 times [2022-02-24 02:57:49,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:49,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327613163] [2022-02-24 02:57:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:49,360 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:49,360 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:50,096 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:50,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327613163] [2022-02-24 02:57:50,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1327613163] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:50,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:50,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-24 02:57:50,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176960984] [2022-02-24 02:57:50,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:50,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-24 02:57:50,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:50,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-24 02:57:50,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 02:57:50,098 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 46 states, 46 states have (on average 2.0) internal successors, (92), 45 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:51,053 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2022-02-24 02:57:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-24 02:57:51,053 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0) internal successors, (92), 45 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2022-02-24 02:57:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:51,054 INFO L225 Difference]: With dead ends: 106 [2022-02-24 02:57:51,054 INFO L226 Difference]: Without dead ends: 100 [2022-02-24 02:57:51,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 02:57:51,056 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 94 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:51,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 34 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:51,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-24 02:57:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-02-24 02:57:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2022-02-24 02:57:51,077 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2022-02-24 02:57:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:51,078 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2022-02-24 02:57:51,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0) internal successors, (92), 45 states have internal predecessors, (92), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2022-02-24 02:57:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-24 02:57:51,079 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:51,079 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:51,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-24 02:57:51,079 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash -540395024, now seen corresponding path program 43 times [2022-02-24 02:57:51,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:51,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798662878] [2022-02-24 02:57:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:51,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:51,084 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:51,084 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:51,841 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:51,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798662878] [2022-02-24 02:57:51,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1798662878] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:51,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:51,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-24 02:57:51,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170218035] [2022-02-24 02:57:51,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:51,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-24 02:57:51,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:51,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-24 02:57:51,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 02:57:51,843 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:52,757 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2022-02-24 02:57:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-24 02:57:52,758 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2022-02-24 02:57:52,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:52,758 INFO L225 Difference]: With dead ends: 108 [2022-02-24 02:57:52,758 INFO L226 Difference]: Without dead ends: 102 [2022-02-24 02:57:52,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 02:57:52,760 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 96 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:52,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 44 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-02-24 02:57:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2022-02-24 02:57:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0104166666666667) internal successors, (97), 96 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2022-02-24 02:57:52,775 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2022-02-24 02:57:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:52,776 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2022-02-24 02:57:52,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0) internal successors, (94), 46 states have internal predecessors, (94), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2022-02-24 02:57:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-24 02:57:52,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:52,776 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:52,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-24 02:57:52,777 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:52,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:52,777 INFO L85 PathProgramCache]: Analyzing trace with hash -502662638, now seen corresponding path program 44 times [2022-02-24 02:57:52,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:52,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541725178] [2022-02-24 02:57:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:52,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:52,782 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:52,782 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:53,592 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:53,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541725178] [2022-02-24 02:57:53,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [541725178] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:53,592 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:53,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-24 02:57:53,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428707576] [2022-02-24 02:57:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:53,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-24 02:57:53,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-24 02:57:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 02:57:53,594 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 48 states, 48 states have (on average 2.0) internal successors, (96), 47 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:54,539 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2022-02-24 02:57:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-24 02:57:54,540 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0) internal successors, (96), 47 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2022-02-24 02:57:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:54,540 INFO L225 Difference]: With dead ends: 110 [2022-02-24 02:57:54,540 INFO L226 Difference]: Without dead ends: 104 [2022-02-24 02:57:54,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 02:57:54,542 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 98 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:54,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 19 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-24 02:57:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-02-24 02:57:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.010204081632653) internal successors, (99), 98 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2022-02-24 02:57:54,564 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2022-02-24 02:57:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:54,564 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2022-02-24 02:57:54,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0) internal successors, (96), 47 states have internal predecessors, (96), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2022-02-24 02:57:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-24 02:57:54,565 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:54,565 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:54,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-24 02:57:54,565 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:54,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1398421940, now seen corresponding path program 45 times [2022-02-24 02:57:54,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:54,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058507213] [2022-02-24 02:57:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:54,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:54,571 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:54,571 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:55,354 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:55,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058507213] [2022-02-24 02:57:55,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1058507213] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:55,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:55,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-24 02:57:55,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890308050] [2022-02-24 02:57:55,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:55,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-24 02:57:55,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:55,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-24 02:57:55,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 02:57:55,355 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:56,316 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2022-02-24 02:57:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-24 02:57:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2022-02-24 02:57:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:56,317 INFO L225 Difference]: With dead ends: 112 [2022-02-24 02:57:56,317 INFO L226 Difference]: Without dead ends: 106 [2022-02-24 02:57:56,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 02:57:56,318 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 100 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:56,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 54 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-24 02:57:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2022-02-24 02:57:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2022-02-24 02:57:56,338 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2022-02-24 02:57:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:56,338 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2022-02-24 02:57:56,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 48 states have internal predecessors, (98), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2022-02-24 02:57:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-24 02:57:56,339 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:56,339 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:56,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-24 02:57:56,339 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:56,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1315366698, now seen corresponding path program 46 times [2022-02-24 02:57:56,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:56,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814438707] [2022-02-24 02:57:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:56,343 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:56,343 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:57,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:57,162 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:57,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814438707] [2022-02-24 02:57:57,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1814438707] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:57,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:57,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-24 02:57:57,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151096842] [2022-02-24 02:57:57,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:57,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-24 02:57:57,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:57,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-24 02:57:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 02:57:57,164 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand has 50 states, 50 states have (on average 2.0) internal successors, (100), 49 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:58,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:57:58,162 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2022-02-24 02:57:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-24 02:57:58,163 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.0) internal successors, (100), 49 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2022-02-24 02:57:58,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:57:58,163 INFO L225 Difference]: With dead ends: 114 [2022-02-24 02:57:58,163 INFO L226 Difference]: Without dead ends: 108 [2022-02-24 02:57:58,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 02:57:58,164 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:57:58,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 39 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:57:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-24 02:57:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2022-02-24 02:57:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0098039215686274) internal successors, (103), 102 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2022-02-24 02:57:58,183 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2022-02-24 02:57:58,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:57:58,183 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2022-02-24 02:57:58,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.0) internal successors, (100), 49 states have internal predecessors, (100), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:57:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2022-02-24 02:57:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-24 02:57:58,184 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:57:58,184 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:57:58,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-24 02:57:58,184 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:57:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:57:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2073868152, now seen corresponding path program 47 times [2022-02-24 02:57:58,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:57:58,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588651857] [2022-02-24 02:57:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:57:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:57:58,188 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:57:58,188 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:57:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:59,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:57:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:57:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:57:59,021 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:57:59,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588651857] [2022-02-24 02:57:59,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1588651857] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:57:59,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:57:59,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-24 02:57:59,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767870744] [2022-02-24 02:57:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:57:59,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-24 02:57:59,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:57:59,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-24 02:57:59,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 02:57:59,023 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:00,068 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2022-02-24 02:58:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-24 02:58:00,068 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2022-02-24 02:58:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:00,069 INFO L225 Difference]: With dead ends: 116 [2022-02-24 02:58:00,069 INFO L226 Difference]: Without dead ends: 110 [2022-02-24 02:58:00,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 02:58:00,070 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 104 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:00,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 34 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-24 02:58:00,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2022-02-24 02:58:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0096153846153846) internal successors, (105), 104 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2022-02-24 02:58:00,091 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2022-02-24 02:58:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:00,092 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2022-02-24 02:58:00,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0) internal successors, (102), 50 states have internal predecessors, (102), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:00,092 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2022-02-24 02:58:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-24 02:58:00,092 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:00,093 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:00,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-24 02:58:00,093 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash -751618662, now seen corresponding path program 48 times [2022-02-24 02:58:00,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:00,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910263124] [2022-02-24 02:58:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:00,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:00,098 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:00,098 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:00,978 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:00,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910263124] [2022-02-24 02:58:00,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [910263124] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:00,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:00,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-24 02:58:00,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158090636] [2022-02-24 02:58:00,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:00,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-24 02:58:00,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:00,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-24 02:58:00,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 02:58:00,981 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand has 52 states, 52 states have (on average 2.0) internal successors, (104), 51 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:02,054 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2022-02-24 02:58:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-24 02:58:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0) internal successors, (104), 51 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2022-02-24 02:58:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:02,056 INFO L225 Difference]: With dead ends: 118 [2022-02-24 02:58:02,056 INFO L226 Difference]: Without dead ends: 112 [2022-02-24 02:58:02,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 02:58:02,067 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 106 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:02,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 44 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-24 02:58:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2022-02-24 02:58:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.009433962264151) internal successors, (107), 106 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2022-02-24 02:58:02,093 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2022-02-24 02:58:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:02,093 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2022-02-24 02:58:02,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0) internal successors, (104), 51 states have internal predecessors, (104), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:02,093 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2022-02-24 02:58:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-24 02:58:02,094 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:02,094 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:02,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-24 02:58:02,094 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1625115844, now seen corresponding path program 49 times [2022-02-24 02:58:02,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:02,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408728722] [2022-02-24 02:58:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:02,099 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:02,099 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:03,059 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:03,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408728722] [2022-02-24 02:58:03,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [408728722] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:03,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:03,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-24 02:58:03,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603692827] [2022-02-24 02:58:03,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:03,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-24 02:58:03,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-24 02:58:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 02:58:03,061 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand has 53 states, 53 states have (on average 2.0) internal successors, (106), 52 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:04,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:04,193 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2022-02-24 02:58:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-24 02:58:04,193 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0) internal successors, (106), 52 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2022-02-24 02:58:04,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:04,194 INFO L225 Difference]: With dead ends: 120 [2022-02-24 02:58:04,194 INFO L226 Difference]: Without dead ends: 114 [2022-02-24 02:58:04,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 02:58:04,196 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 108 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:04,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 34 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:04,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-24 02:58:04,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2022-02-24 02:58:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 108 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2022-02-24 02:58:04,223 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2022-02-24 02:58:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:04,223 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2022-02-24 02:58:04,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0) internal successors, (106), 52 states have internal predecessors, (106), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:04,223 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2022-02-24 02:58:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-24 02:58:04,224 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:04,224 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:04,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-24 02:58:04,224 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:04,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:04,224 INFO L85 PathProgramCache]: Analyzing trace with hash 757682270, now seen corresponding path program 50 times [2022-02-24 02:58:04,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:04,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850985709] [2022-02-24 02:58:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:04,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:04,228 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:04,228 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:05,209 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:05,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850985709] [2022-02-24 02:58:05,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1850985709] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:05,210 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:05,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-24 02:58:05,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609588334] [2022-02-24 02:58:05,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:05,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-24 02:58:05,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-24 02:58:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 02:58:05,212 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:06,383 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2022-02-24 02:58:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-24 02:58:06,384 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2022-02-24 02:58:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:06,385 INFO L225 Difference]: With dead ends: 122 [2022-02-24 02:58:06,385 INFO L226 Difference]: Without dead ends: 116 [2022-02-24 02:58:06,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 02:58:06,386 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 110 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:06,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 34 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:06,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-02-24 02:58:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-02-24 02:58:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.009090909090909) internal successors, (111), 110 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2022-02-24 02:58:06,414 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2022-02-24 02:58:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:06,414 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2022-02-24 02:58:06,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2022-02-24 02:58:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-24 02:58:06,415 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:06,415 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:06,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-24 02:58:06,415 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:06,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1409101056, now seen corresponding path program 51 times [2022-02-24 02:58:06,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:06,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643685765] [2022-02-24 02:58:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:06,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:06,420 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:06,420 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:07,391 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:07,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643685765] [2022-02-24 02:58:07,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1643685765] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:07,391 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:07,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-24 02:58:07,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360346925] [2022-02-24 02:58:07,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:07,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-24 02:58:07,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-24 02:58:07,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 02:58:07,392 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:08,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:08,569 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2022-02-24 02:58:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-24 02:58:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2022-02-24 02:58:08,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:08,570 INFO L225 Difference]: With dead ends: 124 [2022-02-24 02:58:08,570 INFO L226 Difference]: Without dead ends: 118 [2022-02-24 02:58:08,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 02:58:08,571 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 112 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:08,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 39 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-24 02:58:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-02-24 02:58:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0089285714285714) internal successors, (113), 112 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2022-02-24 02:58:08,593 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2022-02-24 02:58:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:08,593 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2022-02-24 02:58:08,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0) internal successors, (110), 54 states have internal predecessors, (110), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2022-02-24 02:58:08,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-24 02:58:08,594 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:08,594 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:08,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-24 02:58:08,594 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:08,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:08,594 INFO L85 PathProgramCache]: Analyzing trace with hash 357329186, now seen corresponding path program 52 times [2022-02-24 02:58:08,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:08,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859727386] [2022-02-24 02:58:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:08,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:08,599 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:08,599 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:09,593 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:09,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859727386] [2022-02-24 02:58:09,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1859727386] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:09,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:09,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-24 02:58:09,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688546220] [2022-02-24 02:58:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:09,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-24 02:58:09,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-24 02:58:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 02:58:09,595 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 56 states, 56 states have (on average 2.0) internal successors, (112), 55 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:10,823 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2022-02-24 02:58:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-24 02:58:10,823 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0) internal successors, (112), 55 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2022-02-24 02:58:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:10,824 INFO L225 Difference]: With dead ends: 126 [2022-02-24 02:58:10,824 INFO L226 Difference]: Without dead ends: 120 [2022-02-24 02:58:10,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-02-24 02:58:10,825 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 114 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:10,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 29 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-24 02:58:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-02-24 02:58:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0087719298245614) internal successors, (115), 114 states have internal predecessors, (115), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2022-02-24 02:58:10,856 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2022-02-24 02:58:10,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:10,856 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2022-02-24 02:58:10,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0) internal successors, (112), 55 states have internal predecessors, (112), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2022-02-24 02:58:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-24 02:58:10,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:10,857 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:10,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-24 02:58:10,857 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1078123324, now seen corresponding path program 53 times [2022-02-24 02:58:10,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:10,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365765980] [2022-02-24 02:58:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:10,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:10,862 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:10,862 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:11,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:11,936 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:11,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365765980] [2022-02-24 02:58:11,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [365765980] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:11,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:11,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-24 02:58:11,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802508020] [2022-02-24 02:58:11,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:11,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-24 02:58:11,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-24 02:58:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 02:58:11,938 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:13,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:13,230 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2022-02-24 02:58:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-24 02:58:13,231 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2022-02-24 02:58:13,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:13,231 INFO L225 Difference]: With dead ends: 128 [2022-02-24 02:58:13,231 INFO L226 Difference]: Without dead ends: 122 [2022-02-24 02:58:13,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-02-24 02:58:13,232 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 116 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:13,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 49 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:13,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-24 02:58:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-02-24 02:58:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0086206896551724) internal successors, (117), 116 states have internal predecessors, (117), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2022-02-24 02:58:13,264 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2022-02-24 02:58:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:13,264 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2022-02-24 02:58:13,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2022-02-24 02:58:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-24 02:58:13,265 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:13,265 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:13,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-24 02:58:13,265 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:13,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1863483418, now seen corresponding path program 54 times [2022-02-24 02:58:13,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:13,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357307089] [2022-02-24 02:58:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:13,270 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:13,270 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:14,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:14,430 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:14,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357307089] [2022-02-24 02:58:14,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [357307089] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:14,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:14,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-24 02:58:14,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68810065] [2022-02-24 02:58:14,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-24 02:58:14,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-24 02:58:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 02:58:14,432 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand has 58 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:15,732 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2022-02-24 02:58:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-24 02:58:15,732 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2022-02-24 02:58:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:15,733 INFO L225 Difference]: With dead ends: 130 [2022-02-24 02:58:15,733 INFO L226 Difference]: Without dead ends: 124 [2022-02-24 02:58:15,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-02-24 02:58:15,734 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:15,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 29 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-24 02:58:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2022-02-24 02:58:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 118 states have internal predecessors, (119), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2022-02-24 02:58:15,760 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2022-02-24 02:58:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:15,760 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2022-02-24 02:58:15,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0) internal successors, (116), 57 states have internal predecessors, (116), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2022-02-24 02:58:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-02-24 02:58:15,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:15,761 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:15,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-24 02:58:15,761 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash -680289656, now seen corresponding path program 55 times [2022-02-24 02:58:15,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:15,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103052114] [2022-02-24 02:58:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:15,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:15,767 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:15,767 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:16,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:16,921 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:16,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103052114] [2022-02-24 02:58:16,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103052114] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:16,922 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:16,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-24 02:58:16,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379846167] [2022-02-24 02:58:16,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:16,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-24 02:58:16,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-24 02:58:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 02:58:16,929 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand has 59 states, 59 states have (on average 2.0) internal successors, (118), 58 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:18,298 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2022-02-24 02:58:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-24 02:58:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0) internal successors, (118), 58 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2022-02-24 02:58:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:18,299 INFO L225 Difference]: With dead ends: 132 [2022-02-24 02:58:18,299 INFO L226 Difference]: Without dead ends: 126 [2022-02-24 02:58:18,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-02-24 02:58:18,301 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 120 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:18,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 49 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:18,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-24 02:58:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2022-02-24 02:58:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0083333333333333) internal successors, (121), 120 states have internal predecessors, (121), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2022-02-24 02:58:18,323 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2022-02-24 02:58:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:18,324 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2022-02-24 02:58:18,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0) internal successors, (118), 58 states have internal predecessors, (118), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2022-02-24 02:58:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-24 02:58:18,324 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:18,324 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:18,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-24 02:58:18,324 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1797417814, now seen corresponding path program 56 times [2022-02-24 02:58:18,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:18,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108087886] [2022-02-24 02:58:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:18,330 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:18,330 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:19,535 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:19,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108087886] [2022-02-24 02:58:19,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [108087886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:19,535 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:19,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-24 02:58:19,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000681246] [2022-02-24 02:58:19,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:19,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-24 02:58:19,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-24 02:58:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 02:58:19,537 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand has 60 states, 60 states have (on average 2.0) internal successors, (120), 59 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:20,930 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2022-02-24 02:58:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-24 02:58:20,930 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0) internal successors, (120), 59 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2022-02-24 02:58:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:20,931 INFO L225 Difference]: With dead ends: 134 [2022-02-24 02:58:20,931 INFO L226 Difference]: Without dead ends: 128 [2022-02-24 02:58:20,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-02-24 02:58:20,933 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 122 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:20,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 44 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:20,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-02-24 02:58:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2022-02-24 02:58:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0081967213114753) internal successors, (123), 122 states have internal predecessors, (123), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2022-02-24 02:58:20,976 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2022-02-24 02:58:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:20,977 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2022-02-24 02:58:20,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.0) internal successors, (120), 59 states have internal predecessors, (120), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2022-02-24 02:58:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-24 02:58:20,977 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:20,978 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:20,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-24 02:58:20,978 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1615753652, now seen corresponding path program 57 times [2022-02-24 02:58:20,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:20,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836452172] [2022-02-24 02:58:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:20,983 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:20,983 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:22,160 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:22,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836452172] [2022-02-24 02:58:22,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1836452172] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:22,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:22,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-24 02:58:22,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141014197] [2022-02-24 02:58:22,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:22,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-24 02:58:22,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-24 02:58:22,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 02:58:22,162 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 61 states, 61 states have (on average 2.0) internal successors, (122), 60 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:23,593 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2022-02-24 02:58:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-24 02:58:23,594 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0) internal successors, (122), 60 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2022-02-24 02:58:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:23,595 INFO L225 Difference]: With dead ends: 136 [2022-02-24 02:58:23,595 INFO L226 Difference]: Without dead ends: 130 [2022-02-24 02:58:23,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-02-24 02:58:23,597 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 124 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:23,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 39 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-02-24 02:58:23,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-02-24 02:58:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0080645161290323) internal successors, (125), 124 states have internal predecessors, (125), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2022-02-24 02:58:23,632 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2022-02-24 02:58:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:23,632 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2022-02-24 02:58:23,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0) internal successors, (122), 60 states have internal predecessors, (122), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2022-02-24 02:58:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-24 02:58:23,633 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:23,633 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:23,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-24 02:58:23,634 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:23,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1164814190, now seen corresponding path program 58 times [2022-02-24 02:58:23,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:23,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994594064] [2022-02-24 02:58:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:23,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:23,639 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:23,639 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:24,948 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:24,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994594064] [2022-02-24 02:58:24,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1994594064] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:24,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:24,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-24 02:58:24,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110123924] [2022-02-24 02:58:24,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:24,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-24 02:58:24,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-24 02:58:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 02:58:24,950 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand has 62 states, 62 states have (on average 2.0) internal successors, (124), 61 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:26,486 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2022-02-24 02:58:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-24 02:58:26,487 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0) internal successors, (124), 61 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2022-02-24 02:58:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:26,487 INFO L225 Difference]: With dead ends: 138 [2022-02-24 02:58:26,487 INFO L226 Difference]: Without dead ends: 132 [2022-02-24 02:58:26,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-02-24 02:58:26,489 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 126 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:26,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 39 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-02-24 02:58:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2022-02-24 02:58:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 states have internal predecessors, (127), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2022-02-24 02:58:26,513 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2022-02-24 02:58:26,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:26,514 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2022-02-24 02:58:26,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.0) internal successors, (124), 61 states have internal predecessors, (124), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2022-02-24 02:58:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-24 02:58:26,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:26,515 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:26,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-24 02:58:26,515 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1820852240, now seen corresponding path program 59 times [2022-02-24 02:58:26,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:26,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85712879] [2022-02-24 02:58:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:26,520 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:26,520 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:27,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:27,766 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:27,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85712879] [2022-02-24 02:58:27,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [85712879] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:27,767 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:27,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-24 02:58:27,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065620506] [2022-02-24 02:58:27,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:27,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-24 02:58:27,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:27,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-24 02:58:27,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 02:58:27,768 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:29,290 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2022-02-24 02:58:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-24 02:58:29,290 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2022-02-24 02:58:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:29,291 INFO L225 Difference]: With dead ends: 140 [2022-02-24 02:58:29,291 INFO L226 Difference]: Without dead ends: 134 [2022-02-24 02:58:29,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-02-24 02:58:29,293 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 128 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:29,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 44 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:29,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-24 02:58:29,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-02-24 02:58:29,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.0078125) internal successors, (129), 128 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2022-02-24 02:58:29,331 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2022-02-24 02:58:29,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:29,331 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2022-02-24 02:58:29,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:29,332 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2022-02-24 02:58:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-24 02:58:29,332 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:29,332 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:29,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-24 02:58:29,332 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash 913225778, now seen corresponding path program 60 times [2022-02-24 02:58:29,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:29,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426643689] [2022-02-24 02:58:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:29,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:29,344 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:29,344 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:30,677 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:30,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426643689] [2022-02-24 02:58:30,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [426643689] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:30,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:30,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-24 02:58:30,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664688256] [2022-02-24 02:58:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:30,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-24 02:58:30,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:30,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-24 02:58:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 02:58:30,679 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand has 64 states, 64 states have (on average 2.0) internal successors, (128), 63 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:32,287 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2022-02-24 02:58:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-24 02:58:32,287 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.0) internal successors, (128), 63 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132 [2022-02-24 02:58:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:32,288 INFO L225 Difference]: With dead ends: 142 [2022-02-24 02:58:32,288 INFO L226 Difference]: Without dead ends: 136 [2022-02-24 02:58:32,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2022-02-24 02:58:32,290 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 130 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:32,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 34 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-02-24 02:58:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2022-02-24 02:58:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.0076923076923077) internal successors, (131), 130 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2022-02-24 02:58:32,328 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2022-02-24 02:58:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:32,328 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2022-02-24 02:58:32,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.0) internal successors, (128), 63 states have internal predecessors, (128), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2022-02-24 02:58:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-02-24 02:58:32,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:32,329 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:32,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-24 02:58:32,329 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash 562556884, now seen corresponding path program 61 times [2022-02-24 02:58:32,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:32,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880431462] [2022-02-24 02:58:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:32,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:32,334 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:32,335 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:33,641 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:33,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880431462] [2022-02-24 02:58:33,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [880431462] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:33,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:33,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-24 02:58:33,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786579006] [2022-02-24 02:58:33,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:33,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-24 02:58:33,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-24 02:58:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 02:58:33,643 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand has 65 states, 65 states have (on average 2.0) internal successors, (130), 64 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:35,252 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2022-02-24 02:58:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-24 02:58:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0) internal successors, (130), 64 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2022-02-24 02:58:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:35,253 INFO L225 Difference]: With dead ends: 144 [2022-02-24 02:58:35,253 INFO L226 Difference]: Without dead ends: 138 [2022-02-24 02:58:35,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2022-02-24 02:58:35,255 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 132 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:35,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 29 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-02-24 02:58:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2022-02-24 02:58:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 132 states have (on average 1.0075757575757576) internal successors, (133), 132 states have internal predecessors, (133), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2022-02-24 02:58:35,295 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2022-02-24 02:58:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:35,295 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2022-02-24 02:58:35,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0) internal successors, (130), 64 states have internal predecessors, (130), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2022-02-24 02:58:35,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-24 02:58:35,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:35,296 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:35,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-24 02:58:35,297 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1422801162, now seen corresponding path program 62 times [2022-02-24 02:58:35,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:35,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100309280] [2022-02-24 02:58:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:35,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:35,302 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:35,302 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:36,680 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:36,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100309280] [2022-02-24 02:58:36,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1100309280] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:36,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:36,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-24 02:58:36,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460655879] [2022-02-24 02:58:36,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:36,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-24 02:58:36,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-24 02:58:36,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 02:58:36,683 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand has 66 states, 66 states have (on average 2.0) internal successors, (132), 65 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:38,372 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2022-02-24 02:58:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-24 02:58:38,372 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0) internal successors, (132), 65 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2022-02-24 02:58:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:38,373 INFO L225 Difference]: With dead ends: 146 [2022-02-24 02:58:38,373 INFO L226 Difference]: Without dead ends: 140 [2022-02-24 02:58:38,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2022-02-24 02:58:38,374 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 134 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:38,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 59 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-02-24 02:58:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2022-02-24 02:58:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.007462686567164) internal successors, (135), 134 states have internal predecessors, (135), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2022-02-24 02:58:38,404 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2022-02-24 02:58:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:38,404 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2022-02-24 02:58:38,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0) internal successors, (132), 65 states have internal predecessors, (132), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2022-02-24 02:58:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-02-24 02:58:38,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:38,405 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:38,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-24 02:58:38,405 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:38,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1908563352, now seen corresponding path program 63 times [2022-02-24 02:58:38,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:38,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016199389] [2022-02-24 02:58:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:38,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:38,411 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:38,411 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:39,912 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:39,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016199389] [2022-02-24 02:58:39,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1016199389] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:39,913 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:39,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-24 02:58:39,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210239121] [2022-02-24 02:58:39,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:39,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-24 02:58:39,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-24 02:58:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 02:58:39,915 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand has 67 states, 67 states have (on average 2.0) internal successors, (134), 66 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:41,703 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2022-02-24 02:58:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-24 02:58:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.0) internal successors, (134), 66 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2022-02-24 02:58:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:41,704 INFO L225 Difference]: With dead ends: 148 [2022-02-24 02:58:41,704 INFO L226 Difference]: Without dead ends: 142 [2022-02-24 02:58:41,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2022-02-24 02:58:41,706 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 136 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:41,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 44 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-02-24 02:58:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2022-02-24 02:58:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.0073529411764706) internal successors, (137), 136 states have internal predecessors, (137), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2022-02-24 02:58:41,735 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2022-02-24 02:58:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:41,735 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2022-02-24 02:58:41,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.0) internal successors, (134), 66 states have internal predecessors, (134), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2022-02-24 02:58:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-02-24 02:58:41,736 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:41,736 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:41,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-24 02:58:41,736 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:41,737 INFO L85 PathProgramCache]: Analyzing trace with hash -695741510, now seen corresponding path program 64 times [2022-02-24 02:58:41,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:41,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552733826] [2022-02-24 02:58:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:41,742 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:41,742 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:43,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:43,184 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:43,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552733826] [2022-02-24 02:58:43,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1552733826] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:43,185 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:43,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-24 02:58:43,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400660340] [2022-02-24 02:58:43,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:43,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-24 02:58:43,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:43,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-24 02:58:43,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 02:58:43,187 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand has 68 states, 68 states have (on average 2.0) internal successors, (136), 67 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:44,952 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2022-02-24 02:58:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-24 02:58:44,953 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0) internal successors, (136), 67 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 140 [2022-02-24 02:58:44,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:44,953 INFO L225 Difference]: With dead ends: 150 [2022-02-24 02:58:44,953 INFO L226 Difference]: Without dead ends: 144 [2022-02-24 02:58:44,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2022-02-24 02:58:44,955 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 138 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:44,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 59 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-02-24 02:58:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2022-02-24 02:58:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0072463768115942) internal successors, (139), 138 states have internal predecessors, (139), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2022-02-24 02:58:44,996 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2022-02-24 02:58:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:44,996 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2022-02-24 02:58:44,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0) internal successors, (136), 67 states have internal predecessors, (136), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:44,996 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2022-02-24 02:58:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-02-24 02:58:44,996 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:44,996 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:44,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-24 02:58:44,997 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash 533219676, now seen corresponding path program 65 times [2022-02-24 02:58:44,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:44,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857368794] [2022-02-24 02:58:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:45,003 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:45,003 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:46,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:46,575 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:46,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857368794] [2022-02-24 02:58:46,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1857368794] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:46,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:46,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-24 02:58:46,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199166591] [2022-02-24 02:58:46,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:46,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-24 02:58:46,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-24 02:58:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 02:58:46,576 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:48,379 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2022-02-24 02:58:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-24 02:58:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2022-02-24 02:58:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:48,380 INFO L225 Difference]: With dead ends: 152 [2022-02-24 02:58:48,380 INFO L226 Difference]: Without dead ends: 146 [2022-02-24 02:58:48,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2022-02-24 02:58:48,382 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 140 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:48,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 49 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-02-24 02:58:48,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2022-02-24 02:58:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.0071428571428571) internal successors, (141), 140 states have internal predecessors, (141), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2022-02-24 02:58:48,420 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2022-02-24 02:58:48,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:48,420 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2022-02-24 02:58:48,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2022-02-24 02:58:48,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-02-24 02:58:48,421 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:48,421 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:48,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-24 02:58:48,421 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:48,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:48,421 INFO L85 PathProgramCache]: Analyzing trace with hash 448913022, now seen corresponding path program 66 times [2022-02-24 02:58:48,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:48,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025884329] [2022-02-24 02:58:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:48,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:48,425 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:48,425 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:50,032 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:50,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025884329] [2022-02-24 02:58:50,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1025884329] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:50,032 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:50,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-24 02:58:50,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123719746] [2022-02-24 02:58:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:50,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-24 02:58:50,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-24 02:58:50,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 02:58:50,034 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand has 70 states, 70 states have (on average 2.0) internal successors, (140), 69 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:51,905 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2022-02-24 02:58:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-24 02:58:51,905 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0) internal successors, (140), 69 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2022-02-24 02:58:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:51,906 INFO L225 Difference]: With dead ends: 154 [2022-02-24 02:58:51,906 INFO L226 Difference]: Without dead ends: 148 [2022-02-24 02:58:51,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2022-02-24 02:58:51,908 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:51,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 49 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-02-24 02:58:51,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2022-02-24 02:58:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2022-02-24 02:58:51,942 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2022-02-24 02:58:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:51,942 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2022-02-24 02:58:51,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.0) internal successors, (140), 69 states have internal predecessors, (140), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2022-02-24 02:58:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-02-24 02:58:51,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:51,942 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:51,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-24 02:58:51,943 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:51,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1034597152, now seen corresponding path program 67 times [2022-02-24 02:58:51,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:51,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122718369] [2022-02-24 02:58:51,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:51,948 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:51,948 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:53,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:53,575 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:53,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122718369] [2022-02-24 02:58:53,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2122718369] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:53,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:53,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-24 02:58:53,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864471485] [2022-02-24 02:58:53,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:53,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-24 02:58:53,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-24 02:58:53,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 02:58:53,577 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand has 71 states, 71 states have (on average 2.0) internal successors, (142), 70 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:55,495 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2022-02-24 02:58:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-24 02:58:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0) internal successors, (142), 70 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 146 [2022-02-24 02:58:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:55,496 INFO L225 Difference]: With dead ends: 156 [2022-02-24 02:58:55,496 INFO L226 Difference]: Without dead ends: 150 [2022-02-24 02:58:55,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-02-24 02:58:55,497 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 144 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:55,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 39 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-02-24 02:58:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2022-02-24 02:58:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.0069444444444444) internal successors, (145), 144 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2022-02-24 02:58:55,544 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2022-02-24 02:58:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:55,544 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2022-02-24 02:58:55,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0) internal successors, (142), 70 states have internal predecessors, (142), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2022-02-24 02:58:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-24 02:58:55,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:55,545 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:55,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-24 02:58:55,545 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:55,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:55,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1236330306, now seen corresponding path program 68 times [2022-02-24 02:58:55,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:55,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528584786] [2022-02-24 02:58:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:55,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:55,551 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:55,551 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:58:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:58:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:58:57,164 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:58:57,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528584786] [2022-02-24 02:58:57,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [528584786] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:58:57,164 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:58:57,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-24 02:58:57,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838286844] [2022-02-24 02:58:57,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:58:57,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-24 02:58:57,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:58:57,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-24 02:58:57,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 02:58:57,165 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand has 72 states, 72 states have (on average 2.0) internal successors, (144), 71 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:59,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:58:59,129 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2022-02-24 02:58:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-24 02:58:59,130 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 71 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2022-02-24 02:58:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:58:59,130 INFO L225 Difference]: With dead ends: 158 [2022-02-24 02:58:59,130 INFO L226 Difference]: Without dead ends: 152 [2022-02-24 02:58:59,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2022-02-24 02:58:59,131 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 146 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:58:59,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 34 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:58:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-02-24 02:58:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-02-24 02:58:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.0068493150684932) internal successors, (147), 146 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2022-02-24 02:58:59,165 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2022-02-24 02:58:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:58:59,165 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2022-02-24 02:58:59,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 71 states have internal predecessors, (144), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:58:59,165 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2022-02-24 02:58:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-02-24 02:58:59,166 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:58:59,166 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:58:59,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-24 02:58:59,166 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:58:59,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:58:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1828362980, now seen corresponding path program 69 times [2022-02-24 02:58:59,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:58:59,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493152783] [2022-02-24 02:58:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:58:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:58:59,171 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:58:59,171 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:58:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:00,796 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:00,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493152783] [2022-02-24 02:59:00,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [493152783] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:00,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:00,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-24 02:59:00,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633198893] [2022-02-24 02:59:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:00,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-24 02:59:00,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-24 02:59:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 02:59:00,798 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:02,805 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2022-02-24 02:59:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-24 02:59:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2022-02-24 02:59:02,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:02,806 INFO L225 Difference]: With dead ends: 160 [2022-02-24 02:59:02,806 INFO L226 Difference]: Without dead ends: 154 [2022-02-24 02:59:02,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2022-02-24 02:59:02,807 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 148 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:02,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 39 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-02-24 02:59:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-02-24 02:59:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0067567567567568) internal successors, (149), 148 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2022-02-24 02:59:02,848 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2022-02-24 02:59:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:02,848 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2022-02-24 02:59:02,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2022-02-24 02:59:02,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-02-24 02:59:02,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:02,849 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:02,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-24 02:59:02,849 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash -458887674, now seen corresponding path program 70 times [2022-02-24 02:59:02,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:02,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123267781] [2022-02-24 02:59:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:02,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:02,855 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:02,855 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:04,547 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:04,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123267781] [2022-02-24 02:59:04,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1123267781] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:04,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:04,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-24 02:59:04,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010608428] [2022-02-24 02:59:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:04,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-24 02:59:04,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:04,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-24 02:59:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 02:59:04,549 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:06,589 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2022-02-24 02:59:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-24 02:59:06,589 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 152 [2022-02-24 02:59:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:06,590 INFO L225 Difference]: With dead ends: 162 [2022-02-24 02:59:06,590 INFO L226 Difference]: Without dead ends: 156 [2022-02-24 02:59:06,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2022-02-24 02:59:06,592 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 150 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:06,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 34 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-02-24 02:59:06,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2022-02-24 02:59:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 150 states have internal predecessors, (151), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2022-02-24 02:59:06,625 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2022-02-24 02:59:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:06,625 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2022-02-24 02:59:06,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2022-02-24 02:59:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-02-24 02:59:06,625 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:06,625 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:06,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-24 02:59:06,626 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:06,626 INFO L85 PathProgramCache]: Analyzing trace with hash 516489384, now seen corresponding path program 71 times [2022-02-24 02:59:06,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:06,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926567939] [2022-02-24 02:59:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:06,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:06,631 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:06,631 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:08,375 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:08,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926567939] [2022-02-24 02:59:08,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1926567939] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:08,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:08,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-24 02:59:08,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327735725] [2022-02-24 02:59:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:08,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-24 02:59:08,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-24 02:59:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 02:59:08,377 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:10,523 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2022-02-24 02:59:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-24 02:59:10,523 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 154 [2022-02-24 02:59:10,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:10,524 INFO L225 Difference]: With dead ends: 164 [2022-02-24 02:59:10,524 INFO L226 Difference]: Without dead ends: 158 [2022-02-24 02:59:10,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2022-02-24 02:59:10,526 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 152 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:10,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 54 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-02-24 02:59:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2022-02-24 02:59:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 152 states have (on average 1.006578947368421) internal successors, (153), 152 states have internal predecessors, (153), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2022-02-24 02:59:10,561 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2022-02-24 02:59:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:10,561 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2022-02-24 02:59:10,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:10,561 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2022-02-24 02:59:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-02-24 02:59:10,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:10,562 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:10,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-24 02:59:10,562 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:10,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1550971594, now seen corresponding path program 72 times [2022-02-24 02:59:10,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:10,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811814045] [2022-02-24 02:59:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:10,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:10,566 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:10,566 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:12,348 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:12,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811814045] [2022-02-24 02:59:12,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1811814045] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:12,349 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:12,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-24 02:59:12,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910123024] [2022-02-24 02:59:12,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:12,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-24 02:59:12,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:12,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-24 02:59:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 02:59:12,351 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:14,517 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2022-02-24 02:59:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-24 02:59:14,517 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 156 [2022-02-24 02:59:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:14,518 INFO L225 Difference]: With dead ends: 166 [2022-02-24 02:59:14,518 INFO L226 Difference]: Without dead ends: 160 [2022-02-24 02:59:14,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2022-02-24 02:59:14,519 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 154 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:14,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 29 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-02-24 02:59:14,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2022-02-24 02:59:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.0064935064935066) internal successors, (155), 154 states have internal predecessors, (155), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2022-02-24 02:59:14,560 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2022-02-24 02:59:14,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:14,561 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2022-02-24 02:59:14,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:14,561 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2022-02-24 02:59:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-02-24 02:59:14,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:14,562 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:14,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-24 02:59:14,562 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash -744037268, now seen corresponding path program 73 times [2022-02-24 02:59:14,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:14,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530005887] [2022-02-24 02:59:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:14,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:14,568 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:14,568 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:16,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:16,393 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:16,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530005887] [2022-02-24 02:59:16,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1530005887] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:16,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:16,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-24 02:59:16,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568262785] [2022-02-24 02:59:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:16,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-24 02:59:16,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-24 02:59:16,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 02:59:16,395 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:18,616 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2022-02-24 02:59:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-24 02:59:18,616 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 158 [2022-02-24 02:59:18,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:18,617 INFO L225 Difference]: With dead ends: 168 [2022-02-24 02:59:18,617 INFO L226 Difference]: Without dead ends: 162 [2022-02-24 02:59:18,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2022-02-24 02:59:18,618 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:18,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 39 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-02-24 02:59:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2022-02-24 02:59:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 156 states have (on average 1.0064102564102564) internal successors, (157), 156 states have internal predecessors, (157), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2022-02-24 02:59:18,654 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2022-02-24 02:59:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:18,654 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2022-02-24 02:59:18,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2022-02-24 02:59:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-02-24 02:59:18,655 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:18,655 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:18,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-24 02:59:18,655 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1365636494, now seen corresponding path program 74 times [2022-02-24 02:59:18,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:18,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001797514] [2022-02-24 02:59:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:18,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:18,661 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:18,661 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:20,509 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:20,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001797514] [2022-02-24 02:59:20,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2001797514] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:20,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:20,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-24 02:59:20,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949752825] [2022-02-24 02:59:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:20,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-24 02:59:20,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-24 02:59:20,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 02:59:20,511 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:22,790 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2022-02-24 02:59:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-24 02:59:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 160 [2022-02-24 02:59:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:22,791 INFO L225 Difference]: With dead ends: 170 [2022-02-24 02:59:22,791 INFO L226 Difference]: Without dead ends: 164 [2022-02-24 02:59:22,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2022-02-24 02:59:22,793 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 158 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:22,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 54 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-24 02:59:22,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2022-02-24 02:59:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 158 states have (on average 1.0063291139240507) internal successors, (159), 158 states have internal predecessors, (159), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2022-02-24 02:59:22,828 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2022-02-24 02:59:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:22,829 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2022-02-24 02:59:22,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2022-02-24 02:59:22,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-02-24 02:59:22,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:22,829 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:22,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-24 02:59:22,830 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:22,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1537558064, now seen corresponding path program 75 times [2022-02-24 02:59:22,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:22,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732680091] [2022-02-24 02:59:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:22,836 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:22,837 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:24,741 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:24,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732680091] [2022-02-24 02:59:24,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1732680091] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:24,741 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:24,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-24 02:59:24,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857640504] [2022-02-24 02:59:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:24,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-24 02:59:24,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-24 02:59:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 02:59:24,743 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:27,074 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2022-02-24 02:59:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-24 02:59:27,074 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162 [2022-02-24 02:59:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:27,075 INFO L225 Difference]: With dead ends: 172 [2022-02-24 02:59:27,075 INFO L226 Difference]: Without dead ends: 166 [2022-02-24 02:59:27,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2022-02-24 02:59:27,077 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 160 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:27,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 44 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:27,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-02-24 02:59:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2022-02-24 02:59:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.00625) internal successors, (161), 160 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2022-02-24 02:59:27,114 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2022-02-24 02:59:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:27,114 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2022-02-24 02:59:27,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2022-02-24 02:59:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-02-24 02:59:27,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:27,115 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:27,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-24 02:59:27,115 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:27,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash -749537710, now seen corresponding path program 76 times [2022-02-24 02:59:27,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:27,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571263071] [2022-02-24 02:59:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:27,121 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:27,121 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:29,074 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:29,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571263071] [2022-02-24 02:59:29,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1571263071] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:29,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:29,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-24 02:59:29,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295651353] [2022-02-24 02:59:29,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:29,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-24 02:59:29,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-24 02:59:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 02:59:29,076 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:31,452 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2022-02-24 02:59:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-24 02:59:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 164 [2022-02-24 02:59:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:31,453 INFO L225 Difference]: With dead ends: 174 [2022-02-24 02:59:31,453 INFO L226 Difference]: Without dead ends: 168 [2022-02-24 02:59:31,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2022-02-24 02:59:31,455 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 162 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:31,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 24 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:59:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-02-24 02:59:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-02-24 02:59:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 162 states have (on average 1.0061728395061729) internal successors, (163), 162 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2022-02-24 02:59:31,503 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2022-02-24 02:59:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:31,503 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2022-02-24 02:59:31,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2022-02-24 02:59:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-02-24 02:59:31,504 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:31,504 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:31,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-24 02:59:31,504 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash 374679028, now seen corresponding path program 77 times [2022-02-24 02:59:31,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:31,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252463495] [2022-02-24 02:59:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:31,511 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:31,511 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:33,561 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:33,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252463495] [2022-02-24 02:59:33,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1252463495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:33,562 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:33,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-24 02:59:33,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126055610] [2022-02-24 02:59:33,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:33,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-24 02:59:33,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-24 02:59:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 02:59:33,564 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:36,011 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2022-02-24 02:59:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-24 02:59:36,011 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166 [2022-02-24 02:59:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:36,012 INFO L225 Difference]: With dead ends: 176 [2022-02-24 02:59:36,012 INFO L226 Difference]: Without dead ends: 170 [2022-02-24 02:59:36,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2022-02-24 02:59:36,026 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 164 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:36,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 39 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-02-24 02:59:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2022-02-24 02:59:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 1.0060975609756098) internal successors, (165), 164 states have internal predecessors, (165), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2022-02-24 02:59:36,077 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2022-02-24 02:59:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:36,077 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2022-02-24 02:59:36,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2022-02-24 02:59:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-24 02:59:36,078 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:36,078 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:36,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-24 02:59:36,078 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:36,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:36,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1584794346, now seen corresponding path program 78 times [2022-02-24 02:59:36,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:36,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84822019] [2022-02-24 02:59:36,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:36,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:36,085 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:36,085 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:38,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:38,136 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:38,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84822019] [2022-02-24 02:59:38,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [84822019] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:38,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:38,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-24 02:59:38,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491402464] [2022-02-24 02:59:38,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:38,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-24 02:59:38,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-24 02:59:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 02:59:38,138 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:40,645 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2022-02-24 02:59:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-24 02:59:40,645 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 168 [2022-02-24 02:59:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:40,646 INFO L225 Difference]: With dead ends: 178 [2022-02-24 02:59:40,646 INFO L226 Difference]: Without dead ends: 172 [2022-02-24 02:59:40,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2022-02-24 02:59:40,647 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 166 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:40,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 49 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-02-24 02:59:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2022-02-24 02:59:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 166 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2022-02-24 02:59:40,709 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2022-02-24 02:59:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:40,710 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2022-02-24 02:59:40,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2022-02-24 02:59:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-02-24 02:59:40,710 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:40,711 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:40,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-24 02:59:40,711 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:40,712 INFO L85 PathProgramCache]: Analyzing trace with hash 851936184, now seen corresponding path program 79 times [2022-02-24 02:59:40,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:40,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917744689] [2022-02-24 02:59:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:40,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:40,718 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:40,718 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:42,847 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:42,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917744689] [2022-02-24 02:59:42,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [917744689] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:42,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:42,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-24 02:59:42,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344674505] [2022-02-24 02:59:42,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:42,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-24 02:59:42,848 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:42,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-24 02:59:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 02:59:42,850 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:45,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:45,454 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2022-02-24 02:59:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-24 02:59:45,454 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 170 [2022-02-24 02:59:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:45,455 INFO L225 Difference]: With dead ends: 180 [2022-02-24 02:59:45,455 INFO L226 Difference]: Without dead ends: 174 [2022-02-24 02:59:45,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2022-02-24 02:59:45,457 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 168 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:45,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 44 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:45,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-02-24 02:59:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2022-02-24 02:59:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.005952380952381) internal successors, (169), 168 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2022-02-24 02:59:45,507 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2022-02-24 02:59:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:45,507 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2022-02-24 02:59:45,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2022-02-24 02:59:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-24 02:59:45,508 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:45,509 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:45,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-24 02:59:45,509 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1792799194, now seen corresponding path program 80 times [2022-02-24 02:59:45,509 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:45,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854786352] [2022-02-24 02:59:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:45,516 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:45,516 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:47,682 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:47,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854786352] [2022-02-24 02:59:47,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [854786352] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:47,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:47,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-24 02:59:47,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32973584] [2022-02-24 02:59:47,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:47,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-24 02:59:47,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-24 02:59:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 02:59:47,685 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:50,303 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2022-02-24 02:59:50,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-24 02:59:50,304 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172 [2022-02-24 02:59:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:50,304 INFO L225 Difference]: With dead ends: 182 [2022-02-24 02:59:50,304 INFO L226 Difference]: Without dead ends: 176 [2022-02-24 02:59:50,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2022-02-24 02:59:50,306 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 170 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:50,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 44 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-02-24 02:59:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2022-02-24 02:59:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.0058823529411764) internal successors, (171), 170 states have internal predecessors, (171), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2022-02-24 02:59:50,358 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2022-02-24 02:59:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:50,358 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2022-02-24 02:59:50,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2022-02-24 02:59:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-02-24 02:59:50,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:50,359 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:50,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-24 02:59:50,359 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:50,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -275947652, now seen corresponding path program 81 times [2022-02-24 02:59:50,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:50,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052621449] [2022-02-24 02:59:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:50,366 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:50,366 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:52,552 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:52,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052621449] [2022-02-24 02:59:52,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2052621449] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:52,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:52,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-24 02:59:52,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126272027] [2022-02-24 02:59:52,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:52,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-24 02:59:52,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-24 02:59:52,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 02:59:52,554 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:59:55,228 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2022-02-24 02:59:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-24 02:59:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 174 [2022-02-24 02:59:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:59:55,229 INFO L225 Difference]: With dead ends: 184 [2022-02-24 02:59:55,230 INFO L226 Difference]: Without dead ends: 178 [2022-02-24 02:59:55,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2022-02-24 02:59:55,231 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 172 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:59:55,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 39 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:59:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-02-24 02:59:55,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2022-02-24 02:59:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.005813953488372) internal successors, (173), 172 states have internal predecessors, (173), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2022-02-24 02:59:55,289 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2022-02-24 02:59:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:59:55,289 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2022-02-24 02:59:55,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:59:55,289 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2022-02-24 02:59:55,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-02-24 02:59:55,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:59:55,290 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:59:55,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-24 02:59:55,290 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:59:55,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:59:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash 228191390, now seen corresponding path program 82 times [2022-02-24 02:59:55,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:59:55,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592693734] [2022-02-24 02:59:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:59:55,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:59:55,296 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:59:55,296 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:59:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:57,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:59:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:59:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:59:57,573 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:59:57,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592693734] [2022-02-24 02:59:57,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [592693734] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:59:57,574 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:59:57,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-24 02:59:57,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313075722] [2022-02-24 02:59:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:59:57,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-24 02:59:57,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:59:57,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-24 02:59:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 02:59:57,576 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:00,293 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2022-02-24 03:00:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-24 03:00:00,293 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 176 [2022-02-24 03:00:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:00,294 INFO L225 Difference]: With dead ends: 186 [2022-02-24 03:00:00,294 INFO L226 Difference]: Without dead ends: 180 [2022-02-24 03:00:00,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2022-02-24 03:00:00,296 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 174 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:00,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 29 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-02-24 03:00:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2022-02-24 03:00:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0057471264367817) internal successors, (175), 174 states have internal predecessors, (175), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2022-02-24 03:00:00,349 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2022-02-24 03:00:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:00,349 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2022-02-24 03:00:00,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:00,349 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2022-02-24 03:00:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-02-24 03:00:00,349 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:00,350 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:00,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-24 03:00:00,350 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:00,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:00,350 INFO L85 PathProgramCache]: Analyzing trace with hash -625493696, now seen corresponding path program 83 times [2022-02-24 03:00:00,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:00,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716538696] [2022-02-24 03:00:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:00,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:00,357 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:00,357 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:02,662 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:02,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716538696] [2022-02-24 03:00:02,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1716538696] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:02,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:02,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-24 03:00:02,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683898332] [2022-02-24 03:00:02,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:02,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-24 03:00:02,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:02,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-24 03:00:02,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 03:00:02,665 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:05,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:05,498 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2022-02-24 03:00:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-24 03:00:05,499 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 178 [2022-02-24 03:00:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:05,500 INFO L225 Difference]: With dead ends: 188 [2022-02-24 03:00:05,500 INFO L226 Difference]: Without dead ends: 182 [2022-02-24 03:00:05,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2022-02-24 03:00:05,502 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 176 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:05,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 39 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:05,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-24 03:00:05,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2022-02-24 03:00:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 176 states have (on average 1.0056818181818181) internal successors, (177), 176 states have internal predecessors, (177), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2022-02-24 03:00:05,556 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2022-02-24 03:00:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:05,557 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2022-02-24 03:00:05,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2022-02-24 03:00:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-02-24 03:00:05,558 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:05,558 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:05,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-24 03:00:05,558 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:05,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:05,558 INFO L85 PathProgramCache]: Analyzing trace with hash -678107806, now seen corresponding path program 84 times [2022-02-24 03:00:05,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:05,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2284928] [2022-02-24 03:00:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:05,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:05,566 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:05,566 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:07,933 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:07,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2284928] [2022-02-24 03:00:07,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2284928] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:07,933 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:07,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-24 03:00:07,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203550657] [2022-02-24 03:00:07,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:07,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-24 03:00:07,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-24 03:00:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 03:00:07,935 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:10,795 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2022-02-24 03:00:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-24 03:00:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 180 [2022-02-24 03:00:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:10,796 INFO L225 Difference]: With dead ends: 190 [2022-02-24 03:00:10,796 INFO L226 Difference]: Without dead ends: 184 [2022-02-24 03:00:10,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2022-02-24 03:00:10,799 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 178 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:10,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 54 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-24 03:00:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-02-24 03:00:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.0056179775280898) internal successors, (179), 178 states have internal predecessors, (179), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2022-02-24 03:00:10,858 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2022-02-24 03:00:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:10,859 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2022-02-24 03:00:10,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2022-02-24 03:00:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-02-24 03:00:10,860 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:10,860 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:10,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-24 03:00:10,860 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 299340036, now seen corresponding path program 85 times [2022-02-24 03:00:10,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:10,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145700509] [2022-02-24 03:00:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:10,866 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:10,867 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:13,274 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:13,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145700509] [2022-02-24 03:00:13,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1145700509] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:13,274 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:13,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-24 03:00:13,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646095029] [2022-02-24 03:00:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:13,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-24 03:00:13,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:13,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-24 03:00:13,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 03:00:13,276 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:16,275 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2022-02-24 03:00:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-24 03:00:16,275 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 182 [2022-02-24 03:00:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:16,276 INFO L225 Difference]: With dead ends: 192 [2022-02-24 03:00:16,276 INFO L226 Difference]: Without dead ends: 186 [2022-02-24 03:00:16,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2022-02-24 03:00:16,278 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 180 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:16,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 44 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-02-24 03:00:16,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-02-24 03:00:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.0055555555555555) internal successors, (181), 180 states have internal predecessors, (181), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2022-02-24 03:00:16,344 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2022-02-24 03:00:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:16,345 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2022-02-24 03:00:16,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2022-02-24 03:00:16,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-02-24 03:00:16,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:16,345 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:16,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-24 03:00:16,346 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:16,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash -971121626, now seen corresponding path program 86 times [2022-02-24 03:00:16,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:16,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082563427] [2022-02-24 03:00:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:16,353 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:16,353 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:18,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:18,840 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:18,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082563427] [2022-02-24 03:00:18,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2082563427] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:18,840 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:18,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-24 03:00:18,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404631920] [2022-02-24 03:00:18,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:18,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-24 03:00:18,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-24 03:00:18,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 03:00:18,843 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:21,862 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2022-02-24 03:00:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-24 03:00:21,863 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 184 [2022-02-24 03:00:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:21,863 INFO L225 Difference]: With dead ends: 194 [2022-02-24 03:00:21,863 INFO L226 Difference]: Without dead ends: 188 [2022-02-24 03:00:21,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2022-02-24 03:00:21,865 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 182 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:21,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 44 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-02-24 03:00:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2022-02-24 03:00:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.0054945054945055) internal successors, (183), 182 states have internal predecessors, (183), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2022-02-24 03:00:21,927 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2022-02-24 03:00:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:21,927 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2022-02-24 03:00:21,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2022-02-24 03:00:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-02-24 03:00:21,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:21,928 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:21,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-24 03:00:21,928 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2114066744, now seen corresponding path program 87 times [2022-02-24 03:00:21,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:21,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798907606] [2022-02-24 03:00:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:21,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:21,934 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:21,934 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:24,429 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:24,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798907606] [2022-02-24 03:00:24,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [798907606] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:24,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:24,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-24 03:00:24,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647842425] [2022-02-24 03:00:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:24,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-24 03:00:24,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-24 03:00:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 03:00:24,431 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:27,497 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2022-02-24 03:00:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-24 03:00:27,498 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 186 [2022-02-24 03:00:27,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:27,498 INFO L225 Difference]: With dead ends: 196 [2022-02-24 03:00:27,498 INFO L226 Difference]: Without dead ends: 190 [2022-02-24 03:00:27,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2022-02-24 03:00:27,499 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 184 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:27,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 29 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-02-24 03:00:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2022-02-24 03:00:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.0054347826086956) internal successors, (185), 184 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2022-02-24 03:00:27,548 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2022-02-24 03:00:27,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:27,549 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2022-02-24 03:00:27,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:27,549 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2022-02-24 03:00:27,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-02-24 03:00:27,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:27,550 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:27,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-24 03:00:27,550 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:27,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:27,550 INFO L85 PathProgramCache]: Analyzing trace with hash -972697366, now seen corresponding path program 88 times [2022-02-24 03:00:27,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:27,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113418208] [2022-02-24 03:00:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:27,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:27,556 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:27,556 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:30,109 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:30,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113418208] [2022-02-24 03:00:30,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1113418208] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:30,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:30,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-24 03:00:30,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396469766] [2022-02-24 03:00:30,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:30,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-24 03:00:30,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:30,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-24 03:00:30,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 03:00:30,111 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:33,241 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2022-02-24 03:00:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-24 03:00:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188 [2022-02-24 03:00:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:33,243 INFO L225 Difference]: With dead ends: 198 [2022-02-24 03:00:33,243 INFO L226 Difference]: Without dead ends: 192 [2022-02-24 03:00:33,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2022-02-24 03:00:33,245 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 186 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:33,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 54 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-02-24 03:00:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2022-02-24 03:00:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.0053763440860215) internal successors, (187), 186 states have internal predecessors, (187), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2022-02-24 03:00:33,307 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2022-02-24 03:00:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:33,307 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2022-02-24 03:00:33,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2022-02-24 03:00:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-02-24 03:00:33,308 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:33,308 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:33,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-24 03:00:33,308 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:33,309 INFO L85 PathProgramCache]: Analyzing trace with hash 666614412, now seen corresponding path program 89 times [2022-02-24 03:00:33,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:33,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031641827] [2022-02-24 03:00:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:33,315 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:33,315 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:35,949 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:35,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031641827] [2022-02-24 03:00:35,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031641827] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:35,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:35,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-24 03:00:35,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029204202] [2022-02-24 03:00:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:35,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-24 03:00:35,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-24 03:00:35,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 03:00:35,951 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:39,147 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2022-02-24 03:00:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-24 03:00:39,147 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 190 [2022-02-24 03:00:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:39,148 INFO L225 Difference]: With dead ends: 200 [2022-02-24 03:00:39,148 INFO L226 Difference]: Without dead ends: 194 [2022-02-24 03:00:39,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2022-02-24 03:00:39,150 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 188 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:39,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 39 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-02-24 03:00:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2022-02-24 03:00:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.0053191489361701) internal successors, (189), 188 states have internal predecessors, (189), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2022-02-24 03:00:39,238 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2022-02-24 03:00:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:39,238 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2022-02-24 03:00:39,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2022-02-24 03:00:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-02-24 03:00:39,239 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:39,239 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:39,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-24 03:00:39,239 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash -207764562, now seen corresponding path program 90 times [2022-02-24 03:00:39,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:39,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557470521] [2022-02-24 03:00:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:39,247 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:39,248 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:41,929 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:41,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557470521] [2022-02-24 03:00:41,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [557470521] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:41,929 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:41,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-24 03:00:41,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80647063] [2022-02-24 03:00:41,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:41,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-24 03:00:41,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:41,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-24 03:00:41,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 03:00:41,931 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:45,207 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2022-02-24 03:00:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-24 03:00:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 192 [2022-02-24 03:00:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:45,208 INFO L225 Difference]: With dead ends: 202 [2022-02-24 03:00:45,209 INFO L226 Difference]: Without dead ends: 196 [2022-02-24 03:00:45,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2022-02-24 03:00:45,211 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 190 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:45,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 34 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-02-24 03:00:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2022-02-24 03:00:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2022-02-24 03:00:45,273 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2022-02-24 03:00:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:45,273 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2022-02-24 03:00:45,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2022-02-24 03:00:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-02-24 03:00:45,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:45,274 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:45,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-24 03:00:45,274 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1327631440, now seen corresponding path program 91 times [2022-02-24 03:00:45,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:45,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836102054] [2022-02-24 03:00:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:45,281 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:45,281 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:48,018 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:48,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836102054] [2022-02-24 03:00:48,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [836102054] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:48,018 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:48,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-24 03:00:48,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128432388] [2022-02-24 03:00:48,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:48,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-24 03:00:48,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:48,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-24 03:00:48,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 03:00:48,020 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:51,362 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2022-02-24 03:00:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-24 03:00:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 194 [2022-02-24 03:00:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:51,364 INFO L225 Difference]: With dead ends: 204 [2022-02-24 03:00:51,364 INFO L226 Difference]: Without dead ends: 198 [2022-02-24 03:00:51,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2022-02-24 03:00:51,366 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 192 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:51,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 44 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-02-24 03:00:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2022-02-24 03:00:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 192 states have (on average 1.0052083333333333) internal successors, (193), 192 states have internal predecessors, (193), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2022-02-24 03:00:51,432 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2022-02-24 03:00:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:51,432 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2022-02-24 03:00:51,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2022-02-24 03:00:51,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-02-24 03:00:51,432 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:51,433 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:51,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-24 03:00:51,433 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:51,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:51,433 INFO L85 PathProgramCache]: Analyzing trace with hash -625560462, now seen corresponding path program 92 times [2022-02-24 03:00:51,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:51,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974126440] [2022-02-24 03:00:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:51,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:51,440 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:51,440 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:00:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:00:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:00:54,267 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:00:54,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974126440] [2022-02-24 03:00:54,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [974126440] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:00:54,269 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:00:54,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-24 03:00:54,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614552565] [2022-02-24 03:00:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:00:54,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-24 03:00:54,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:00:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-24 03:00:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 03:00:54,271 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:00:57,701 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2022-02-24 03:00:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-24 03:00:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 196 [2022-02-24 03:00:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:00:57,702 INFO L225 Difference]: With dead ends: 206 [2022-02-24 03:00:57,702 INFO L226 Difference]: Without dead ends: 200 [2022-02-24 03:00:57,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2022-02-24 03:00:57,705 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 194 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:00:57,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 49 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:00:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-02-24 03:00:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2022-02-24 03:00:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 194 states have (on average 1.0051546391752577) internal successors, (195), 194 states have internal predecessors, (195), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2022-02-24 03:00:57,768 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2022-02-24 03:00:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:00:57,768 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2022-02-24 03:00:57,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:00:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2022-02-24 03:00:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-02-24 03:00:57,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:00:57,769 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:00:57,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-24 03:00:57,769 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:00:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:00:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -742269932, now seen corresponding path program 93 times [2022-02-24 03:00:57,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:00:57,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738137784] [2022-02-24 03:00:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:00:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:00:57,776 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:00:57,776 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:00:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:00,662 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:00,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738137784] [2022-02-24 03:01:00,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [738137784] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:00,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:00,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-24 03:01:00,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760047658] [2022-02-24 03:01:00,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:00,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-24 03:01:00,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-24 03:01:00,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 03:01:00,665 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:04,162 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2022-02-24 03:01:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-24 03:01:04,162 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 198 [2022-02-24 03:01:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:04,163 INFO L225 Difference]: With dead ends: 208 [2022-02-24 03:01:04,163 INFO L226 Difference]: Without dead ends: 202 [2022-02-24 03:01:04,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-02-24 03:01:04,165 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 196 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:04,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 29 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:01:04,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-02-24 03:01:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2022-02-24 03:01:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.0051020408163265) internal successors, (197), 196 states have internal predecessors, (197), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2022-02-24 03:01:04,230 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2022-02-24 03:01:04,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:04,230 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2022-02-24 03:01:04,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2022-02-24 03:01:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-02-24 03:01:04,231 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:04,231 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:04,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-24 03:01:04,232 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1230920906, now seen corresponding path program 94 times [2022-02-24 03:01:04,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:04,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469632930] [2022-02-24 03:01:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:04,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:04,240 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:04,240 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:07,172 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:07,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469632930] [2022-02-24 03:01:07,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [469632930] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:07,172 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:07,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-24 03:01:07,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48256620] [2022-02-24 03:01:07,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:07,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-24 03:01:07,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-24 03:01:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 03:01:07,175 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:10,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:10,743 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2022-02-24 03:01:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-24 03:01:10,743 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 200 [2022-02-24 03:01:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:10,744 INFO L225 Difference]: With dead ends: 210 [2022-02-24 03:01:10,744 INFO L226 Difference]: Without dead ends: 204 [2022-02-24 03:01:10,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2022-02-24 03:01:10,745 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 198 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:10,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 39 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:01:10,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-02-24 03:01:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2022-02-24 03:01:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.005050505050505) internal successors, (199), 198 states have internal predecessors, (199), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2022-02-24 03:01:10,817 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2022-02-24 03:01:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:10,817 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2022-02-24 03:01:10,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2022-02-24 03:01:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-02-24 03:01:10,818 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:10,818 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:10,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-24 03:01:10,819 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1621895640, now seen corresponding path program 95 times [2022-02-24 03:01:10,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:10,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173489121] [2022-02-24 03:01:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:10,826 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:10,826 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:13,827 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:13,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173489121] [2022-02-24 03:01:13,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1173489121] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:13,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:13,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-24 03:01:13,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903015207] [2022-02-24 03:01:13,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:13,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-24 03:01:13,827 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:13,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-24 03:01:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 03:01:13,829 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:17,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:17,451 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2022-02-24 03:01:17,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-24 03:01:17,452 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 202 [2022-02-24 03:01:17,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:17,452 INFO L225 Difference]: With dead ends: 212 [2022-02-24 03:01:17,452 INFO L226 Difference]: Without dead ends: 206 [2022-02-24 03:01:17,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-02-24 03:01:17,454 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 200 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:17,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 29 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:01:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-02-24 03:01:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2022-02-24 03:01:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.005) internal successors, (201), 200 states have internal predecessors, (201), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2022-02-24 03:01:17,513 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2022-02-24 03:01:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:17,513 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2022-02-24 03:01:17,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2022-02-24 03:01:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-02-24 03:01:17,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:17,514 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:17,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-24 03:01:17,514 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1305505798, now seen corresponding path program 96 times [2022-02-24 03:01:17,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:17,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933215825] [2022-02-24 03:01:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:17,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:17,522 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:17,522 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:20,568 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:20,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933215825] [2022-02-24 03:01:20,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1933215825] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:20,569 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:20,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-24 03:01:20,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93806613] [2022-02-24 03:01:20,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:20,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-24 03:01:20,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-24 03:01:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 03:01:20,572 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:24,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:24,292 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2022-02-24 03:01:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-24 03:01:24,293 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 204 [2022-02-24 03:01:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:24,294 INFO L225 Difference]: With dead ends: 214 [2022-02-24 03:01:24,294 INFO L226 Difference]: Without dead ends: 208 [2022-02-24 03:01:24,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2022-02-24 03:01:24,296 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 202 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:24,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 29 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:01:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-02-24 03:01:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-02-24 03:01:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.004950495049505) internal successors, (203), 202 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2022-02-24 03:01:24,366 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2022-02-24 03:01:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:24,366 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2022-02-24 03:01:24,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2022-02-24 03:01:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-02-24 03:01:24,367 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:24,367 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:24,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-24 03:01:24,367 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1334708836, now seen corresponding path program 97 times [2022-02-24 03:01:24,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:24,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10259153] [2022-02-24 03:01:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:24,374 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:24,374 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:27,481 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:27,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10259153] [2022-02-24 03:01:27,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [10259153] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:27,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:27,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-24 03:01:27,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368411670] [2022-02-24 03:01:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:27,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-24 03:01:27,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:27,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-24 03:01:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 03:01:27,484 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:31,263 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2022-02-24 03:01:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-24 03:01:31,264 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 206 [2022-02-24 03:01:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:31,264 INFO L225 Difference]: With dead ends: 216 [2022-02-24 03:01:31,264 INFO L226 Difference]: Without dead ends: 210 [2022-02-24 03:01:31,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2022-02-24 03:01:31,266 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 204 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:31,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 29 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:01:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-02-24 03:01:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-02-24 03:01:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.0049019607843137) internal successors, (205), 204 states have internal predecessors, (205), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2022-02-24 03:01:31,326 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2022-02-24 03:01:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:31,326 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2022-02-24 03:01:31,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:31,327 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2022-02-24 03:01:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-02-24 03:01:31,327 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:31,327 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:31,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-24 03:01:31,327 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash 665942718, now seen corresponding path program 98 times [2022-02-24 03:01:31,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:31,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574831211] [2022-02-24 03:01:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:31,338 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:31,338 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:34,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:34,559 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:34,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574831211] [2022-02-24 03:01:34,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1574831211] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:34,559 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:34,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-24 03:01:34,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013297097] [2022-02-24 03:01:34,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:34,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-24 03:01:34,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-24 03:01:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 03:01:34,562 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:38,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:38,438 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2022-02-24 03:01:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-24 03:01:38,438 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 208 [2022-02-24 03:01:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:38,439 INFO L225 Difference]: With dead ends: 218 [2022-02-24 03:01:38,439 INFO L226 Difference]: Without dead ends: 212 [2022-02-24 03:01:38,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2022-02-24 03:01:38,442 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 206 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:38,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 54 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:01:38,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-02-24 03:01:38,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2022-02-24 03:01:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 206 states have (on average 1.0048543689320388) internal successors, (207), 206 states have internal predecessors, (207), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2022-02-24 03:01:38,516 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2022-02-24 03:01:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:38,516 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2022-02-24 03:01:38,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2022-02-24 03:01:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-02-24 03:01:38,517 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:38,517 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:38,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-24 03:01:38,517 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash -853262496, now seen corresponding path program 99 times [2022-02-24 03:01:38,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:38,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430288896] [2022-02-24 03:01:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:38,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:38,525 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:38,525 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:41,761 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:41,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430288896] [2022-02-24 03:01:41,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [430288896] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:41,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:41,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-24 03:01:41,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868577416] [2022-02-24 03:01:41,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:41,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-24 03:01:41,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-24 03:01:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 03:01:41,763 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:45,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:45,727 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2022-02-24 03:01:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-24 03:01:45,731 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 210 [2022-02-24 03:01:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:45,732 INFO L225 Difference]: With dead ends: 220 [2022-02-24 03:01:45,732 INFO L226 Difference]: Without dead ends: 214 [2022-02-24 03:01:45,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-02-24 03:01:45,735 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 208 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:45,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 79 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:01:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-02-24 03:01:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2022-02-24 03:01:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 208 states have (on average 1.0048076923076923) internal successors, (209), 208 states have internal predecessors, (209), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2022-02-24 03:01:45,829 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2022-02-24 03:01:45,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:45,830 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2022-02-24 03:01:45,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2022-02-24 03:01:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-02-24 03:01:45,831 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:45,832 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:45,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-24 03:01:45,832 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash -520592510, now seen corresponding path program 100 times [2022-02-24 03:01:45,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:45,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000522098] [2022-02-24 03:01:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:45,847 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:45,847 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:49,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:49,350 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:49,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000522098] [2022-02-24 03:01:49,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1000522098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:49,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:49,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-24 03:01:49,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217452698] [2022-02-24 03:01:49,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:49,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-24 03:01:49,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-24 03:01:49,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 03:01:49,354 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:53,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:01:53,358 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2022-02-24 03:01:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-24 03:01:53,358 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 212 [2022-02-24 03:01:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:01:53,358 INFO L225 Difference]: With dead ends: 222 [2022-02-24 03:01:53,358 INFO L226 Difference]: Without dead ends: 216 [2022-02-24 03:01:53,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2022-02-24 03:01:53,361 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 210 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:01:53,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 54 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:01:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-02-24 03:01:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2022-02-24 03:01:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.0047619047619047) internal successors, (211), 210 states have internal predecessors, (211), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2022-02-24 03:01:53,434 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2022-02-24 03:01:53,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:01:53,435 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2022-02-24 03:01:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:01:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2022-02-24 03:01:53,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-02-24 03:01:53,435 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:01:53,435 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:01:53,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-24 03:01:53,436 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:01:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:01:53,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1347684132, now seen corresponding path program 101 times [2022-02-24 03:01:53,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:01:53,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476993201] [2022-02-24 03:01:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:01:53,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:01:53,442 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:01:53,443 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:01:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:01:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:01:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:01:56,771 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:01:56,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476993201] [2022-02-24 03:01:56,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1476993201] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:01:56,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:01:56,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-02-24 03:01:56,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771976259] [2022-02-24 03:01:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:01:56,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-24 03:01:56,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:01:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-24 03:01:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 03:01:56,774 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:00,867 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2022-02-24 03:02:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-24 03:02:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 214 [2022-02-24 03:02:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:00,868 INFO L225 Difference]: With dead ends: 224 [2022-02-24 03:02:00,868 INFO L226 Difference]: Without dead ends: 218 [2022-02-24 03:02:00,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2022-02-24 03:02:00,870 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 212 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:00,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 29 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:02:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-02-24 03:02:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2022-02-24 03:02:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.0047169811320755) internal successors, (213), 212 states have internal predecessors, (213), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2022-02-24 03:02:00,935 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2022-02-24 03:02:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:00,935 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2022-02-24 03:02:00,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2022-02-24 03:02:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-02-24 03:02:00,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:00,937 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:00,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-24 03:02:00,937 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:00,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1465207366, now seen corresponding path program 102 times [2022-02-24 03:02:00,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:00,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606590192] [2022-02-24 03:02:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:00,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:00,944 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:00,944 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:04,372 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:04,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606590192] [2022-02-24 03:02:04,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [606590192] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:04,372 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:04,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-02-24 03:02:04,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492177718] [2022-02-24 03:02:04,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:04,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-24 03:02:04,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-24 03:02:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 03:02:04,374 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand has 106 states, 106 states have (on average 2.0) internal successors, (212), 105 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:08,536 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2022-02-24 03:02:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-24 03:02:08,536 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0) internal successors, (212), 105 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 216 [2022-02-24 03:02:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:08,537 INFO L225 Difference]: With dead ends: 226 [2022-02-24 03:02:08,537 INFO L226 Difference]: Without dead ends: 220 [2022-02-24 03:02:08,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2022-02-24 03:02:08,539 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 214 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:08,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 24 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:02:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-02-24 03:02:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2022-02-24 03:02:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.0046728971962617) internal successors, (215), 214 states have internal predecessors, (215), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2022-02-24 03:02:08,635 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2022-02-24 03:02:08,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:08,635 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2022-02-24 03:02:08,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.0) internal successors, (212), 105 states have internal predecessors, (212), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2022-02-24 03:02:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-02-24 03:02:08,636 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:08,636 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:08,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-24 03:02:08,636 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1559081752, now seen corresponding path program 103 times [2022-02-24 03:02:08,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:08,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061470568] [2022-02-24 03:02:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:08,643 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:08,643 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:12,156 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:12,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061470568] [2022-02-24 03:02:12,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2061470568] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:12,157 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:12,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-02-24 03:02:12,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502583211] [2022-02-24 03:02:12,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:12,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-24 03:02:12,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-24 03:02:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 03:02:12,158 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand has 107 states, 107 states have (on average 2.0) internal successors, (214), 106 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:16,389 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2022-02-24 03:02:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-24 03:02:16,390 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0) internal successors, (214), 106 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 218 [2022-02-24 03:02:16,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:16,390 INFO L225 Difference]: With dead ends: 228 [2022-02-24 03:02:16,390 INFO L226 Difference]: Without dead ends: 222 [2022-02-24 03:02:16,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2022-02-24 03:02:16,392 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 216 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:16,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 49 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:02:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-02-24 03:02:16,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2022-02-24 03:02:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.0046296296296295) internal successors, (217), 216 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2022-02-24 03:02:16,460 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2022-02-24 03:02:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:16,461 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2022-02-24 03:02:16,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.0) internal successors, (214), 106 states have internal predecessors, (214), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2022-02-24 03:02:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-02-24 03:02:16,461 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:16,462 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:16,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-02-24 03:02:16,462 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash -208064758, now seen corresponding path program 104 times [2022-02-24 03:02:16,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:16,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256671432] [2022-02-24 03:02:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:16,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:16,469 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:16,469 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:20,064 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:20,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256671432] [2022-02-24 03:02:20,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1256671432] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:20,064 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:20,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-02-24 03:02:20,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173336639] [2022-02-24 03:02:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:20,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-02-24 03:02:20,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-02-24 03:02:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-02-24 03:02:20,067 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand has 108 states, 108 states have (on average 2.0) internal successors, (216), 107 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:24,405 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2022-02-24 03:02:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-24 03:02:24,407 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.0) internal successors, (216), 107 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 220 [2022-02-24 03:02:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:24,408 INFO L225 Difference]: With dead ends: 230 [2022-02-24 03:02:24,408 INFO L226 Difference]: Without dead ends: 224 [2022-02-24 03:02:24,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2022-02-24 03:02:24,410 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 218 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:24,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 34 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:02:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-02-24 03:02:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2022-02-24 03:02:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 218 states have (on average 1.0045871559633028) internal successors, (219), 218 states have internal predecessors, (219), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2022-02-24 03:02:24,481 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2022-02-24 03:02:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:24,481 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2022-02-24 03:02:24,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.0) internal successors, (216), 107 states have internal predecessors, (216), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2022-02-24 03:02:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-02-24 03:02:24,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:24,482 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:24,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-02-24 03:02:24,482 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1039143084, now seen corresponding path program 105 times [2022-02-24 03:02:24,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:24,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247904793] [2022-02-24 03:02:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:24,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:24,492 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:24,492 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:28,141 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:28,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247904793] [2022-02-24 03:02:28,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1247904793] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:28,141 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:28,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-02-24 03:02:28,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048639251] [2022-02-24 03:02:28,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:28,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-02-24 03:02:28,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:28,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-02-24 03:02:28,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-02-24 03:02:28,147 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand has 109 states, 109 states have (on average 2.0) internal successors, (218), 108 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:32,735 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2022-02-24 03:02:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-24 03:02:32,735 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0) internal successors, (218), 108 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 222 [2022-02-24 03:02:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:32,736 INFO L225 Difference]: With dead ends: 232 [2022-02-24 03:02:32,736 INFO L226 Difference]: Without dead ends: 226 [2022-02-24 03:02:32,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2022-02-24 03:02:32,738 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 220 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:32,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 44 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:02:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-02-24 03:02:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2022-02-24 03:02:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 220 states have (on average 1.0045454545454546) internal successors, (221), 220 states have internal predecessors, (221), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2022-02-24 03:02:32,813 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2022-02-24 03:02:32,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:32,813 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2022-02-24 03:02:32,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.0) internal successors, (218), 108 states have internal predecessors, (218), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:32,813 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2022-02-24 03:02:32,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-02-24 03:02:32,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:32,814 INFO L514 BasicCegarLoop]: trace histogram [106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:32,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-02-24 03:02:32,814 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:32,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1310003662, now seen corresponding path program 106 times [2022-02-24 03:02:32,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:32,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987560685] [2022-02-24 03:02:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:32,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:32,822 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:32,822 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:36,468 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:36,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987560685] [2022-02-24 03:02:36,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1987560685] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:36,468 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:36,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-02-24 03:02:36,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722584102] [2022-02-24 03:02:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:36,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-02-24 03:02:36,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-02-24 03:02:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-02-24 03:02:36,471 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand has 110 states, 110 states have (on average 2.0) internal successors, (220), 109 states have internal predecessors, (220), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:40,969 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2022-02-24 03:02:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-24 03:02:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.0) internal successors, (220), 109 states have internal predecessors, (220), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 224 [2022-02-24 03:02:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:40,970 INFO L225 Difference]: With dead ends: 234 [2022-02-24 03:02:40,970 INFO L226 Difference]: Without dead ends: 228 [2022-02-24 03:02:40,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872 [2022-02-24 03:02:40,972 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 222 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:40,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 29 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:02:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-02-24 03:02:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2022-02-24 03:02:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0045045045045045) internal successors, (223), 222 states have internal predecessors, (223), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:41,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2022-02-24 03:02:41,043 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2022-02-24 03:02:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:41,043 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2022-02-24 03:02:41,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.0) internal successors, (220), 109 states have internal predecessors, (220), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2022-02-24 03:02:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-02-24 03:02:41,044 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:41,044 INFO L514 BasicCegarLoop]: trace histogram [107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:41,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-02-24 03:02:41,044 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:41,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash -385985936, now seen corresponding path program 107 times [2022-02-24 03:02:41,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:41,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245267030] [2022-02-24 03:02:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:41,051 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:41,052 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:44,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:44,783 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:44,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245267030] [2022-02-24 03:02:44,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245267030] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:44,783 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:44,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-02-24 03:02:44,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379267768] [2022-02-24 03:02:44,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:44,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-02-24 03:02:44,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-02-24 03:02:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-02-24 03:02:44,785 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:49,325 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2022-02-24 03:02:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-24 03:02:49,325 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 226 [2022-02-24 03:02:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:49,326 INFO L225 Difference]: With dead ends: 236 [2022-02-24 03:02:49,326 INFO L226 Difference]: Without dead ends: 230 [2022-02-24 03:02:49,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2022-02-24 03:02:49,328 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 224 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:49,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 29 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:02:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-02-24 03:02:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2022-02-24 03:02:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 224 states have (on average 1.0044642857142858) internal successors, (225), 224 states have internal predecessors, (225), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2022-02-24 03:02:49,420 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2022-02-24 03:02:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:49,421 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2022-02-24 03:02:49,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2022-02-24 03:02:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-02-24 03:02:49,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:49,422 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:49,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-02-24 03:02:49,422 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1855582866, now seen corresponding path program 108 times [2022-02-24 03:02:49,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:49,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294232394] [2022-02-24 03:02:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:49,433 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:49,433 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:02:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:02:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:02:53,244 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:02:53,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294232394] [2022-02-24 03:02:53,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1294232394] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:02:53,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:02:53,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-02-24 03:02:53,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840293450] [2022-02-24 03:02:53,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:02:53,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-02-24 03:02:53,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:02:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-02-24 03:02:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-02-24 03:02:53,246 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand has 112 states, 112 states have (on average 2.0) internal successors, (224), 111 states have internal predecessors, (224), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:02:57,837 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2022-02-24 03:02:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-24 03:02:57,838 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0) internal successors, (224), 111 states have internal predecessors, (224), 2 states have call successors, (3), 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 228 [2022-02-24 03:02:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:02:57,838 INFO L225 Difference]: With dead ends: 238 [2022-02-24 03:02:57,838 INFO L226 Difference]: Without dead ends: 232 [2022-02-24 03:02:57,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620 [2022-02-24 03:02:57,841 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 226 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:02:57,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 24 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:02:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-02-24 03:02:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2022-02-24 03:02:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 226 states have (on average 1.0044247787610618) internal successors, (227), 226 states have internal predecessors, (227), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2022-02-24 03:02:57,926 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2022-02-24 03:02:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:02:57,926 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2022-02-24 03:02:57,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.0) internal successors, (224), 111 states have internal predecessors, (224), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:02:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2022-02-24 03:02:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-02-24 03:02:57,927 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:02:57,927 INFO L514 BasicCegarLoop]: trace histogram [109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:02:57,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-02-24 03:02:57,927 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:02:57,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:02:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash -70381004, now seen corresponding path program 109 times [2022-02-24 03:02:57,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:02:57,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608132178] [2022-02-24 03:02:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:02:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:02:57,935 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:02:57,935 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:02:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:01,887 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:01,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608132178] [2022-02-24 03:03:01,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1608132178] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:01,887 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:01,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-02-24 03:03:01,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521726769] [2022-02-24 03:03:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:01,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-02-24 03:03:01,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:01,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-02-24 03:03:01,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-02-24 03:03:01,889 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand has 113 states, 113 states have (on average 2.0) internal successors, (226), 112 states have internal predecessors, (226), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:06,570 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2022-02-24 03:03:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-24 03:03:06,570 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0) internal successors, (226), 112 states have internal predecessors, (226), 2 states have call successors, (3), 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 230 [2022-02-24 03:03:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:06,571 INFO L225 Difference]: With dead ends: 240 [2022-02-24 03:03:06,571 INFO L226 Difference]: Without dead ends: 234 [2022-02-24 03:03:06,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2022-02-24 03:03:06,574 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 228 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:06,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 39 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:03:06,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-24 03:03:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-02-24 03:03:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.0043859649122806) internal successors, (229), 228 states have internal predecessors, (229), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:06,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2022-02-24 03:03:06,660 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2022-02-24 03:03:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:06,660 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2022-02-24 03:03:06,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.0) internal successors, (226), 112 states have internal predecessors, (226), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2022-02-24 03:03:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-02-24 03:03:06,661 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:06,661 INFO L514 BasicCegarLoop]: trace histogram [110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:06,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-02-24 03:03:06,661 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 209244502, now seen corresponding path program 110 times [2022-02-24 03:03:06,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:06,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927844978] [2022-02-24 03:03:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:06,672 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:06,672 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:10,608 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:10,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927844978] [2022-02-24 03:03:10,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [927844978] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:10,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:10,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-02-24 03:03:10,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990201527] [2022-02-24 03:03:10,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:10,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-02-24 03:03:10,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-02-24 03:03:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-02-24 03:03:10,611 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand has 114 states, 114 states have (on average 2.0) internal successors, (228), 113 states have internal predecessors, (228), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:15,399 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2022-02-24 03:03:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-24 03:03:15,400 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.0) internal successors, (228), 113 states have internal predecessors, (228), 2 states have call successors, (3), 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 232 [2022-02-24 03:03:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:15,400 INFO L225 Difference]: With dead ends: 242 [2022-02-24 03:03:15,400 INFO L226 Difference]: Without dead ends: 236 [2022-02-24 03:03:15,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2022-02-24 03:03:15,402 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 230 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:15,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 44 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:03:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-02-24 03:03:15,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2022-02-24 03:03:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 230 states have (on average 1.0043478260869565) internal successors, (231), 230 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2022-02-24 03:03:15,479 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2022-02-24 03:03:15,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:15,479 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2022-02-24 03:03:15,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.0) internal successors, (228), 113 states have internal predecessors, (228), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:15,479 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2022-02-24 03:03:15,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-02-24 03:03:15,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:15,480 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:15,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-02-24 03:03:15,481 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1653583880, now seen corresponding path program 111 times [2022-02-24 03:03:15,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:15,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086939888] [2022-02-24 03:03:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:15,492 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:15,492 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:19,621 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:19,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086939888] [2022-02-24 03:03:19,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1086939888] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:19,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:19,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-02-24 03:03:19,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699551951] [2022-02-24 03:03:19,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:19,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-02-24 03:03:19,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:19,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-02-24 03:03:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-02-24 03:03:19,623 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand has 115 states, 115 states have (on average 2.0) internal successors, (230), 114 states have internal predecessors, (230), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:24,501 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2022-02-24 03:03:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-24 03:03:24,502 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0) internal successors, (230), 114 states have internal predecessors, (230), 2 states have call successors, (3), 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 234 [2022-02-24 03:03:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:24,502 INFO L225 Difference]: With dead ends: 244 [2022-02-24 03:03:24,502 INFO L226 Difference]: Without dead ends: 238 [2022-02-24 03:03:24,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2022-02-24 03:03:24,505 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 232 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:24,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 34 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:03:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-02-24 03:03:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2022-02-24 03:03:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 232 states have (on average 1.0043103448275863) internal successors, (233), 232 states have internal predecessors, (233), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2022-02-24 03:03:24,595 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2022-02-24 03:03:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:24,595 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2022-02-24 03:03:24,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.0) internal successors, (230), 114 states have internal predecessors, (230), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2022-02-24 03:03:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-02-24 03:03:24,596 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:24,596 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:24,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-02-24 03:03:24,596 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:24,596 INFO L85 PathProgramCache]: Analyzing trace with hash -830296550, now seen corresponding path program 112 times [2022-02-24 03:03:24,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:24,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759474878] [2022-02-24 03:03:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:24,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:24,605 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:24,605 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:28,675 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:28,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759474878] [2022-02-24 03:03:28,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759474878] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:28,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:28,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-02-24 03:03:28,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922973387] [2022-02-24 03:03:28,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:28,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-02-24 03:03:28,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-02-24 03:03:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-02-24 03:03:28,678 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand has 116 states, 116 states have (on average 2.0) internal successors, (232), 115 states have internal predecessors, (232), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:33,615 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2022-02-24 03:03:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-24 03:03:33,615 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0) internal successors, (232), 115 states have internal predecessors, (232), 2 states have call successors, (3), 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 236 [2022-02-24 03:03:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:33,616 INFO L225 Difference]: With dead ends: 246 [2022-02-24 03:03:33,616 INFO L226 Difference]: Without dead ends: 240 [2022-02-24 03:03:33,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2022-02-24 03:03:33,618 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 234 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:33,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 59 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:03:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-02-24 03:03:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2022-02-24 03:03:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.0042735042735043) internal successors, (235), 234 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2022-02-24 03:03:33,696 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2022-02-24 03:03:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:33,696 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2022-02-24 03:03:33,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.0) internal successors, (232), 115 states have internal predecessors, (232), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2022-02-24 03:03:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-02-24 03:03:33,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:33,697 INFO L514 BasicCegarLoop]: trace histogram [113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:33,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-02-24 03:03:33,697 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:33,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:33,697 INFO L85 PathProgramCache]: Analyzing trace with hash 74845116, now seen corresponding path program 113 times [2022-02-24 03:03:33,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:33,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657773715] [2022-02-24 03:03:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:33,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:33,707 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:33,708 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:37,886 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:37,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657773715] [2022-02-24 03:03:37,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1657773715] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:37,886 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:37,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-02-24 03:03:37,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754828405] [2022-02-24 03:03:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:37,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-02-24 03:03:37,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:37,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-02-24 03:03:37,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-02-24 03:03:37,888 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:42,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:42,892 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2022-02-24 03:03:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-24 03:03:42,892 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (3), 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 238 [2022-02-24 03:03:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:42,892 INFO L225 Difference]: With dead ends: 248 [2022-02-24 03:03:42,893 INFO L226 Difference]: Without dead ends: 242 [2022-02-24 03:03:42,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2022-02-24 03:03:42,895 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 236 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:42,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 44 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:03:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-02-24 03:03:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2022-02-24 03:03:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 236 states have (on average 1.0042372881355932) internal successors, (237), 236 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2022-02-24 03:03:42,989 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2022-02-24 03:03:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:42,989 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2022-02-24 03:03:42,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2022-02-24 03:03:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-02-24 03:03:42,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:42,990 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:42,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-02-24 03:03:42,990 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:42,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1962374946, now seen corresponding path program 114 times [2022-02-24 03:03:42,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:42,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403247798] [2022-02-24 03:03:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:42,998 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:42,999 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:47,215 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:47,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403247798] [2022-02-24 03:03:47,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1403247798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:47,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:47,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-02-24 03:03:47,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763327603] [2022-02-24 03:03:47,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:47,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-02-24 03:03:47,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-02-24 03:03:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-02-24 03:03:47,232 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand has 118 states, 118 states have (on average 2.0) internal successors, (236), 117 states have internal predecessors, (236), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:52,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:03:52,324 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2022-02-24 03:03:52,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-24 03:03:52,325 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.0) internal successors, (236), 117 states have internal predecessors, (236), 2 states have call successors, (3), 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 240 [2022-02-24 03:03:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:03:52,325 INFO L225 Difference]: With dead ends: 250 [2022-02-24 03:03:52,325 INFO L226 Difference]: Without dead ends: 244 [2022-02-24 03:03:52,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2022-02-24 03:03:52,328 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 238 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:03:52,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 44 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:03:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-02-24 03:03:52,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2022-02-24 03:03:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 238 states have (on average 1.004201680672269) internal successors, (239), 238 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2022-02-24 03:03:52,424 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2022-02-24 03:03:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:03:52,424 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2022-02-24 03:03:52,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.0) internal successors, (236), 117 states have internal predecessors, (236), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:03:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2022-02-24 03:03:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-02-24 03:03:52,424 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:03:52,425 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:03:52,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-02-24 03:03:52,425 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:03:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:03:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1225767552, now seen corresponding path program 115 times [2022-02-24 03:03:52,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:03:52,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784526316] [2022-02-24 03:03:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:03:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:03:52,434 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:03:52,434 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:03:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:03:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:03:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:03:56,735 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:03:56,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784526316] [2022-02-24 03:03:56,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1784526316] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:03:56,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:03:56,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-02-24 03:03:56,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008672824] [2022-02-24 03:03:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:03:56,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-02-24 03:03:56,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:03:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-02-24 03:03:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-02-24 03:03:56,738 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand has 119 states, 119 states have (on average 2.0) internal successors, (238), 118 states have internal predecessors, (238), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:01,940 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2022-02-24 03:04:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-24 03:04:01,941 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.0) internal successors, (238), 118 states have internal predecessors, (238), 2 states have call successors, (3), 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 242 [2022-02-24 03:04:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:01,941 INFO L225 Difference]: With dead ends: 252 [2022-02-24 03:04:01,941 INFO L226 Difference]: Without dead ends: 246 [2022-02-24 03:04:01,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2022-02-24 03:04:01,944 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 240 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:01,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 49 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:04:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-02-24 03:04:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2022-02-24 03:04:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.0041666666666667) internal successors, (241), 240 states have internal predecessors, (241), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2022-02-24 03:04:02,027 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2022-02-24 03:04:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:02,027 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2022-02-24 03:04:02,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.0) internal successors, (238), 118 states have internal predecessors, (238), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2022-02-24 03:04:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-02-24 03:04:02,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:02,028 INFO L514 BasicCegarLoop]: trace histogram [116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:02,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-02-24 03:04:02,028 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2015665758, now seen corresponding path program 116 times [2022-02-24 03:04:02,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:02,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32047165] [2022-02-24 03:04:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:02,037 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:02,037 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:06,412 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:06,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32047165] [2022-02-24 03:04:06,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [32047165] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:06,412 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:06,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-02-24 03:04:06,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189125115] [2022-02-24 03:04:06,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:06,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-02-24 03:04:06,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-02-24 03:04:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-02-24 03:04:06,415 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand has 120 states, 120 states have (on average 2.0) internal successors, (240), 119 states have internal predecessors, (240), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:11,728 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2022-02-24 03:04:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-24 03:04:11,729 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.0) internal successors, (240), 119 states have internal predecessors, (240), 2 states have call successors, (3), 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 244 [2022-02-24 03:04:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:11,729 INFO L225 Difference]: With dead ends: 254 [2022-02-24 03:04:11,729 INFO L226 Difference]: Without dead ends: 248 [2022-02-24 03:04:11,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2022-02-24 03:04:11,731 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:11,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 44 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:04:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-02-24 03:04:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2022-02-24 03:04:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.0041322314049588) internal successors, (243), 242 states have internal predecessors, (243), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2022-02-24 03:04:11,815 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2022-02-24 03:04:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:11,815 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2022-02-24 03:04:11,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.0) internal successors, (240), 119 states have internal predecessors, (240), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2022-02-24 03:04:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-02-24 03:04:11,816 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:11,816 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:11,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-02-24 03:04:11,816 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash -898630332, now seen corresponding path program 117 times [2022-02-24 03:04:11,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:11,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879196804] [2022-02-24 03:04:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:11,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:11,824 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:11,825 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:16,332 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:16,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879196804] [2022-02-24 03:04:16,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [879196804] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:16,332 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:16,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-02-24 03:04:16,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282448375] [2022-02-24 03:04:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:16,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-02-24 03:04:16,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-02-24 03:04:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-02-24 03:04:16,335 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand has 121 states, 121 states have (on average 2.0) internal successors, (242), 120 states have internal predecessors, (242), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:21,712 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2022-02-24 03:04:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-02-24 03:04:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.0) internal successors, (242), 120 states have internal predecessors, (242), 2 states have call successors, (3), 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 246 [2022-02-24 03:04:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:21,713 INFO L225 Difference]: With dead ends: 256 [2022-02-24 03:04:21,713 INFO L226 Difference]: Without dead ends: 250 [2022-02-24 03:04:21,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2022-02-24 03:04:21,715 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 244 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:21,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 34 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:04:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-02-24 03:04:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2022-02-24 03:04:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 244 states have (on average 1.0040983606557377) internal successors, (245), 244 states have internal predecessors, (245), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2022-02-24 03:04:21,800 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2022-02-24 03:04:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:21,800 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2022-02-24 03:04:21,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.0) internal successors, (242), 120 states have internal predecessors, (242), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2022-02-24 03:04:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-02-24 03:04:21,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:21,801 INFO L514 BasicCegarLoop]: trace histogram [118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:21,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-02-24 03:04:21,801 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:21,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1169409946, now seen corresponding path program 118 times [2022-02-24 03:04:21,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:21,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105982098] [2022-02-24 03:04:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:21,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:21,810 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:21,810 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:26,346 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:26,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105982098] [2022-02-24 03:04:26,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [105982098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:26,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:26,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-02-24 03:04:26,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528272285] [2022-02-24 03:04:26,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:26,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-02-24 03:04:26,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:26,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-02-24 03:04:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-02-24 03:04:26,349 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand has 122 states, 122 states have (on average 2.0) internal successors, (244), 121 states have internal predecessors, (244), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:31,769 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2022-02-24 03:04:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-02-24 03:04:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.0) internal successors, (244), 121 states have internal predecessors, (244), 2 states have call successors, (3), 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 248 [2022-02-24 03:04:31,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:31,770 INFO L225 Difference]: With dead ends: 258 [2022-02-24 03:04:31,770 INFO L226 Difference]: Without dead ends: 252 [2022-02-24 03:04:31,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2022-02-24 03:04:31,772 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 246 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:31,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 34 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:04:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-02-24 03:04:31,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2022-02-24 03:04:31,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 246 states have (on average 1.0040650406504066) internal successors, (247), 246 states have internal predecessors, (247), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2022-02-24 03:04:31,861 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2022-02-24 03:04:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:31,861 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2022-02-24 03:04:31,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.0) internal successors, (244), 121 states have internal predecessors, (244), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2022-02-24 03:04:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-02-24 03:04:31,862 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:31,862 INFO L514 BasicCegarLoop]: trace histogram [119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:31,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-02-24 03:04:31,862 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash 604386056, now seen corresponding path program 119 times [2022-02-24 03:04:31,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:31,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67908471] [2022-02-24 03:04:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:31,872 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:31,872 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:36,485 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:36,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67908471] [2022-02-24 03:04:36,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [67908471] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:36,485 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:36,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-02-24 03:04:36,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189547379] [2022-02-24 03:04:36,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:36,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-02-24 03:04:36,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-02-24 03:04:36,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-02-24 03:04:36,487 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand has 123 states, 123 states have (on average 2.0) internal successors, (246), 122 states have internal predecessors, (246), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:42,005 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2022-02-24 03:04:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-02-24 03:04:42,006 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.0) internal successors, (246), 122 states have internal predecessors, (246), 2 states have call successors, (3), 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 250 [2022-02-24 03:04:42,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:42,006 INFO L225 Difference]: With dead ends: 260 [2022-02-24 03:04:42,006 INFO L226 Difference]: Without dead ends: 254 [2022-02-24 03:04:42,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2022-02-24 03:04:42,009 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 248 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:42,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 49 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:04:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-02-24 03:04:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2022-02-24 03:04:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 248 states have (on average 1.0040322580645162) internal successors, (249), 248 states have internal predecessors, (249), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2022-02-24 03:04:42,099 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2022-02-24 03:04:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:42,099 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2022-02-24 03:04:42,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.0) internal successors, (246), 122 states have internal predecessors, (246), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2022-02-24 03:04:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-02-24 03:04:42,100 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:42,100 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:42,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-02-24 03:04:42,100 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash 120327466, now seen corresponding path program 120 times [2022-02-24 03:04:42,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:42,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085715626] [2022-02-24 03:04:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:42,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:42,109 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:42,109 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:46,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:46,764 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:46,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085715626] [2022-02-24 03:04:46,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1085715626] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:46,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:46,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-02-24 03:04:46,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617665096] [2022-02-24 03:04:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:46,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-02-24 03:04:46,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:46,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-02-24 03:04:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2022-02-24 03:04:46,767 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand has 124 states, 124 states have (on average 2.0) internal successors, (248), 123 states have internal predecessors, (248), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:04:52,373 INFO L93 Difference]: Finished difference Result 262 states and 262 transitions. [2022-02-24 03:04:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-02-24 03:04:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.0) internal successors, (248), 123 states have internal predecessors, (248), 2 states have call successors, (3), 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 252 [2022-02-24 03:04:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:04:52,374 INFO L225 Difference]: With dead ends: 262 [2022-02-24 03:04:52,374 INFO L226 Difference]: Without dead ends: 256 [2022-02-24 03:04:52,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780 [2022-02-24 03:04:52,377 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 250 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:04:52,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 44 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:04:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-02-24 03:04:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2022-02-24 03:04:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.004) internal successors, (251), 250 states have internal predecessors, (251), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2022-02-24 03:04:52,480 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2022-02-24 03:04:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:04:52,481 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2022-02-24 03:04:52,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.0) internal successors, (248), 123 states have internal predecessors, (248), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:04:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2022-02-24 03:04:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-02-24 03:04:52,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:04:52,481 INFO L514 BasicCegarLoop]: trace histogram [121, 121, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:04:52,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-02-24 03:04:52,482 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:04:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:04:52,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1203509556, now seen corresponding path program 121 times [2022-02-24 03:04:52,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:04:52,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023344090] [2022-02-24 03:04:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:04:52,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:04:52,493 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:04:52,493 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:04:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:57,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:04:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:04:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:04:57,197 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:04:57,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023344090] [2022-02-24 03:04:57,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2023344090] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:04:57,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:04:57,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2022-02-24 03:04:57,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106631996] [2022-02-24 03:04:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:04:57,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-02-24 03:04:57,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:04:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-02-24 03:04:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2022-02-24 03:04:57,201 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand has 125 states, 125 states have (on average 2.0) internal successors, (250), 124 states have internal predecessors, (250), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:02,943 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2022-02-24 03:05:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-24 03:05:02,943 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.0) internal successors, (250), 124 states have internal predecessors, (250), 2 states have call successors, (3), 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 254 [2022-02-24 03:05:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:02,944 INFO L225 Difference]: With dead ends: 264 [2022-02-24 03:05:02,944 INFO L226 Difference]: Without dead ends: 258 [2022-02-24 03:05:02,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762 [2022-02-24 03:05:02,948 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:02,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 39 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:05:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-02-24 03:05:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2022-02-24 03:05:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 252 states have (on average 1.003968253968254) internal successors, (253), 252 states have internal predecessors, (253), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2022-02-24 03:05:03,084 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2022-02-24 03:05:03,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:03,084 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2022-02-24 03:05:03,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.0) internal successors, (250), 124 states have internal predecessors, (250), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2022-02-24 03:05:03,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-02-24 03:05:03,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:03,085 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:03,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-02-24 03:05:03,085 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2100568082, now seen corresponding path program 122 times [2022-02-24 03:05:03,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:03,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711855424] [2022-02-24 03:05:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:03,094 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:03,094 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:07,940 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:07,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711855424] [2022-02-24 03:05:07,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1711855424] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:07,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:07,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-02-24 03:05:07,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729067357] [2022-02-24 03:05:07,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:07,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-02-24 03:05:07,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:07,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-02-24 03:05:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2022-02-24 03:05:07,943 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand has 126 states, 126 states have (on average 2.0) internal successors, (252), 125 states have internal predecessors, (252), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:13,781 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2022-02-24 03:05:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-24 03:05:13,781 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.0) internal successors, (252), 125 states have internal predecessors, (252), 2 states have call successors, (3), 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 256 [2022-02-24 03:05:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:13,782 INFO L225 Difference]: With dead ends: 266 [2022-02-24 03:05:13,782 INFO L226 Difference]: Without dead ends: 260 [2022-02-24 03:05:13,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752 [2022-02-24 03:05:13,784 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 254 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:13,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 59 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:05:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-02-24 03:05:13,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2022-02-24 03:05:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 254 states have (on average 1.0039370078740157) internal successors, (255), 254 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2022-02-24 03:05:13,877 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2022-02-24 03:05:13,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:13,877 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2022-02-24 03:05:13,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.0) internal successors, (252), 125 states have internal predecessors, (252), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:13,878 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2022-02-24 03:05:13,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-02-24 03:05:13,878 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:13,878 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:13,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-02-24 03:05:13,879 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash -885385072, now seen corresponding path program 123 times [2022-02-24 03:05:13,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:13,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387818778] [2022-02-24 03:05:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:13,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:13,888 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:13,888 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:18,770 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:18,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387818778] [2022-02-24 03:05:18,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [387818778] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:18,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:18,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2022-02-24 03:05:18,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57489013] [2022-02-24 03:05:18,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:18,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-02-24 03:05:18,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-02-24 03:05:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2022-02-24 03:05:18,774 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand has 127 states, 127 states have (on average 2.0) internal successors, (254), 126 states have internal predecessors, (254), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:24,715 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2022-02-24 03:05:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-24 03:05:24,715 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0) internal successors, (254), 126 states have internal predecessors, (254), 2 states have call successors, (3), 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 258 [2022-02-24 03:05:24,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:24,716 INFO L225 Difference]: With dead ends: 268 [2022-02-24 03:05:24,716 INFO L226 Difference]: Without dead ends: 262 [2022-02-24 03:05:24,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2022-02-24 03:05:24,719 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 256 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:24,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 49 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:05:24,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-02-24 03:05:24,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2022-02-24 03:05:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 256 states have (on average 1.00390625) internal successors, (257), 256 states have internal predecessors, (257), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2022-02-24 03:05:24,831 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2022-02-24 03:05:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:24,831 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2022-02-24 03:05:24,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.0) internal successors, (254), 126 states have internal predecessors, (254), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2022-02-24 03:05:24,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-02-24 03:05:24,832 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:24,832 INFO L514 BasicCegarLoop]: trace histogram [124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:24,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-02-24 03:05:24,832 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:24,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:24,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1325616974, now seen corresponding path program 124 times [2022-02-24 03:05:24,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:24,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051432453] [2022-02-24 03:05:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:24,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:24,842 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:24,843 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:29,841 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:29,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051432453] [2022-02-24 03:05:29,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2051432453] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:29,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:29,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2022-02-24 03:05:29,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263129437] [2022-02-24 03:05:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:29,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-02-24 03:05:29,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:29,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-02-24 03:05:29,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2022-02-24 03:05:29,843 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand has 128 states, 128 states have (on average 2.0) internal successors, (256), 127 states have internal predecessors, (256), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:35,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:35,757 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2022-02-24 03:05:35,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-24 03:05:35,757 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.0) internal successors, (256), 127 states have internal predecessors, (256), 2 states have call successors, (3), 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 260 [2022-02-24 03:05:35,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:35,758 INFO L225 Difference]: With dead ends: 270 [2022-02-24 03:05:35,758 INFO L226 Difference]: Without dead ends: 264 [2022-02-24 03:05:35,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756 [2022-02-24 03:05:35,761 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 258 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:35,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 44 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:05:35,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-02-24 03:05:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2022-02-24 03:05:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.003875968992248) internal successors, (259), 258 states have internal predecessors, (259), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2022-02-24 03:05:35,857 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2022-02-24 03:05:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:35,858 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2022-02-24 03:05:35,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.0) internal successors, (256), 127 states have internal predecessors, (256), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2022-02-24 03:05:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-02-24 03:05:35,858 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:35,858 INFO L514 BasicCegarLoop]: trace histogram [125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:35,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-02-24 03:05:35,859 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash 813287508, now seen corresponding path program 125 times [2022-02-24 03:05:35,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:35,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022594718] [2022-02-24 03:05:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:35,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:35,869 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:35,869 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:40,931 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:40,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022594718] [2022-02-24 03:05:40,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1022594718] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:40,931 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:40,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2022-02-24 03:05:40,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413442646] [2022-02-24 03:05:40,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:40,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-02-24 03:05:40,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:40,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-02-24 03:05:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2022-02-24 03:05:40,934 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand has 129 states, 129 states have (on average 2.0) internal successors, (258), 128 states have internal predecessors, (258), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:46,918 INFO L93 Difference]: Finished difference Result 272 states and 272 transitions. [2022-02-24 03:05:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-24 03:05:46,918 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0) internal successors, (258), 128 states have internal predecessors, (258), 2 states have call successors, (3), 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 262 [2022-02-24 03:05:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:46,919 INFO L225 Difference]: With dead ends: 272 [2022-02-24 03:05:46,919 INFO L226 Difference]: Without dead ends: 266 [2022-02-24 03:05:46,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770 [2022-02-24 03:05:46,922 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 260 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:46,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 44 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:05:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-02-24 03:05:47,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2022-02-24 03:05:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 260 states have (on average 1.0038461538461538) internal successors, (261), 260 states have internal predecessors, (261), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2022-02-24 03:05:47,032 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2022-02-24 03:05:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:47,032 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2022-02-24 03:05:47,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0) internal successors, (258), 128 states have internal predecessors, (258), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2022-02-24 03:05:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-02-24 03:05:47,033 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:47,033 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:47,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-02-24 03:05:47,034 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash -988840074, now seen corresponding path program 126 times [2022-02-24 03:05:47,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:47,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142161288] [2022-02-24 03:05:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:47,045 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:47,045 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:05:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:05:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:05:52,101 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:05:52,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142161288] [2022-02-24 03:05:52,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2142161288] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:05:52,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:05:52,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130 [2022-02-24 03:05:52,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523408454] [2022-02-24 03:05:52,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:05:52,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-02-24 03:05:52,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:05:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-02-24 03:05:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2022-02-24 03:05:52,105 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand has 130 states, 130 states have (on average 2.0) internal successors, (260), 129 states have internal predecessors, (260), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:05:58,250 INFO L93 Difference]: Finished difference Result 274 states and 274 transitions. [2022-02-24 03:05:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-24 03:05:58,250 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.0) internal successors, (260), 129 states have internal predecessors, (260), 2 states have call successors, (3), 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 264 [2022-02-24 03:05:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:05:58,251 INFO L225 Difference]: With dead ends: 274 [2022-02-24 03:05:58,251 INFO L226 Difference]: Without dead ends: 268 [2022-02-24 03:05:58,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792 [2022-02-24 03:05:58,254 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 262 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:05:58,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 24 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:05:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-02-24 03:05:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2022-02-24 03:05:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 262 states have (on average 1.0038167938931297) internal successors, (263), 262 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2022-02-24 03:05:58,367 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2022-02-24 03:05:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:05:58,367 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2022-02-24 03:05:58,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.0) internal successors, (260), 129 states have internal predecessors, (260), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:05:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2022-02-24 03:05:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-02-24 03:05:58,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:05:58,368 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:05:58,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-02-24 03:05:58,368 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:05:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:05:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1961626088, now seen corresponding path program 127 times [2022-02-24 03:05:58,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:05:58,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906251397] [2022-02-24 03:05:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:05:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:05:58,378 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:05:58,378 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:05:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:03,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:06:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:06:03,538 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:06:03,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906251397] [2022-02-24 03:06:03,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [906251397] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:06:03,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:06:03,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2022-02-24 03:06:03,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409002910] [2022-02-24 03:06:03,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:06:03,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-02-24 03:06:03,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:06:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-02-24 03:06:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2022-02-24 03:06:03,541 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand has 131 states, 131 states have (on average 2.0) internal successors, (262), 130 states have internal predecessors, (262), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:06:09,812 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2022-02-24 03:06:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-02-24 03:06:09,812 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.0) internal successors, (262), 130 states have internal predecessors, (262), 2 states have call successors, (3), 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 266 [2022-02-24 03:06:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:06:09,813 INFO L225 Difference]: With dead ends: 276 [2022-02-24 03:06:09,813 INFO L226 Difference]: Without dead ends: 270 [2022-02-24 03:06:09,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2022-02-24 03:06:09,816 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 264 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:06:09,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 44 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:06:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-02-24 03:06:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2022-02-24 03:06:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 264 states have (on average 1.003787878787879) internal successors, (265), 264 states have internal predecessors, (265), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2022-02-24 03:06:09,934 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2022-02-24 03:06:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:06:09,934 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2022-02-24 03:06:09,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.0) internal successors, (262), 130 states have internal predecessors, (262), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2022-02-24 03:06:09,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-02-24 03:06:09,935 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:06:09,935 INFO L514 BasicCegarLoop]: trace histogram [128, 128, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:06:09,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-02-24 03:06:09,935 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:06:09,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:06:09,935 INFO L85 PathProgramCache]: Analyzing trace with hash -506115014, now seen corresponding path program 128 times [2022-02-24 03:06:09,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:06:09,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550444031] [2022-02-24 03:06:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:06:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:06:09,945 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:06:09,945 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:06:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:06:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:06:15,221 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:06:15,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550444031] [2022-02-24 03:06:15,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [550444031] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:06:15,221 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:06:15,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132 [2022-02-24 03:06:15,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341895063] [2022-02-24 03:06:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:06:15,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-02-24 03:06:15,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:06:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-02-24 03:06:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2022-02-24 03:06:15,223 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand has 132 states, 132 states have (on average 2.0) internal successors, (264), 131 states have internal predecessors, (264), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:06:21,571 INFO L93 Difference]: Finished difference Result 278 states and 278 transitions. [2022-02-24 03:06:21,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-24 03:06:21,572 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.0) internal successors, (264), 131 states have internal predecessors, (264), 2 states have call successors, (3), 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 268 [2022-02-24 03:06:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:06:21,572 INFO L225 Difference]: With dead ends: 278 [2022-02-24 03:06:21,572 INFO L226 Difference]: Without dead ends: 272 [2022-02-24 03:06:21,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860 [2022-02-24 03:06:21,575 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 266 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:06:21,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 44 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:06:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-02-24 03:06:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-02-24 03:06:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 266 states have (on average 1.0037593984962405) internal successors, (267), 266 states have internal predecessors, (267), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2022-02-24 03:06:21,695 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2022-02-24 03:06:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:06:21,695 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2022-02-24 03:06:21,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.0) internal successors, (264), 131 states have internal predecessors, (264), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2022-02-24 03:06:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-02-24 03:06:21,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:06:21,696 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:06:21,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-02-24 03:06:21,696 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:06:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:06:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1919311396, now seen corresponding path program 129 times [2022-02-24 03:06:21,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:06:21,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057586039] [2022-02-24 03:06:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:06:21,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:06:21,708 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:06:21,708 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:06:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:06:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:06:27,061 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:06:27,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057586039] [2022-02-24 03:06:27,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2057586039] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:06:27,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:06:27,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133 [2022-02-24 03:06:27,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002909731] [2022-02-24 03:06:27,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:06:27,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-02-24 03:06:27,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:06:27,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-02-24 03:06:27,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2022-02-24 03:06:27,064 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand has 133 states, 133 states have (on average 2.0) internal successors, (266), 132 states have internal predecessors, (266), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:06:33,487 INFO L93 Difference]: Finished difference Result 280 states and 280 transitions. [2022-02-24 03:06:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-02-24 03:06:33,488 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.0) internal successors, (266), 132 states have internal predecessors, (266), 2 states have call successors, (3), 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 270 [2022-02-24 03:06:33,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:06:33,488 INFO L225 Difference]: With dead ends: 280 [2022-02-24 03:06:33,488 INFO L226 Difference]: Without dead ends: 274 [2022-02-24 03:06:33,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906 [2022-02-24 03:06:33,491 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 268 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:06:33,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 34 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:06:33,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-02-24 03:06:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-02-24 03:06:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 268 states have (on average 1.0037313432835822) internal successors, (269), 268 states have internal predecessors, (269), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2022-02-24 03:06:33,612 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2022-02-24 03:06:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:06:33,612 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2022-02-24 03:06:33,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.0) internal successors, (266), 132 states have internal predecessors, (266), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2022-02-24 03:06:33,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-02-24 03:06:33,613 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:06:33,613 INFO L514 BasicCegarLoop]: trace histogram [130, 130, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:06:33,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-02-24 03:06:33,613 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:06:33,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:06:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1503598334, now seen corresponding path program 130 times [2022-02-24 03:06:33,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:06:33,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400819498] [2022-02-24 03:06:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:06:33,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:06:33,623 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:06:33,623 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:06:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:06:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:06:39,055 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:06:39,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400819498] [2022-02-24 03:06:39,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [400819498] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:06:39,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:06:39,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134 [2022-02-24 03:06:39,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327496689] [2022-02-24 03:06:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:06:39,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-02-24 03:06:39,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:06:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-02-24 03:06:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2022-02-24 03:06:39,057 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand has 134 states, 134 states have (on average 2.0) internal successors, (268), 133 states have internal predecessors, (268), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:06:45,577 INFO L93 Difference]: Finished difference Result 282 states and 282 transitions. [2022-02-24 03:06:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-02-24 03:06:45,577 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.0) internal successors, (268), 133 states have internal predecessors, (268), 2 states have call successors, (3), 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 272 [2022-02-24 03:06:45,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:06:45,578 INFO L225 Difference]: With dead ends: 282 [2022-02-24 03:06:45,578 INFO L226 Difference]: Without dead ends: 276 [2022-02-24 03:06:45,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960 [2022-02-24 03:06:45,581 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 270 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:06:45,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 49 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:06:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-02-24 03:06:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2022-02-24 03:06:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.0037037037037038) internal successors, (271), 270 states have internal predecessors, (271), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2022-02-24 03:06:45,703 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2022-02-24 03:06:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:06:45,703 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2022-02-24 03:06:45,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.0) internal successors, (268), 133 states have internal predecessors, (268), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2022-02-24 03:06:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-02-24 03:06:45,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:06:45,704 INFO L514 BasicCegarLoop]: trace histogram [131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:06:45,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-02-24 03:06:45,704 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:06:45,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:06:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash 974900128, now seen corresponding path program 131 times [2022-02-24 03:06:45,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:06:45,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112321872] [2022-02-24 03:06:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:06:45,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:06:45,714 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:06:45,714 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:06:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:51,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:06:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:06:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:06:51,197 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:06:51,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112321872] [2022-02-24 03:06:51,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1112321872] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:06:51,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:06:51,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135 [2022-02-24 03:06:51,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973098383] [2022-02-24 03:06:51,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:06:51,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-02-24 03:06:51,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:06:51,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-02-24 03:06:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2022-02-24 03:06:51,201 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand has 135 states, 135 states have (on average 2.0) internal successors, (270), 134 states have internal predecessors, (270), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:57,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:06:57,828 INFO L93 Difference]: Finished difference Result 284 states and 284 transitions. [2022-02-24 03:06:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-24 03:06:57,829 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.0) internal successors, (270), 134 states have internal predecessors, (270), 2 states have call successors, (3), 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 274 [2022-02-24 03:06:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:06:57,829 INFO L225 Difference]: With dead ends: 284 [2022-02-24 03:06:57,829 INFO L226 Difference]: Without dead ends: 278 [2022-02-24 03:06:57,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2022-02-24 03:06:57,832 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 272 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 03:06:57,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 39 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 03:06:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-02-24 03:06:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2022-02-24 03:06:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 272 states have (on average 1.0036764705882353) internal successors, (273), 272 states have internal predecessors, (273), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2022-02-24 03:06:57,951 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2022-02-24 03:06:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:06:57,952 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2022-02-24 03:06:57,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 2.0) internal successors, (270), 134 states have internal predecessors, (270), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:06:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2022-02-24 03:06:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-02-24 03:06:57,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:06:57,953 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:06:57,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-02-24 03:06:57,953 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:06:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:06:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash -297934910, now seen corresponding path program 132 times [2022-02-24 03:06:57,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:06:57,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639705711] [2022-02-24 03:06:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:06:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:06:57,964 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:06:57,964 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:06:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:07:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:07:03,539 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:07:03,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639705711] [2022-02-24 03:07:03,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [639705711] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:07:03,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:07:03,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136 [2022-02-24 03:07:03,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834988471] [2022-02-24 03:07:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:07:03,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-02-24 03:07:03,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:07:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-02-24 03:07:03,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2022-02-24 03:07:03,543 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand has 136 states, 136 states have (on average 2.0) internal successors, (272), 135 states have internal predecessors, (272), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:07:10,288 INFO L93 Difference]: Finished difference Result 286 states and 286 transitions. [2022-02-24 03:07:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-02-24 03:07:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.0) internal successors, (272), 135 states have internal predecessors, (272), 2 states have call successors, (3), 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 276 [2022-02-24 03:07:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:07:10,289 INFO L225 Difference]: With dead ends: 286 [2022-02-24 03:07:10,289 INFO L226 Difference]: Without dead ends: 280 [2022-02-24 03:07:10,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092 [2022-02-24 03:07:10,292 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 274 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:07:10,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 49 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:07:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-02-24 03:07:10,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2022-02-24 03:07:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 1.0036496350364963) internal successors, (275), 274 states have internal predecessors, (275), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2022-02-24 03:07:10,413 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2022-02-24 03:07:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:07:10,414 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2022-02-24 03:07:10,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.0) internal successors, (272), 135 states have internal predecessors, (272), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2022-02-24 03:07:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-02-24 03:07:10,415 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:07:10,415 INFO L514 BasicCegarLoop]: trace histogram [133, 133, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:07:10,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-02-24 03:07:10,415 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:07:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:07:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash 573272932, now seen corresponding path program 133 times [2022-02-24 03:07:10,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:07:10,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415727314] [2022-02-24 03:07:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:07:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:07:10,427 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:07:10,427 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:07:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:16,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:07:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:07:16,090 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:07:16,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415727314] [2022-02-24 03:07:16,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1415727314] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:07:16,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:07:16,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137 [2022-02-24 03:07:16,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973977079] [2022-02-24 03:07:16,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:07:16,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-02-24 03:07:16,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:07:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-02-24 03:07:16,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2022-02-24 03:07:16,094 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand has 137 states, 137 states have (on average 2.0) internal successors, (274), 136 states have internal predecessors, (274), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:07:22,893 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2022-02-24 03:07:22,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-24 03:07:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.0) internal successors, (274), 136 states have internal predecessors, (274), 2 states have call successors, (3), 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 278 [2022-02-24 03:07:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:07:22,894 INFO L225 Difference]: With dead ends: 288 [2022-02-24 03:07:22,894 INFO L226 Difference]: Without dead ends: 282 [2022-02-24 03:07:22,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9044 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=27540, Invalid=45630, Unknown=0, NotChecked=0, Total=73170 [2022-02-24 03:07:22,897 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 276 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:07:22,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 34 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:07:22,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-02-24 03:07:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2022-02-24 03:07:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.0036231884057971) internal successors, (277), 276 states have internal predecessors, (277), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2022-02-24 03:07:23,016 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2022-02-24 03:07:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:07:23,016 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2022-02-24 03:07:23,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.0) internal successors, (274), 136 states have internal predecessors, (274), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2022-02-24 03:07:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-02-24 03:07:23,017 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:07:23,017 INFO L514 BasicCegarLoop]: trace histogram [134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:07:23,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-02-24 03:07:23,018 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:07:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:07:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash 285386374, now seen corresponding path program 134 times [2022-02-24 03:07:23,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:07:23,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277411554] [2022-02-24 03:07:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:07:23,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:07:23,029 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:07:23,029 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:07:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:28,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:07:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:07:28,783 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:07:28,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277411554] [2022-02-24 03:07:28,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [277411554] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:07:28,784 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:07:28,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138 [2022-02-24 03:07:28,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358940468] [2022-02-24 03:07:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:07:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-02-24 03:07:28,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:07:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-02-24 03:07:28,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2022-02-24 03:07:28,788 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand has 138 states, 138 states have (on average 2.0) internal successors, (276), 137 states have internal predecessors, (276), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:07:35,727 INFO L93 Difference]: Finished difference Result 290 states and 290 transitions. [2022-02-24 03:07:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-02-24 03:07:35,728 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 2.0) internal successors, (276), 137 states have internal predecessors, (276), 2 states have call successors, (3), 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 280 [2022-02-24 03:07:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:07:35,728 INFO L225 Difference]: With dead ends: 290 [2022-02-24 03:07:35,728 INFO L226 Difference]: Without dead ends: 284 [2022-02-24 03:07:35,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9179 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=27948, Invalid=46308, Unknown=0, NotChecked=0, Total=74256 [2022-02-24 03:07:35,731 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 278 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:07:35,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 49 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:07:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-02-24 03:07:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 283. [2022-02-24 03:07:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 278 states have (on average 1.0035971223021583) internal successors, (279), 278 states have internal predecessors, (279), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2022-02-24 03:07:35,854 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2022-02-24 03:07:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:07:35,854 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2022-02-24 03:07:35,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 2.0) internal successors, (276), 137 states have internal predecessors, (276), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2022-02-24 03:07:35,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-02-24 03:07:35,855 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:07:35,855 INFO L514 BasicCegarLoop]: trace histogram [135, 135, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:07:35,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-02-24 03:07:35,855 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:07:35,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:07:35,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1495688920, now seen corresponding path program 135 times [2022-02-24 03:07:35,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:07:35,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141866805] [2022-02-24 03:07:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:07:35,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:07:35,867 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:07:35,867 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:07:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:07:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:07:41,735 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:07:41,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141866805] [2022-02-24 03:07:41,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [141866805] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:07:41,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:07:41,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [139] imperfect sequences [] total 139 [2022-02-24 03:07:41,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872860720] [2022-02-24 03:07:41,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:07:41,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-02-24 03:07:41,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:07:41,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-02-24 03:07:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2022-02-24 03:07:41,738 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand has 139 states, 139 states have (on average 2.0) internal successors, (278), 138 states have internal predecessors, (278), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:07:48,754 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2022-02-24 03:07:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-02-24 03:07:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.0) internal successors, (278), 138 states have internal predecessors, (278), 2 states have call successors, (3), 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 282 [2022-02-24 03:07:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:07:48,755 INFO L225 Difference]: With dead ends: 292 [2022-02-24 03:07:48,755 INFO L226 Difference]: Without dead ends: 286 [2022-02-24 03:07:48,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2022-02-24 03:07:48,759 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 280 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:07:48,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 49 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:07:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-02-24 03:07:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2022-02-24 03:07:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.0035714285714286) internal successors, (281), 280 states have internal predecessors, (281), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2022-02-24 03:07:48,887 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2022-02-24 03:07:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:07:48,887 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2022-02-24 03:07:48,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.0) internal successors, (278), 138 states have internal predecessors, (278), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:07:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2022-02-24 03:07:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-02-24 03:07:48,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:07:48,888 INFO L514 BasicCegarLoop]: trace histogram [136, 136, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:07:48,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-02-24 03:07:48,889 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:07:48,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:07:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash 582904650, now seen corresponding path program 136 times [2022-02-24 03:07:48,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:07:48,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874019752] [2022-02-24 03:07:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:07:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:07:48,900 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:07:48,900 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:07:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:07:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:07:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:07:54,803 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:07:54,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874019752] [2022-02-24 03:07:54,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [874019752] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:07:54,803 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:07:54,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [140] imperfect sequences [] total 140 [2022-02-24 03:07:54,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183791321] [2022-02-24 03:07:54,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:07:54,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-02-24 03:07:54,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:07:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-02-24 03:07:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2022-02-24 03:07:54,806 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand has 140 states, 140 states have (on average 2.0) internal successors, (280), 139 states have internal predecessors, (280), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 03:08:01,934 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2022-02-24 03:08:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-24 03:08:01,934 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.0) internal successors, (280), 139 states have internal predecessors, (280), 2 states have call successors, (3), 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 284 [2022-02-24 03:08:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 03:08:01,935 INFO L225 Difference]: With dead ends: 294 [2022-02-24 03:08:01,935 INFO L226 Difference]: Without dead ends: 288 [2022-02-24 03:08:01,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9452 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=28773, Invalid=47679, Unknown=0, NotChecked=0, Total=76452 [2022-02-24 03:08:01,938 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 282 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 03:08:01,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 34 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 03:08:01,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-02-24 03:08:02,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2022-02-24 03:08:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 282 states have (on average 1.00354609929078) internal successors, (283), 282 states have internal predecessors, (283), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2022-02-24 03:08:02,072 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2022-02-24 03:08:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 03:08:02,072 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2022-02-24 03:08:02,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.0) internal successors, (280), 139 states have internal predecessors, (280), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 03:08:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2022-02-24 03:08:02,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-02-24 03:08:02,073 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 03:08:02,073 INFO L514 BasicCegarLoop]: trace histogram [137, 137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 03:08:02,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-02-24 03:08:02,073 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 03:08:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 03:08:02,074 INFO L85 PathProgramCache]: Analyzing trace with hash 951532780, now seen corresponding path program 137 times [2022-02-24 03:08:02,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 03:08:02,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920464387] [2022-02-24 03:08:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 03:08:02,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 03:08:02,085 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 03:08:02,085 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 03:08:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:08:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 03:08:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 03:08:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 03:08:08,072 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 03:08:08,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920464387] [2022-02-24 03:08:08,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [920464387] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 03:08:08,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 03:08:08,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [141] imperfect sequences [] total 141 [2022-02-24 03:08:08,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994927729] [2022-02-24 03:08:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 03:08:08,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-02-24 03:08:08,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 03:08:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-02-24 03:08:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2022-02-24 03:08:08,079 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand has 141 states, 141 states have (on average 2.0) internal successors, (282), 140 states have internal predecessors, (282), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)