/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/compact.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:45:15,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:45:15,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:45:15,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:45:15,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:45:15,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:45:15,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:45:15,622 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 02:45:15,633 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:45:15,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:45:15,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:45:15,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:45:15,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:45:15,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:45:15,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:45:15,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:45:15,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:45:15,637 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:45:15,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:45:15,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:45:15,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:45:15,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:45:15,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:45:15,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:45:15,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:45:15,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:45:15,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:45:15,638 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 02:45:15,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:45:15,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:45:15,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:45:15,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:45:15,912 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:45:15,916 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:45:15,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/compact.c [2022-02-24 02:45:15,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1402d1cb7/e85b7e1b84644f7fbce22bebf6d0e89a/FLAG25e0e7d6a [2022-02-24 02:45:16,378 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:45:16,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/compact.c [2022-02-24 02:45:16,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1402d1cb7/e85b7e1b84644f7fbce22bebf6d0e89a/FLAG25e0e7d6a [2022-02-24 02:45:16,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1402d1cb7/e85b7e1b84644f7fbce22bebf6d0e89a [2022-02-24 02:45:16,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:45:16,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:45:16,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:45:16,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:45:16,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:45:16,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63440705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16, skipping insertion in model container [2022-02-24 02:45:16,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:45:16,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:45:16,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/compact.c[609,622] [2022-02-24 02:45:16,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:45:16,594 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:45:16,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/compact.c[609,622] [2022-02-24 02:45:16,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:45:16,628 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:45:16,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16 WrapperNode [2022-02-24 02:45:16,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:45:16,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:45:16,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:45:16,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:45:16,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:45:16,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:45:16,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:45:16,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:45:16,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (1/1) ... [2022-02-24 02:45:16,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:45:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:45:16,704 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 02:45:16,706 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 02:45:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:45:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:45:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:45:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:45:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:45:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:45:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:45:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:45:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 02:45:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:45:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:45:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:45:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:45:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:45:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:45:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:45:16,809 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:45:16,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:45:16,976 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:45:16,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:45:16,981 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-24 02:45:16,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:45:16 BoogieIcfgContainer [2022-02-24 02:45:16,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:45:16,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:45:16,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:45:16,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:45:16,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:45:16" (1/3) ... [2022-02-24 02:45:16,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56496534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:45:16, skipping insertion in model container [2022-02-24 02:45:16,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:45:16" (2/3) ... [2022-02-24 02:45:16,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56496534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:45:16, skipping insertion in model container [2022-02-24 02:45:16,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:45:16" (3/3) ... [2022-02-24 02:45:16,992 INFO L111 eAbstractionObserver]: Analyzing ICFG compact.c [2022-02-24 02:45:16,996 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:45:16,996 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:45:17,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:45:17,089 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 02:45:17,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:45:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-24 02:45:17,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-24 02:45:17,124 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:17,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:17,125 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:17,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash 927625408, now seen corresponding path program 1 times [2022-02-24 02:45:17,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:17,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120173328] [2022-02-24 02:45:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:17,204 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:45:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:17,384 INFO 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 02:45:17,386 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:17,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120173328] [2022-02-24 02:45:17,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1120173328] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:17,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:17,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-24 02:45:17,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880216945] [2022-02-24 02:45:17,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:17,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-24 02:45:17,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:17,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-24 02:45:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 02:45:17,427 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:17,500 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2022-02-24 02:45:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-24 02:45:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-02-24 02:45:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:17,513 INFO L225 Difference]: With dead ends: 37 [2022-02-24 02:45:17,513 INFO L226 Difference]: Without dead ends: 21 [2022-02-24 02:45:17,516 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 02:45:17,521 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:17,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:45:17,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-24 02:45:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2022-02-24 02:45:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-02-24 02:45:17,559 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2022-02-24 02:45:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:17,560 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-02-24 02:45:17,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-24 02:45:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-24 02:45:17,563 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:17,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:17,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:45:17,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:17,566 INFO L85 PathProgramCache]: Analyzing trace with hash 927446352, now seen corresponding path program 1 times [2022-02-24 02:45:17,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:17,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652506044] [2022-02-24 02:45:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:17,573 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:45:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:17,653 INFO 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 02:45:17,654 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:17,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652506044] [2022-02-24 02:45:17,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [652506044] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:17,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:17,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 02:45:17,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423331194] [2022-02-24 02:45:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:17,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 02:45:17,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 02:45:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 02:45:17,657 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:17,717 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-02-24 02:45:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 02:45:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-02-24 02:45:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:17,720 INFO L225 Difference]: With dead ends: 25 [2022-02-24 02:45:17,720 INFO L226 Difference]: Without dead ends: 19 [2022-02-24 02:45:17,723 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 02:45:17,725 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:17,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 02:45:17,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-02-24 02:45:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2022-02-24 02:45:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-02-24 02:45:17,736 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2022-02-24 02:45:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:17,737 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-02-24 02:45:17,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-02-24 02:45:17,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-24 02:45:17,738 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:17,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:17,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:45:17,739 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash 706936613, now seen corresponding path program 1 times [2022-02-24 02:45:17,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:17,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798286744] [2022-02-24 02:45:17,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:17,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:17,754 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:17,754 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:17,883 INFO 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 02:45:17,883 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:17,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798286744] [2022-02-24 02:45:17,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [798286744] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:17,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:17,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 02:45:17,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602925302] [2022-02-24 02:45:17,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:17,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 02:45:17,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:17,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 02:45:17,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 02:45:17,886 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:17,975 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-02-24 02:45:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 02:45:17,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-24 02:45:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:17,977 INFO L225 Difference]: With dead ends: 31 [2022-02-24 02:45:17,977 INFO L226 Difference]: Without dead ends: 24 [2022-02-24 02:45:17,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:45:17,979 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:17,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:45:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-24 02:45:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-02-24 02:45:17,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-02-24 02:45:17,985 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2022-02-24 02:45:17,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:17,985 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-02-24 02:45:17,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-02-24 02:45:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 02:45:17,986 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:17,987 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:17,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:45:17,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1962996172, now seen corresponding path program 2 times [2022-02-24 02:45:17,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:17,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347563639] [2022-02-24 02:45:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:17,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:17,993 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:17,994 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:18,112 INFO 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 02:45:18,112 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:18,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347563639] [2022-02-24 02:45:18,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [347563639] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:18,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:18,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 02:45:18,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016688075] [2022-02-24 02:45:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:18,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 02:45:18,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:18,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 02:45:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 02:45:18,114 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:18,194 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-02-24 02:45:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 02:45:18,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-02-24 02:45:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:18,196 INFO L225 Difference]: With dead ends: 39 [2022-02-24 02:45:18,196 INFO L226 Difference]: Without dead ends: 29 [2022-02-24 02:45:18,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:45:18,197 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:18,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 31 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:45:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-24 02:45:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-02-24 02:45:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-02-24 02:45:18,203 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2022-02-24 02:45:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:18,204 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-02-24 02:45:18,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,204 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-02-24 02:45:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-24 02:45:18,205 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:18,205 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:18,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 02:45:18,205 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:18,206 INFO L85 PathProgramCache]: Analyzing trace with hash -436810175, now seen corresponding path program 3 times [2022-02-24 02:45:18,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:18,206 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159768500] [2022-02-24 02:45:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:18,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:18,210 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:18,210 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:18,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:18,323 INFO 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 02:45:18,323 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:18,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159768500] [2022-02-24 02:45:18,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [159768500] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:18,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:18,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 02:45:18,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184829529] [2022-02-24 02:45:18,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:18,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 02:45:18,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 02:45:18,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 02:45:18,326 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:18,432 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-02-24 02:45:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 02:45:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-24 02:45:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:18,434 INFO L225 Difference]: With dead ends: 47 [2022-02-24 02:45:18,434 INFO L226 Difference]: Without dead ends: 34 [2022-02-24 02:45:18,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:45:18,437 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:18,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 36 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:45:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-24 02:45:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-02-24 02:45:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-02-24 02:45:18,445 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2022-02-24 02:45:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:18,445 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-02-24 02:45:18,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-02-24 02:45:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-24 02:45:18,446 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:18,446 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:18,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 02:45:18,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash 329033496, now seen corresponding path program 4 times [2022-02-24 02:45:18,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:18,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791267440] [2022-02-24 02:45:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:18,452 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:18,452 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:18,663 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 02:45:18,663 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:18,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791267440] [2022-02-24 02:45:18,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [791267440] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:18,664 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:18,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:45:18,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858724173] [2022-02-24 02:45:18,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:18,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:45:18,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:45:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:45:18,666 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:18,787 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-02-24 02:45:18,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 02:45:18,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-24 02:45:18,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:18,790 INFO L225 Difference]: With dead ends: 55 [2022-02-24 02:45:18,791 INFO L226 Difference]: Without dead ends: 39 [2022-02-24 02:45:18,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:45:18,799 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:18,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:45:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-24 02:45:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-02-24 02:45:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-02-24 02:45:18,816 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2022-02-24 02:45:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:18,817 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-02-24 02:45:18,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:18,817 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-02-24 02:45:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-24 02:45:18,818 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:18,818 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:18,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 02:45:18,819 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:18,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1926970717, now seen corresponding path program 5 times [2022-02-24 02:45:18,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:18,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013898329] [2022-02-24 02:45:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:18,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:18,823 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:18,823 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:18,967 INFO 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 02:45:18,968 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:18,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013898329] [2022-02-24 02:45:18,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2013898329] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:18,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:18,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:45:18,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656124003] [2022-02-24 02:45:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:18,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:45:18,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:45:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:45:18,971 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:19,102 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2022-02-24 02:45:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 02:45:19,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-02-24 02:45:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:19,106 INFO L225 Difference]: With dead ends: 63 [2022-02-24 02:45:19,106 INFO L226 Difference]: Without dead ends: 44 [2022-02-24 02:45:19,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:45:19,109 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:19,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:45:19,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-24 02:45:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-02-24 02:45:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-02-24 02:45:19,126 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 35 [2022-02-24 02:45:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:19,126 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-02-24 02:45:19,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-02-24 02:45:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 02:45:19,129 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:19,129 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:19,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 02:45:19,130 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 261275644, now seen corresponding path program 6 times [2022-02-24 02:45:19,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:19,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432564131] [2022-02-24 02:45:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:19,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:19,137 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:19,138 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:19,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:19,353 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 02:45:19,353 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:19,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432564131] [2022-02-24 02:45:19,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432564131] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:19,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:19,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 02:45:19,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068740740] [2022-02-24 02:45:19,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:19,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 02:45:19,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 02:45:19,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-24 02:45:19,358 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:19,528 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2022-02-24 02:45:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 02:45:19,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-02-24 02:45:19,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:19,533 INFO L225 Difference]: With dead ends: 71 [2022-02-24 02:45:19,533 INFO L226 Difference]: Without dead ends: 49 [2022-02-24 02:45:19,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:45:19,534 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:19,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 63 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 02:45:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-24 02:45:19,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-02-24 02:45:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-02-24 02:45:19,552 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40 [2022-02-24 02:45:19,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:19,554 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-02-24 02:45:19,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,554 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-02-24 02:45:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-24 02:45:19,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:19,555 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:19,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 02:45:19,555 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1323430791, now seen corresponding path program 7 times [2022-02-24 02:45:19,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:19,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885592599] [2022-02-24 02:45:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:19,560 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:19,560 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:19,703 INFO 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 02:45:19,703 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:19,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885592599] [2022-02-24 02:45:19,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1885592599] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:19,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:19,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:45:19,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580573837] [2022-02-24 02:45:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:19,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:45:19,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:19,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:45:19,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:45:19,704 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:19,895 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2022-02-24 02:45:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 02:45:19,895 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-02-24 02:45:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:19,897 INFO L225 Difference]: With dead ends: 79 [2022-02-24 02:45:19,897 INFO L226 Difference]: Without dead ends: 54 [2022-02-24 02:45:19,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:45:19,899 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 26 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:19,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 96 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:45:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-24 02:45:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2022-02-24 02:45:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-02-24 02:45:19,920 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 45 [2022-02-24 02:45:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:19,920 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-02-24 02:45:19,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-02-24 02:45:19,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 02:45:19,921 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:19,921 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:19,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 02:45:19,922 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:19,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash 416520416, now seen corresponding path program 8 times [2022-02-24 02:45:19,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:19,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129601038] [2022-02-24 02:45:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:19,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:19,925 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:19,925 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:20,088 INFO 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 02:45:20,088 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:20,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129601038] [2022-02-24 02:45:20,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [129601038] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:20,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:20,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:45:20,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105110538] [2022-02-24 02:45:20,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:20,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:45:20,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:45:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:45:20,090 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:20,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:20,296 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2022-02-24 02:45:20,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 02:45:20,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-02-24 02:45:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:20,297 INFO L225 Difference]: With dead ends: 87 [2022-02-24 02:45:20,297 INFO L226 Difference]: Without dead ends: 59 [2022-02-24 02:45:20,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:45:20,298 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:20,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 121 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:45:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-24 02:45:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2022-02-24 02:45:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-02-24 02:45:20,304 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 50 [2022-02-24 02:45:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:20,305 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-02-24 02:45:20,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-02-24 02:45:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 02:45:20,305 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:20,306 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:20,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 02:45:20,306 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash -208864363, now seen corresponding path program 9 times [2022-02-24 02:45:20,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:20,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584495661] [2022-02-24 02:45:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:20,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:20,313 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:20,314 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:20,490 INFO 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 02:45:20,491 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:20,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584495661] [2022-02-24 02:45:20,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [584495661] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:20,491 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:20,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:45:20,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196430517] [2022-02-24 02:45:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:20,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:45:20,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:20,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:45:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:45:20,492 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:20,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:20,695 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2022-02-24 02:45:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 02:45:20,696 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-02-24 02:45:20,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:20,696 INFO L225 Difference]: With dead ends: 95 [2022-02-24 02:45:20,696 INFO L226 Difference]: Without dead ends: 64 [2022-02-24 02:45:20,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:45:20,697 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:20,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 118 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:45:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-24 02:45:20,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-02-24 02:45:20,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2022-02-24 02:45:20,704 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2022-02-24 02:45:20,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:20,704 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2022-02-24 02:45:20,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:20,704 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2022-02-24 02:45:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 02:45:20,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:20,705 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:20,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 02:45:20,706 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1999539772, now seen corresponding path program 10 times [2022-02-24 02:45:20,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:20,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223018982] [2022-02-24 02:45:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:20,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:20,709 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:20,709 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:20,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:20,909 INFO 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 02:45:20,910 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:20,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223018982] [2022-02-24 02:45:20,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1223018982] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:20,910 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:20,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:45:20,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026903948] [2022-02-24 02:45:20,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:20,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:45:20,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:20,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:45:20,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:45:20,912 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:21,160 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2022-02-24 02:45:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 02:45:21,160 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2022-02-24 02:45:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:21,163 INFO L225 Difference]: With dead ends: 103 [2022-02-24 02:45:21,163 INFO L226 Difference]: Without dead ends: 69 [2022-02-24 02:45:21,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:45:21,164 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:21,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 142 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 02:45:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-24 02:45:21,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2022-02-24 02:45:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-02-24 02:45:21,175 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 60 [2022-02-24 02:45:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:21,175 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-02-24 02:45:21,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-02-24 02:45:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 02:45:21,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:21,178 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:21,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 02:45:21,179 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1686779215, now seen corresponding path program 11 times [2022-02-24 02:45:21,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:21,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920424713] [2022-02-24 02:45:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:21,188 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:21,188 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:21,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:21,429 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 02:45:21,429 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:21,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920424713] [2022-02-24 02:45:21,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [920424713] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:21,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:21,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:45:21,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291173663] [2022-02-24 02:45:21,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:21,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:45:21,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:45:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:45:21,431 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:21,737 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2022-02-24 02:45:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 02:45:21,737 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-02-24 02:45:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:21,738 INFO L225 Difference]: With dead ends: 111 [2022-02-24 02:45:21,738 INFO L226 Difference]: Without dead ends: 74 [2022-02-24 02:45:21,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:45:21,739 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 44 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:21,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 173 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:45:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-24 02:45:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-02-24 02:45:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-02-24 02:45:21,747 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 65 [2022-02-24 02:45:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:21,747 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-02-24 02:45:21,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-02-24 02:45:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 02:45:21,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:21,748 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:21,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 02:45:21,749 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash -595686744, now seen corresponding path program 12 times [2022-02-24 02:45:21,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:21,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390411648] [2022-02-24 02:45:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:21,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:21,752 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:21,752 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:21,978 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 02:45:21,978 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:21,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390411648] [2022-02-24 02:45:21,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [390411648] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:21,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:21,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:45:21,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371237082] [2022-02-24 02:45:21,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:21,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:45:21,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:21,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:45:21,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:45:21,980 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:22,322 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2022-02-24 02:45:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:45:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-02-24 02:45:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:22,323 INFO L225 Difference]: With dead ends: 119 [2022-02-24 02:45:22,323 INFO L226 Difference]: Without dead ends: 79 [2022-02-24 02:45:22,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:45:22,324 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:22,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 181 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-24 02:45:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-24 02:45:22,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2022-02-24 02:45:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-02-24 02:45:22,330 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 70 [2022-02-24 02:45:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:22,330 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-02-24 02:45:22,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-02-24 02:45:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 02:45:22,331 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:22,331 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:22,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 02:45:22,332 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:22,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1264174643, now seen corresponding path program 13 times [2022-02-24 02:45:22,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:22,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289542576] [2022-02-24 02:45:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:22,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:22,335 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:22,336 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:45:22,584 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:22,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289542576] [2022-02-24 02:45:22,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [289542576] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:22,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:22,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 02:45:22,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421988996] [2022-02-24 02:45:22,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:22,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 02:45:22,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 02:45:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:45:22,586 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:22,997 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2022-02-24 02:45:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:45:22,998 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-02-24 02:45:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:22,998 INFO L225 Difference]: With dead ends: 127 [2022-02-24 02:45:22,998 INFO L226 Difference]: Without dead ends: 84 [2022-02-24 02:45:22,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:45:22,999 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:22,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 201 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 02:45:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-24 02:45:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2022-02-24 02:45:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-02-24 02:45:23,008 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 75 [2022-02-24 02:45:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:23,008 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-02-24 02:45:23,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-02-24 02:45:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 02:45:23,010 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:23,010 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:23,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 02:45:23,010 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash 407708556, now seen corresponding path program 14 times [2022-02-24 02:45:23,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:23,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718901857] [2022-02-24 02:45:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:23,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:23,017 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:23,018 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:23,319 INFO 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 02:45:23,319 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:23,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718901857] [2022-02-24 02:45:23,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [718901857] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:23,319 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:23,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 02:45:23,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532020345] [2022-02-24 02:45:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:23,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 02:45:23,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 02:45:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:45:23,321 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:23,745 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2022-02-24 02:45:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:45:23,745 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2022-02-24 02:45:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:23,746 INFO L225 Difference]: With dead ends: 135 [2022-02-24 02:45:23,746 INFO L226 Difference]: Without dead ends: 89 [2022-02-24 02:45:23,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:45:23,747 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 67 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:23,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 228 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 02:45:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-24 02:45:23,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-02-24 02:45:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-02-24 02:45:23,756 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 80 [2022-02-24 02:45:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:23,757 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-02-24 02:45:23,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-02-24 02:45:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-24 02:45:23,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:23,758 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:23,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 02:45:23,758 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1855190807, now seen corresponding path program 15 times [2022-02-24 02:45:23,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:23,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227050812] [2022-02-24 02:45:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:23,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:23,763 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:23,763 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:24,051 INFO 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 02:45:24,052 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:24,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227050812] [2022-02-24 02:45:24,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [227050812] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:24,052 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:24,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 02:45:24,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101812975] [2022-02-24 02:45:24,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:24,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 02:45:24,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:24,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 02:45:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:45:24,053 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:24,514 INFO L93 Difference]: Finished difference Result 143 states and 146 transitions. [2022-02-24 02:45:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:45:24,514 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2022-02-24 02:45:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:24,515 INFO L225 Difference]: With dead ends: 143 [2022-02-24 02:45:24,515 INFO L226 Difference]: Without dead ends: 94 [2022-02-24 02:45:24,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:45:24,516 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 60 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:24,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 287 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-24 02:45:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-24 02:45:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2022-02-24 02:45:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2022-02-24 02:45:24,524 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85 [2022-02-24 02:45:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:24,524 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2022-02-24 02:45:24,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2022-02-24 02:45:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-24 02:45:24,525 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:24,525 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:24,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 02:45:24,525 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:24,526 INFO L85 PathProgramCache]: Analyzing trace with hash 741309552, now seen corresponding path program 16 times [2022-02-24 02:45:24,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:24,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871540176] [2022-02-24 02:45:24,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:24,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:24,530 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:24,530 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:24,870 INFO 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 02:45:24,870 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:24,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871540176] [2022-02-24 02:45:24,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [871540176] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:24,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:24,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 02:45:24,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500594104] [2022-02-24 02:45:24,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:24,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 02:45:24,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 02:45:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:45:24,872 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:25,399 INFO L93 Difference]: Finished difference Result 151 states and 154 transitions. [2022-02-24 02:45:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:45:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2022-02-24 02:45:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:25,400 INFO L225 Difference]: With dead ends: 151 [2022-02-24 02:45:25,400 INFO L226 Difference]: Without dead ends: 99 [2022-02-24 02:45:25,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:45:25,401 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:25,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 273 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 02:45:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-24 02:45:25,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2022-02-24 02:45:25,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-02-24 02:45:25,407 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 90 [2022-02-24 02:45:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:25,408 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-02-24 02:45:25,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-02-24 02:45:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-24 02:45:25,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:25,409 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:25,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 02:45:25,409 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:25,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1721038853, now seen corresponding path program 17 times [2022-02-24 02:45:25,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:25,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296989183] [2022-02-24 02:45:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:25,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:25,414 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:25,414 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:25,776 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 02:45:25,776 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:25,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296989183] [2022-02-24 02:45:25,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [296989183] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:25,776 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:25,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 02:45:25,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102457978] [2022-02-24 02:45:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:25,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 02:45:25,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:25,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 02:45:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:45:25,778 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:26,353 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2022-02-24 02:45:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 02:45:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2022-02-24 02:45:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:26,354 INFO L225 Difference]: With dead ends: 159 [2022-02-24 02:45:26,354 INFO L226 Difference]: Without dead ends: 104 [2022-02-24 02:45:26,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:45:26,355 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 78 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:26,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 331 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-24 02:45:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-24 02:45:26,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2022-02-24 02:45:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2022-02-24 02:45:26,362 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 95 [2022-02-24 02:45:26,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:26,363 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2022-02-24 02:45:26,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2022-02-24 02:45:26,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-24 02:45:26,363 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:26,364 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:26,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 02:45:26,364 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:26,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1469568340, now seen corresponding path program 18 times [2022-02-24 02:45:26,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:26,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989672980] [2022-02-24 02:45:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:26,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:26,367 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:26,367 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:26,754 INFO 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 02:45:26,754 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:26,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989672980] [2022-02-24 02:45:26,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1989672980] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:26,755 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:26,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 02:45:26,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488085736] [2022-02-24 02:45:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:26,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 02:45:26,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 02:45:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:45:26,756 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:27,379 INFO L93 Difference]: Finished difference Result 167 states and 170 transitions. [2022-02-24 02:45:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 02:45:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2022-02-24 02:45:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:27,380 INFO L225 Difference]: With dead ends: 167 [2022-02-24 02:45:27,380 INFO L226 Difference]: Without dead ends: 109 [2022-02-24 02:45:27,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:45:27,381 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 87 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:27,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 356 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 02:45:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-24 02:45:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-02-24 02:45:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-02-24 02:45:27,388 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 100 [2022-02-24 02:45:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:27,388 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-02-24 02:45:27,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-02-24 02:45:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-24 02:45:27,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:27,390 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:27,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 02:45:27,391 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash -412170463, now seen corresponding path program 19 times [2022-02-24 02:45:27,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:27,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734648248] [2022-02-24 02:45:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:27,395 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:27,396 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:27,769 INFO 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 02:45:27,769 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:27,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734648248] [2022-02-24 02:45:27,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1734648248] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:27,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:27,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 02:45:27,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146766678] [2022-02-24 02:45:27,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:27,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 02:45:27,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:27,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 02:45:27,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:45:27,771 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:28,470 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2022-02-24 02:45:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:45:28,471 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2022-02-24 02:45:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:28,472 INFO L225 Difference]: With dead ends: 175 [2022-02-24 02:45:28,472 INFO L226 Difference]: Without dead ends: 114 [2022-02-24 02:45:28,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:45:28,473 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:28,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 453 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-24 02:45:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-24 02:45:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2022-02-24 02:45:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-02-24 02:45:28,480 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 105 [2022-02-24 02:45:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:28,480 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-02-24 02:45:28,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-02-24 02:45:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-24 02:45:28,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:28,481 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:28,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 02:45:28,482 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1921487304, now seen corresponding path program 20 times [2022-02-24 02:45:28,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:28,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251743819] [2022-02-24 02:45:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:28,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:28,485 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:28,485 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:28,899 INFO 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 02:45:28,899 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:28,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251743819] [2022-02-24 02:45:28,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1251743819] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:28,899 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:28,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 02:45:28,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322789468] [2022-02-24 02:45:28,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:28,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 02:45:28,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 02:45:28,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:45:28,901 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:29,640 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2022-02-24 02:45:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:45:29,640 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2022-02-24 02:45:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:29,641 INFO L225 Difference]: With dead ends: 183 [2022-02-24 02:45:29,641 INFO L226 Difference]: Without dead ends: 119 [2022-02-24 02:45:29,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:45:29,642 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:29,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 507 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 02:45:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-24 02:45:29,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2022-02-24 02:45:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2022-02-24 02:45:29,649 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 110 [2022-02-24 02:45:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:29,649 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2022-02-24 02:45:29,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2022-02-24 02:45:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-24 02:45:29,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:29,650 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:29,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 02:45:29,650 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:29,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash -507038147, now seen corresponding path program 21 times [2022-02-24 02:45:29,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:29,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200783949] [2022-02-24 02:45:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:29,654 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:29,654 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:30,074 INFO 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 02:45:30,074 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:30,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200783949] [2022-02-24 02:45:30,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [200783949] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:30,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:30,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 02:45:30,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199735629] [2022-02-24 02:45:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:30,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 02:45:30,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 02:45:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:45:30,076 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:30,800 INFO L93 Difference]: Finished difference Result 191 states and 194 transitions. [2022-02-24 02:45:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 02:45:30,801 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2022-02-24 02:45:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:30,801 INFO L225 Difference]: With dead ends: 191 [2022-02-24 02:45:30,801 INFO L226 Difference]: Without dead ends: 124 [2022-02-24 02:45:30,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:45:30,802 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 104 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:30,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 468 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 02:45:30,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-24 02:45:30,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2022-02-24 02:45:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-02-24 02:45:30,809 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 115 [2022-02-24 02:45:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:30,810 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-02-24 02:45:30,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-02-24 02:45:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-24 02:45:30,811 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:30,811 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:30,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 02:45:30,811 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash -666663140, now seen corresponding path program 22 times [2022-02-24 02:45:30,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:30,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107758856] [2022-02-24 02:45:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:30,815 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:30,815 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:31,235 INFO 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 02:45:31,235 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:31,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107758856] [2022-02-24 02:45:31,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2107758856] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:31,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:31,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 02:45:31,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739403760] [2022-02-24 02:45:31,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:31,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 02:45:31,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 02:45:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:45:31,237 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:31,998 INFO L93 Difference]: Finished difference Result 199 states and 202 transitions. [2022-02-24 02:45:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:45:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2022-02-24 02:45:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:32,000 INFO L225 Difference]: With dead ends: 199 [2022-02-24 02:45:32,000 INFO L226 Difference]: Without dead ends: 129 [2022-02-24 02:45:32,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:45:32,001 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 83 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:32,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 576 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-24 02:45:32,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-24 02:45:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2022-02-24 02:45:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2022-02-24 02:45:32,009 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 120 [2022-02-24 02:45:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:32,009 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2022-02-24 02:45:32,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2022-02-24 02:45:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-24 02:45:32,010 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:32,010 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:32,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 02:45:32,011 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash -638843559, now seen corresponding path program 23 times [2022-02-24 02:45:32,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:32,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960804784] [2022-02-24 02:45:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:32,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:32,014 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:32,014 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:32,592 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 02:45:32,592 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:32,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960804784] [2022-02-24 02:45:32,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1960804784] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:32,592 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:32,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:45:32,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092310836] [2022-02-24 02:45:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:32,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:45:32,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:45:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:45:32,594 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:33,444 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2022-02-24 02:45:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 02:45:33,444 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2022-02-24 02:45:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:33,447 INFO L225 Difference]: With dead ends: 207 [2022-02-24 02:45:33,447 INFO L226 Difference]: Without dead ends: 134 [2022-02-24 02:45:33,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:45:33,449 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 74 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:33,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 656 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-24 02:45:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-24 02:45:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2022-02-24 02:45:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2022-02-24 02:45:33,457 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 125 [2022-02-24 02:45:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:33,457 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2022-02-24 02:45:33,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2022-02-24 02:45:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-24 02:45:33,460 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:33,460 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:33,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 02:45:33,461 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1108647936, now seen corresponding path program 24 times [2022-02-24 02:45:33,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:33,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732034097] [2022-02-24 02:45:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:33,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:33,467 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:33,467 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:34,064 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 02:45:34,065 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:34,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732034097] [2022-02-24 02:45:34,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1732034097] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:34,065 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:34,065 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 02:45:34,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865552199] [2022-02-24 02:45:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:34,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 02:45:34,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 02:45:34,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:45:34,067 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:34,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:34,944 INFO L93 Difference]: Finished difference Result 215 states and 218 transitions. [2022-02-24 02:45:34,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 02:45:34,944 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2022-02-24 02:45:34,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:34,945 INFO L225 Difference]: With dead ends: 215 [2022-02-24 02:45:34,945 INFO L226 Difference]: Without dead ends: 139 [2022-02-24 02:45:34,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:45:34,948 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 79 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:34,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 703 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-24 02:45:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-02-24 02:45:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2022-02-24 02:45:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-02-24 02:45:34,962 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 130 [2022-02-24 02:45:34,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:34,962 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-02-24 02:45:34,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-02-24 02:45:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-02-24 02:45:34,964 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:34,964 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:34,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 02:45:34,964 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:34,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1498745739, now seen corresponding path program 25 times [2022-02-24 02:45:34,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:34,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829249547] [2022-02-24 02:45:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:34,968 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:34,968 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:35,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:45:35,584 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:35,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829249547] [2022-02-24 02:45:35,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1829249547] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:35,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:35,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 02:45:35,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102390563] [2022-02-24 02:45:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:35,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 02:45:35,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 02:45:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:45:35,586 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:36,592 INFO L93 Difference]: Finished difference Result 223 states and 226 transitions. [2022-02-24 02:45:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 02:45:36,593 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2022-02-24 02:45:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:36,593 INFO L225 Difference]: With dead ends: 223 [2022-02-24 02:45:36,594 INFO L226 Difference]: Without dead ends: 144 [2022-02-24 02:45:36,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:45:36,595 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 100 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:36,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 712 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-24 02:45:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-02-24 02:45:36,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2022-02-24 02:45:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 137 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2022-02-24 02:45:36,603 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 135 [2022-02-24 02:45:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:36,603 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2022-02-24 02:45:36,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2022-02-24 02:45:36,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-02-24 02:45:36,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:36,604 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:36,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 02:45:36,604 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1545455388, now seen corresponding path program 26 times [2022-02-24 02:45:36,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:36,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357256903] [2022-02-24 02:45:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:36,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:36,608 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:36,608 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:37,176 INFO 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 02:45:37,177 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:37,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357256903] [2022-02-24 02:45:37,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1357256903] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:37,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:37,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 02:45:37,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083613110] [2022-02-24 02:45:37,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:37,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 02:45:37,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:37,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 02:45:37,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:45:37,180 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:38,289 INFO L93 Difference]: Finished difference Result 231 states and 234 transitions. [2022-02-24 02:45:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 02:45:38,290 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 140 [2022-02-24 02:45:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:38,291 INFO L225 Difference]: With dead ends: 231 [2022-02-24 02:45:38,291 INFO L226 Difference]: Without dead ends: 149 [2022-02-24 02:45:38,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:45:38,292 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 83 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:38,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 818 Invalid, 3031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2974 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-24 02:45:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-02-24 02:45:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2022-02-24 02:45:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2022-02-24 02:45:38,300 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 140 [2022-02-24 02:45:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:38,300 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2022-02-24 02:45:38,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2022-02-24 02:45:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-02-24 02:45:38,301 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:38,302 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:38,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 02:45:38,302 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:38,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:38,302 INFO L85 PathProgramCache]: Analyzing trace with hash 223462289, now seen corresponding path program 27 times [2022-02-24 02:45:38,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:38,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425771907] [2022-02-24 02:45:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:38,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:38,306 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:38,306 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:38,978 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 02:45:38,978 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:38,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425771907] [2022-02-24 02:45:38,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1425771907] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:38,979 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:38,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 02:45:38,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308740823] [2022-02-24 02:45:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:38,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 02:45:38,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 02:45:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:45:38,980 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:40,097 INFO L93 Difference]: Finished difference Result 239 states and 242 transitions. [2022-02-24 02:45:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 02:45:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2022-02-24 02:45:40,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:40,098 INFO L225 Difference]: With dead ends: 239 [2022-02-24 02:45:40,098 INFO L226 Difference]: Without dead ends: 154 [2022-02-24 02:45:40,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2022-02-24 02:45:40,099 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 96 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 3181 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:40,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 851 Invalid, 3245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3181 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-24 02:45:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-02-24 02:45:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2022-02-24 02:45:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2022-02-24 02:45:40,107 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 145 [2022-02-24 02:45:40,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:40,107 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2022-02-24 02:45:40,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2022-02-24 02:45:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-02-24 02:45:40,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:40,108 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:40,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 02:45:40,108 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:40,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:40,109 INFO L85 PathProgramCache]: Analyzing trace with hash 857362888, now seen corresponding path program 28 times [2022-02-24 02:45:40,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:40,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642511071] [2022-02-24 02:45:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:40,112 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:40,113 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:40,764 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 02:45:40,764 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:40,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642511071] [2022-02-24 02:45:40,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1642511071] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:40,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:40,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-24 02:45:40,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530647156] [2022-02-24 02:45:40,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:40,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-24 02:45:40,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:40,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-24 02:45:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2022-02-24 02:45:40,766 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:41,882 INFO L93 Difference]: Finished difference Result 247 states and 250 transitions. [2022-02-24 02:45:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 02:45:41,882 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2022-02-24 02:45:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:41,883 INFO L225 Difference]: With dead ends: 247 [2022-02-24 02:45:41,883 INFO L226 Difference]: Without dead ends: 159 [2022-02-24 02:45:41,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 02:45:41,884 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 115 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 3387 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 3461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:41,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 871 Invalid, 3461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-24 02:45:41,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-02-24 02:45:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2022-02-24 02:45:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2022-02-24 02:45:41,892 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 150 [2022-02-24 02:45:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:41,892 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2022-02-24 02:45:41,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2022-02-24 02:45:41,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-02-24 02:45:41,893 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:41,893 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:41,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 02:45:41,894 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:41,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:41,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1571697325, now seen corresponding path program 29 times [2022-02-24 02:45:41,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:41,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076205495] [2022-02-24 02:45:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:41,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:41,898 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:41,898 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:42,549 INFO 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 02:45:42,549 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:42,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076205495] [2022-02-24 02:45:42,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2076205495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:42,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:42,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-24 02:45:42,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658308825] [2022-02-24 02:45:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:42,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-24 02:45:42,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-24 02:45:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 02:45:42,551 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:43,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:43,829 INFO L93 Difference]: Finished difference Result 255 states and 258 transitions. [2022-02-24 02:45:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 02:45:43,830 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2022-02-24 02:45:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:43,830 INFO L225 Difference]: With dead ends: 255 [2022-02-24 02:45:43,830 INFO L226 Difference]: Without dead ends: 164 [2022-02-24 02:45:43,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 02:45:43,831 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 108 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 3640 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:43,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 958 Invalid, 3711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3640 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-24 02:45:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-24 02:45:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-02-24 02:45:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 157 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-02-24 02:45:43,839 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 155 [2022-02-24 02:45:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:43,839 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-02-24 02:45:43,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-02-24 02:45:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-02-24 02:45:43,841 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:43,841 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:43,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 02:45:43,841 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:43,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1140462932, now seen corresponding path program 30 times [2022-02-24 02:45:43,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:43,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846538014] [2022-02-24 02:45:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:43,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:43,847 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:43,847 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:44,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:44,620 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 02:45:44,621 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:44,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846538014] [2022-02-24 02:45:44,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1846538014] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:44,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:44,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-24 02:45:44,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728496525] [2022-02-24 02:45:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:44,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-24 02:45:44,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-24 02:45:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 02:45:44,622 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:45,970 INFO L93 Difference]: Finished difference Result 263 states and 266 transitions. [2022-02-24 02:45:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 02:45:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 160 [2022-02-24 02:45:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:45,971 INFO L225 Difference]: With dead ends: 263 [2022-02-24 02:45:45,972 INFO L226 Difference]: Without dead ends: 169 [2022-02-24 02:45:45,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:45:45,973 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 121 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 3949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:45,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 997 Invalid, 3949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-24 02:45:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-24 02:45:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2022-02-24 02:45:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2022-02-24 02:45:45,980 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 160 [2022-02-24 02:45:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:45,981 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2022-02-24 02:45:45,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2022-02-24 02:45:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-02-24 02:45:45,981 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:45,982 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:45,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 02:45:45,982 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:45,982 INFO L85 PathProgramCache]: Analyzing trace with hash 235798985, now seen corresponding path program 31 times [2022-02-24 02:45:45,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:45,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3565993] [2022-02-24 02:45:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:45,986 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:45,986 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:46,708 INFO 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 02:45:46,708 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:46,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3565993] [2022-02-24 02:45:46,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [3565993] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:46,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:46,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-24 02:45:46,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588721736] [2022-02-24 02:45:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:46,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-24 02:45:46,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-24 02:45:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:45:46,710 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:48,167 INFO L93 Difference]: Finished difference Result 271 states and 274 transitions. [2022-02-24 02:45:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-24 02:45:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2022-02-24 02:45:48,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:48,169 INFO L225 Difference]: With dead ends: 271 [2022-02-24 02:45:48,169 INFO L226 Difference]: Without dead ends: 174 [2022-02-24 02:45:48,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 02:45:48,170 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 120 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 4209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:48,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1073 Invalid, 4209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 4131 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-24 02:45:48,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-02-24 02:45:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2022-02-24 02:45:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2022-02-24 02:45:48,178 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 165 [2022-02-24 02:45:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:48,178 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2022-02-24 02:45:48,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2022-02-24 02:45:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-02-24 02:45:48,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:48,179 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:48,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 02:45:48,180 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1701362800, now seen corresponding path program 32 times [2022-02-24 02:45:48,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:48,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433687386] [2022-02-24 02:45:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:48,184 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:48,184 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:48,936 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 02:45:48,936 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:48,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433687386] [2022-02-24 02:45:48,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433687386] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:48,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:48,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-24 02:45:48,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811810602] [2022-02-24 02:45:48,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:48,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-24 02:45:48,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-24 02:45:48,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 02:45:48,938 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:50,348 INFO L93 Difference]: Finished difference Result 279 states and 282 transitions. [2022-02-24 02:45:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 02:45:50,348 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 170 [2022-02-24 02:45:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:50,349 INFO L225 Difference]: With dead ends: 279 [2022-02-24 02:45:50,349 INFO L226 Difference]: Without dead ends: 179 [2022-02-24 02:45:50,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=1226, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 02:45:50,350 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 137 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 4372 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 4459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:50,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1106 Invalid, 4459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4372 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-24 02:45:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-02-24 02:45:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2022-02-24 02:45:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-02-24 02:45:50,357 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 170 [2022-02-24 02:45:50,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:50,357 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-02-24 02:45:50,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 35 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-02-24 02:45:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-02-24 02:45:50,358 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:50,358 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:50,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 02:45:50,359 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:50,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1463742693, now seen corresponding path program 33 times [2022-02-24 02:45:50,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:50,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344321744] [2022-02-24 02:45:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:50,363 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:50,363 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:51,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:51,178 INFO 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 02:45:51,178 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:51,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344321744] [2022-02-24 02:45:51,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [344321744] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:51,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:51,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-24 02:45:51,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797089980] [2022-02-24 02:45:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:51,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-24 02:45:51,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:51,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-24 02:45:51,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 02:45:51,180 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:52,668 INFO L93 Difference]: Finished difference Result 287 states and 290 transitions. [2022-02-24 02:45:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 02:45:52,668 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2022-02-24 02:45:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:52,669 INFO L225 Difference]: With dead ends: 287 [2022-02-24 02:45:52,669 INFO L226 Difference]: Without dead ends: 184 [2022-02-24 02:45:52,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=1297, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 02:45:52,670 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 154 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 4621 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 4621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:52,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1141 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 4621 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-24 02:45:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-24 02:45:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2022-02-24 02:45:52,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 177 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2022-02-24 02:45:52,679 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 175 [2022-02-24 02:45:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:52,679 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2022-02-24 02:45:52,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.054054054054054) internal successors, (76), 36 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2022-02-24 02:45:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-02-24 02:45:52,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:52,680 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:52,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 02:45:52,680 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1707041676, now seen corresponding path program 34 times [2022-02-24 02:45:52,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:52,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231920455] [2022-02-24 02:45:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:52,685 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:52,685 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:53,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:53,508 INFO 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 02:45:53,508 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:53,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231920455] [2022-02-24 02:45:53,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1231920455] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:53,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:53,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-24 02:45:53,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012911655] [2022-02-24 02:45:53,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:53,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-24 02:45:53,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:53,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-24 02:45:53,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 02:45:53,511 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:55,123 INFO L93 Difference]: Finished difference Result 295 states and 298 transitions. [2022-02-24 02:45:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 02:45:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 180 [2022-02-24 02:45:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:55,124 INFO L225 Difference]: With dead ends: 295 [2022-02-24 02:45:55,124 INFO L226 Difference]: Without dead ends: 189 [2022-02-24 02:45:55,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 02:45:55,125 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 111 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 4968 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 5043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 4968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:55,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 1328 Invalid, 5043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 4968 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-24 02:45:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-02-24 02:45:55,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2022-02-24 02:45:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2022-02-24 02:45:55,132 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 180 [2022-02-24 02:45:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:55,133 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2022-02-24 02:45:55,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 37 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2022-02-24 02:45:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-02-24 02:45:55,133 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:55,134 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:55,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 02:45:55,134 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:55,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash -795951103, now seen corresponding path program 35 times [2022-02-24 02:45:55,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:55,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10768580] [2022-02-24 02:45:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:55,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:55,137 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:55,138 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:56,015 INFO 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 02:45:56,015 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:56,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10768580] [2022-02-24 02:45:56,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [10768580] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:56,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:56,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-24 02:45:56,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266950438] [2022-02-24 02:45:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:56,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-24 02:45:56,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-24 02:45:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 02:45:56,018 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:57,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:45:57,667 INFO L93 Difference]: Finished difference Result 303 states and 306 transitions. [2022-02-24 02:45:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-24 02:45:57,667 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2022-02-24 02:45:57,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:45:57,668 INFO L225 Difference]: With dead ends: 303 [2022-02-24 02:45:57,668 INFO L226 Difference]: Without dead ends: 194 [2022-02-24 02:45:57,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 02:45:57,669 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 118 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 5248 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 5327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 5248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:45:57,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1392 Invalid, 5327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 5248 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-24 02:45:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-02-24 02:45:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-02-24 02:45:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 187 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2022-02-24 02:45:57,677 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 185 [2022-02-24 02:45:57,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:45:57,677 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2022-02-24 02:45:57,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.051282051282051) internal successors, (80), 38 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:45:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2022-02-24 02:45:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-02-24 02:45:57,678 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:45:57,678 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:45:57,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 02:45:57,679 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:45:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:45:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1509176664, now seen corresponding path program 36 times [2022-02-24 02:45:57,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:45:57,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164992969] [2022-02-24 02:45:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:45:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:45:57,683 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:45:57,683 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:45:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:45:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:45:58,523 INFO 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 02:45:58,523 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:45:58,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164992969] [2022-02-24 02:45:58,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [164992969] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:45:58,524 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:45:58,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-24 02:45:58,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026091110] [2022-02-24 02:45:58,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:45:58,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-24 02:45:58,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:45:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-24 02:45:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 02:45:58,526 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:00,280 INFO L93 Difference]: Finished difference Result 311 states and 314 transitions. [2022-02-24 02:46:00,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 02:46:00,280 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 190 [2022-02-24 02:46:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:00,281 INFO L225 Difference]: With dead ends: 311 [2022-02-24 02:46:00,281 INFO L226 Difference]: Without dead ends: 199 [2022-02-24 02:46:00,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=1522, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 02:46:00,282 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 181 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 5452 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 5563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 5452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:00,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1318 Invalid, 5563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 5452 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-24 02:46:00,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-02-24 02:46:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2022-02-24 02:46:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2022-02-24 02:46:00,291 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 190 [2022-02-24 02:46:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:00,292 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2022-02-24 02:46:00,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2022-02-24 02:46:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-02-24 02:46:00,293 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:00,293 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:00,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 02:46:00,293 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash 197865245, now seen corresponding path program 37 times [2022-02-24 02:46:00,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:00,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162828296] [2022-02-24 02:46:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:00,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:00,298 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:00,298 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:01,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:01,204 INFO 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 02:46:01,205 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:01,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162828296] [2022-02-24 02:46:01,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1162828296] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:01,205 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:01,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-24 02:46:01,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599786638] [2022-02-24 02:46:01,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:01,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-24 02:46:01,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:01,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-24 02:46:01,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 02:46:01,207 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:03,092 INFO L93 Difference]: Finished difference Result 319 states and 322 transitions. [2022-02-24 02:46:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-24 02:46:03,093 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2022-02-24 02:46:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:03,093 INFO L225 Difference]: With dead ends: 319 [2022-02-24 02:46:03,094 INFO L226 Difference]: Without dead ends: 204 [2022-02-24 02:46:03,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=1601, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 02:46:03,095 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 168 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 5778 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 5883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 5778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:03,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 1436 Invalid, 5883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 5778 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-24 02:46:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-02-24 02:46:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2022-02-24 02:46:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 197 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-02-24 02:46:03,104 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 195 [2022-02-24 02:46:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:03,104 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-02-24 02:46:03,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.048780487804878) internal successors, (84), 40 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-02-24 02:46:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-02-24 02:46:03,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:03,105 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:03,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 02:46:03,105 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1339797956, now seen corresponding path program 38 times [2022-02-24 02:46:03,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:03,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798022103] [2022-02-24 02:46:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:03,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:03,110 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:03,110 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:04,012 INFO 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 02:46:04,012 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:04,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798022103] [2022-02-24 02:46:04,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1798022103] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:04,012 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:04,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-24 02:46:04,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657839907] [2022-02-24 02:46:04,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:04,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-24 02:46:04,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-24 02:46:04,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 02:46:04,014 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:05,919 INFO L93 Difference]: Finished difference Result 327 states and 330 transitions. [2022-02-24 02:46:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 02:46:05,923 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 200 [2022-02-24 02:46:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:05,924 INFO L225 Difference]: With dead ends: 327 [2022-02-24 02:46:05,924 INFO L226 Difference]: Without dead ends: 209 [2022-02-24 02:46:05,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=1682, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:46:05,925 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 155 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 6112 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 6211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 6112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:05,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1556 Invalid, 6211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 6112 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-24 02:46:05,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-02-24 02:46:05,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2022-02-24 02:46:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.00990099009901) internal successors, (204), 202 states have internal predecessors, (204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2022-02-24 02:46:05,931 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 200 [2022-02-24 02:46:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:05,931 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2022-02-24 02:46:05,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2022-02-24 02:46:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-02-24 02:46:05,932 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:05,932 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:05,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 02:46:05,932 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:05,933 INFO L85 PathProgramCache]: Analyzing trace with hash 826408505, now seen corresponding path program 39 times [2022-02-24 02:46:05,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:05,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388796215] [2022-02-24 02:46:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:05,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:05,936 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:05,936 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:06,948 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 02:46:06,949 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:06,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388796215] [2022-02-24 02:46:06,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1388796215] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:06,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:06,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-24 02:46:06,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073473537] [2022-02-24 02:46:06,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:06,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-24 02:46:06,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:06,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-24 02:46:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:46:06,952 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 42 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:08,952 INFO L93 Difference]: Finished difference Result 335 states and 338 transitions. [2022-02-24 02:46:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-24 02:46:08,953 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 42 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2022-02-24 02:46:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:08,954 INFO L225 Difference]: With dead ends: 335 [2022-02-24 02:46:08,954 INFO L226 Difference]: Without dead ends: 214 [2022-02-24 02:46:08,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1765, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 02:46:08,955 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 144 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 6451 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 6545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 6451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:08,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1673 Invalid, 6545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 6451 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-24 02:46:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-02-24 02:46:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2022-02-24 02:46:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 207 states have internal predecessors, (209), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2022-02-24 02:46:08,964 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 205 [2022-02-24 02:46:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:08,964 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2022-02-24 02:46:08,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 42 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2022-02-24 02:46:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-02-24 02:46:08,965 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:08,965 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:08,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-24 02:46:08,965 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash 247670560, now seen corresponding path program 40 times [2022-02-24 02:46:08,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:08,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940553477] [2022-02-24 02:46:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:08,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:08,970 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:08,970 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:10,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:46:10,033 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:10,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940553477] [2022-02-24 02:46:10,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1940553477] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:10,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:10,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-24 02:46:10,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573682983] [2022-02-24 02:46:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:10,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-24 02:46:10,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-24 02:46:10,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 02:46:10,035 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:12,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:12,189 INFO L93 Difference]: Finished difference Result 343 states and 346 transitions. [2022-02-24 02:46:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-24 02:46:12,189 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 210 [2022-02-24 02:46:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:12,190 INFO L225 Difference]: With dead ends: 343 [2022-02-24 02:46:12,190 INFO L226 Difference]: Without dead ends: 219 [2022-02-24 02:46:12,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=1850, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 02:46:12,191 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 171 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 6741 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 6849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 6741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:12,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1697 Invalid, 6849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 6741 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-24 02:46:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-02-24 02:46:12,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2022-02-24 02:46:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.009433962264151) internal successors, (214), 212 states have internal predecessors, (214), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2022-02-24 02:46:12,209 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 210 [2022-02-24 02:46:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:12,210 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2022-02-24 02:46:12,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 43 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2022-02-24 02:46:12,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-02-24 02:46:12,211 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:12,211 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:12,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-24 02:46:12,211 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1681855147, now seen corresponding path program 41 times [2022-02-24 02:46:12,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:12,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939279917] [2022-02-24 02:46:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:12,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:12,217 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:12,217 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:13,204 INFO 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 02:46:13,204 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:13,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939279917] [2022-02-24 02:46:13,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1939279917] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:13,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:13,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-24 02:46:13,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653391617] [2022-02-24 02:46:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:13,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-24 02:46:13,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:13,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-24 02:46:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 02:46:13,206 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:15,408 INFO L93 Difference]: Finished difference Result 351 states and 354 transitions. [2022-02-24 02:46:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-24 02:46:15,409 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2022-02-24 02:46:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:15,410 INFO L225 Difference]: With dead ends: 351 [2022-02-24 02:46:15,410 INFO L226 Difference]: Without dead ends: 224 [2022-02-24 02:46:15,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 02:46:15,411 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 174 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 7075 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 7185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 7075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:15,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1783 Invalid, 7185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 7075 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-24 02:46:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-02-24 02:46:15,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-02-24 02:46:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 217 states have (on average 1.0092165898617511) internal successors, (219), 217 states have internal predecessors, (219), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2022-02-24 02:46:15,421 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 215 [2022-02-24 02:46:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:15,421 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2022-02-24 02:46:15,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 44 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2022-02-24 02:46:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-02-24 02:46:15,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:15,422 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:15,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-24 02:46:15,422 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash -415039484, now seen corresponding path program 42 times [2022-02-24 02:46:15,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:15,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534876803] [2022-02-24 02:46:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:15,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:15,427 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:15,428 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:16,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:16,592 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 02:46:16,592 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:16,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534876803] [2022-02-24 02:46:16,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1534876803] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:16,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:16,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-24 02:46:16,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113341942] [2022-02-24 02:46:16,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:16,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-24 02:46:16,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:16,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-24 02:46:16,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 02:46:16,595 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand has 46 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 45 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:18,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:18,968 INFO L93 Difference]: Finished difference Result 359 states and 362 transitions. [2022-02-24 02:46:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-24 02:46:18,968 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 45 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 220 [2022-02-24 02:46:18,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:18,969 INFO L225 Difference]: With dead ends: 359 [2022-02-24 02:46:18,969 INFO L226 Difference]: Without dead ends: 229 [2022-02-24 02:46:18,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=2026, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 02:46:18,970 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 177 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 7417 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 7529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 7417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:18,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1871 Invalid, 7529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 7417 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-24 02:46:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-02-24 02:46:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2022-02-24 02:46:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2022-02-24 02:46:18,978 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 220 [2022-02-24 02:46:18,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:18,978 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2022-02-24 02:46:18,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 45 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2022-02-24 02:46:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-02-24 02:46:18,979 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:18,979 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:18,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-24 02:46:18,979 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:18,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1955970161, now seen corresponding path program 43 times [2022-02-24 02:46:18,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:18,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313746862] [2022-02-24 02:46:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:18,983 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:18,983 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:20,090 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 02:46:20,091 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:20,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313746862] [2022-02-24 02:46:20,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1313746862] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:20,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:20,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-24 02:46:20,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835649000] [2022-02-24 02:46:20,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:20,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-24 02:46:20,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:20,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-24 02:46:20,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 02:46:20,092 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand has 47 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 46 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:22,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:22,502 INFO L93 Difference]: Finished difference Result 367 states and 370 transitions. [2022-02-24 02:46:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-24 02:46:22,503 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 46 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2022-02-24 02:46:22,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:22,504 INFO L225 Difference]: With dead ends: 367 [2022-02-24 02:46:22,504 INFO L226 Difference]: Without dead ends: 234 [2022-02-24 02:46:22,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=2117, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 02:46:22,504 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 184 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 7761 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 7877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 7761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:22,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1951 Invalid, 7877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 7761 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-24 02:46:22,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-24 02:46:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2022-02-24 02:46:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 227 states have internal predecessors, (229), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2022-02-24 02:46:22,514 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 225 [2022-02-24 02:46:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:22,514 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2022-02-24 02:46:22,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 46 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2022-02-24 02:46:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-02-24 02:46:22,516 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:22,516 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:22,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-24 02:46:22,516 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash 244717800, now seen corresponding path program 44 times [2022-02-24 02:46:22,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:22,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560510873] [2022-02-24 02:46:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:22,521 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:22,521 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:23,629 INFO 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 02:46:23,629 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:23,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560510873] [2022-02-24 02:46:23,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1560510873] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:23,629 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:23,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-24 02:46:23,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882670431] [2022-02-24 02:46:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:23,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-24 02:46:23,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-24 02:46:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 02:46:23,631 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:26,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:26,149 INFO L93 Difference]: Finished difference Result 375 states and 378 transitions. [2022-02-24 02:46:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-24 02:46:26,150 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 230 [2022-02-24 02:46:26,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:26,150 INFO L225 Difference]: With dead ends: 375 [2022-02-24 02:46:26,150 INFO L226 Difference]: Without dead ends: 239 [2022-02-24 02:46:26,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=2210, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 02:46:26,151 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 189 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 8116 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 8235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 8116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:26,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 2038 Invalid, 8235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 8116 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-24 02:46:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-02-24 02:46:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2022-02-24 02:46:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 232 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2022-02-24 02:46:26,160 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 230 [2022-02-24 02:46:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:26,160 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2022-02-24 02:46:26,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 47 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2022-02-24 02:46:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-02-24 02:46:26,161 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:26,162 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:26,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-24 02:46:26,162 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1334717325, now seen corresponding path program 45 times [2022-02-24 02:46:26,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:26,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950825200] [2022-02-24 02:46:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:26,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:26,178 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:26,179 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:27,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:27,346 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 02:46:27,347 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:27,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950825200] [2022-02-24 02:46:27,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1950825200] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:27,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:27,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-24 02:46:27,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255090624] [2022-02-24 02:46:27,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:27,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-24 02:46:27,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-24 02:46:27,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2212, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 02:46:27,348 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:29,956 INFO L93 Difference]: Finished difference Result 383 states and 386 transitions. [2022-02-24 02:46:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-24 02:46:29,957 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 235 [2022-02-24 02:46:29,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:29,957 INFO L225 Difference]: With dead ends: 383 [2022-02-24 02:46:29,957 INFO L226 Difference]: Without dead ends: 244 [2022-02-24 02:46:29,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=2305, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 02:46:29,958 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 220 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 8440 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 8575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 8440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:29,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 2062 Invalid, 8575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 8440 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-24 02:46:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-02-24 02:46:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2022-02-24 02:46:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 237 states have internal predecessors, (239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2022-02-24 02:46:29,968 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 235 [2022-02-24 02:46:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:29,968 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2022-02-24 02:46:29,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 48 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2022-02-24 02:46:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-02-24 02:46:29,969 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:29,969 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:29,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-24 02:46:29,970 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:29,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:29,970 INFO L85 PathProgramCache]: Analyzing trace with hash 556708300, now seen corresponding path program 46 times [2022-02-24 02:46:29,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:29,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298155615] [2022-02-24 02:46:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:29,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:29,974 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:29,974 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:31,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:31,114 INFO 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 02:46:31,114 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:31,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298155615] [2022-02-24 02:46:31,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [298155615] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:31,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:31,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-24 02:46:31,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819399803] [2022-02-24 02:46:31,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:31,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-24 02:46:31,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:31,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-24 02:46:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2307, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 02:46:31,116 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:33,874 INFO L93 Difference]: Finished difference Result 391 states and 394 transitions. [2022-02-24 02:46:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-24 02:46:33,875 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 240 [2022-02-24 02:46:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:33,876 INFO L225 Difference]: With dead ends: 391 [2022-02-24 02:46:33,876 INFO L226 Difference]: Without dead ends: 249 [2022-02-24 02:46:33,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=2402, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 02:46:33,876 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 197 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 8853 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 8977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 8853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:33,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 2223 Invalid, 8977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 8853 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-24 02:46:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-24 02:46:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 246. [2022-02-24 02:46:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 1.0082644628099173) internal successors, (244), 242 states have internal predecessors, (244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2022-02-24 02:46:33,886 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 240 [2022-02-24 02:46:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:33,886 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2022-02-24 02:46:33,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2022-02-24 02:46:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-02-24 02:46:33,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:33,887 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:33,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-24 02:46:33,887 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:33,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash -956826967, now seen corresponding path program 47 times [2022-02-24 02:46:33,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:33,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431435815] [2022-02-24 02:46:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:33,891 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:33,891 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:35,095 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 02:46:35,095 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:35,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431435815] [2022-02-24 02:46:35,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1431435815] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:35,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:35,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-24 02:46:35,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014465709] [2022-02-24 02:46:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:35,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-24 02:46:35,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-24 02:46:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 02:46:35,097 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 50 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:37,932 INFO L93 Difference]: Finished difference Result 399 states and 402 transitions. [2022-02-24 02:46:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-24 02:46:37,932 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 50 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2022-02-24 02:46:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:37,933 INFO L225 Difference]: With dead ends: 399 [2022-02-24 02:46:37,933 INFO L226 Difference]: Without dead ends: 254 [2022-02-24 02:46:37,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=2501, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 02:46:37,934 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 238 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 9178 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 9323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 9178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:37,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 2226 Invalid, 9323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 9178 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-24 02:46:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-02-24 02:46:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251. [2022-02-24 02:46:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 247 states have (on average 1.008097165991903) internal successors, (249), 247 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2022-02-24 02:46:37,943 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 245 [2022-02-24 02:46:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:37,944 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2022-02-24 02:46:37,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 50 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2022-02-24 02:46:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-02-24 02:46:37,945 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:37,945 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:37,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-24 02:46:37,945 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:37,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash -419493200, now seen corresponding path program 48 times [2022-02-24 02:46:37,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:37,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796541535] [2022-02-24 02:46:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:37,950 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:37,950 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:39,188 INFO 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 02:46:39,188 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:39,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796541535] [2022-02-24 02:46:39,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1796541535] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:39,188 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:39,188 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-24 02:46:39,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992687059] [2022-02-24 02:46:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:39,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-24 02:46:39,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-24 02:46:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 02:46:39,190 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:42,129 INFO L93 Difference]: Finished difference Result 407 states and 410 transitions. [2022-02-24 02:46:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-24 02:46:42,130 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 250 [2022-02-24 02:46:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:42,130 INFO L225 Difference]: With dead ends: 407 [2022-02-24 02:46:42,130 INFO L226 Difference]: Without dead ends: 259 [2022-02-24 02:46:42,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=2602, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 02:46:42,131 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 225 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 9592 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 9731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 9592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:42,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 2366 Invalid, 9731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 9592 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-24 02:46:42,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-02-24 02:46:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 256. [2022-02-24 02:46:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.007936507936508) internal successors, (254), 252 states have internal predecessors, (254), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2022-02-24 02:46:42,140 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 250 [2022-02-24 02:46:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:42,141 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2022-02-24 02:46:42,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 51 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:42,141 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2022-02-24 02:46:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-02-24 02:46:42,142 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:42,142 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:42,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-24 02:46:42,142 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:42,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:42,142 INFO L85 PathProgramCache]: Analyzing trace with hash 396421573, now seen corresponding path program 49 times [2022-02-24 02:46:42,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:42,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008885488] [2022-02-24 02:46:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:42,146 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:42,146 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:46:43,904 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:43,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008885488] [2022-02-24 02:46:43,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2008885488] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:43,905 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:43,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-24 02:46:43,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41016833] [2022-02-24 02:46:43,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:43,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-24 02:46:43,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-24 02:46:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 02:46:43,906 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 53 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:46,975 INFO L93 Difference]: Finished difference Result 415 states and 418 transitions. [2022-02-24 02:46:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-24 02:46:46,976 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 255 [2022-02-24 02:46:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:46,977 INFO L225 Difference]: With dead ends: 415 [2022-02-24 02:46:46,977 INFO L226 Difference]: Without dead ends: 264 [2022-02-24 02:46:46,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=2705, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 02:46:46,978 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 178 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 10065 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 10181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 10065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:46,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 2593 Invalid, 10181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 10065 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-24 02:46:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-02-24 02:46:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 261. [2022-02-24 02:46:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 257 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:46,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2022-02-24 02:46:46,988 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 255 [2022-02-24 02:46:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:46,988 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2022-02-24 02:46:46,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2022-02-24 02:46:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-02-24 02:46:46,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:46,990 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:46,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-24 02:46:46,990 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1216781420, now seen corresponding path program 50 times [2022-02-24 02:46:46,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:46,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395660159] [2022-02-24 02:46:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:46,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:46,995 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:46,995 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:48,768 INFO 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 02:46:48,769 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:48,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395660159] [2022-02-24 02:46:48,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [395660159] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:48,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:48,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-24 02:46:48,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879302569] [2022-02-24 02:46:48,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:48,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-24 02:46:48,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-24 02:46:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 02:46:48,771 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand has 54 states, 54 states have (on average 2.037037037037037) internal successors, (110), 53 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:51,956 INFO L93 Difference]: Finished difference Result 423 states and 426 transitions. [2022-02-24 02:46:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-24 02:46:51,957 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.037037037037037) internal successors, (110), 53 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 260 [2022-02-24 02:46:51,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:51,958 INFO L225 Difference]: With dead ends: 423 [2022-02-24 02:46:51,958 INFO L226 Difference]: Without dead ends: 269 [2022-02-24 02:46:51,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=2810, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 02:46:51,959 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 229 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 10399 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 10541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 10399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:51,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 2577 Invalid, 10541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 10399 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-24 02:46:51,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-02-24 02:46:51,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2022-02-24 02:46:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 262 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2022-02-24 02:46:51,969 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 260 [2022-02-24 02:46:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:51,969 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 267 transitions. [2022-02-24 02:46:51,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.037037037037037) internal successors, (110), 53 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 267 transitions. [2022-02-24 02:46:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-02-24 02:46:51,971 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:51,971 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:51,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-24 02:46:51,971 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1126778655, now seen corresponding path program 51 times [2022-02-24 02:46:51,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:51,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088091003] [2022-02-24 02:46:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:51,976 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:51,976 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:53,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:53,776 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 02:46:53,776 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:53,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088091003] [2022-02-24 02:46:53,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1088091003] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:53,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:53,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-24 02:46:53,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951475266] [2022-02-24 02:46:53,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:53,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-24 02:46:53,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:53,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-24 02:46:53,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2812, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 02:46:53,778 INFO L87 Difference]: Start difference. First operand 266 states and 267 transitions. Second operand has 55 states, 55 states have (on average 2.036363636363636) internal successors, (112), 54 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:46:57,144 INFO L93 Difference]: Finished difference Result 431 states and 434 transitions. [2022-02-24 02:46:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-24 02:46:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.036363636363636) internal successors, (112), 54 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 265 [2022-02-24 02:46:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:46:57,145 INFO L225 Difference]: With dead ends: 431 [2022-02-24 02:46:57,145 INFO L226 Difference]: Without dead ends: 274 [2022-02-24 02:46:57,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=163, Invalid=2917, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 02:46:57,147 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 236 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 10807 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 10953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 10807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:46:57,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 2673 Invalid, 10953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 10807 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-24 02:46:57,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-02-24 02:46:57,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2022-02-24 02:46:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 267 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:57,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2022-02-24 02:46:57,158 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 265 [2022-02-24 02:46:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:46:57,158 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2022-02-24 02:46:57,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.036363636363636) internal successors, (112), 54 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:46:57,159 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2022-02-24 02:46:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-02-24 02:46:57,160 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:46:57,160 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:46:57,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-24 02:46:57,160 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:46:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:46:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash -577766280, now seen corresponding path program 52 times [2022-02-24 02:46:57,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:46:57,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802369072] [2022-02-24 02:46:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:46:57,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:46:57,168 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:46:57,168 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:46:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:46:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:46:59,047 INFO 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 02:46:59,047 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:46:59,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802369072] [2022-02-24 02:46:59,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1802369072] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:46:59,047 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:46:59,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-24 02:46:59,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384873161] [2022-02-24 02:46:59,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:46:59,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-24 02:46:59,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:46:59,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-24 02:46:59,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2919, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 02:46:59,049 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:02,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:02,528 INFO L93 Difference]: Finished difference Result 439 states and 442 transitions. [2022-02-24 02:47:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-24 02:47:02,529 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 270 [2022-02-24 02:47:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:02,530 INFO L225 Difference]: With dead ends: 439 [2022-02-24 02:47:02,530 INFO L226 Difference]: Without dead ends: 279 [2022-02-24 02:47:02,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=3026, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 02:47:02,531 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 227 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 11247 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 11389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 11247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:02,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 2811 Invalid, 11389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 11247 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-24 02:47:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-02-24 02:47:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2022-02-24 02:47:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 272 states have internal predecessors, (274), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2022-02-24 02:47:02,541 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 270 [2022-02-24 02:47:02,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:02,541 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2022-02-24 02:47:02,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0357142857142856) internal successors, (114), 55 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2022-02-24 02:47:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-02-24 02:47:02,542 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:02,542 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:02,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-24 02:47:02,543 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:02,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:02,543 INFO L85 PathProgramCache]: Analyzing trace with hash 208087037, now seen corresponding path program 53 times [2022-02-24 02:47:02,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:02,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262058702] [2022-02-24 02:47:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:02,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:02,547 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:02,548 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:47:04,400 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:04,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262058702] [2022-02-24 02:47:04,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1262058702] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:04,400 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:04,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-24 02:47:04,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522020177] [2022-02-24 02:47:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:04,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-24 02:47:04,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-24 02:47:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3028, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 02:47:04,402 INFO L87 Difference]: Start difference. First operand 276 states and 277 transitions. Second operand has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 56 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:08,015 INFO L93 Difference]: Finished difference Result 447 states and 450 transitions. [2022-02-24 02:47:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-24 02:47:08,015 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 56 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 275 [2022-02-24 02:47:08,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:08,016 INFO L225 Difference]: With dead ends: 447 [2022-02-24 02:47:08,016 INFO L226 Difference]: Without dead ends: 284 [2022-02-24 02:47:08,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=169, Invalid=3137, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 02:47:08,017 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 172 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 11764 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 11879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 11764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:08,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 3066 Invalid, 11879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 11764 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-02-24 02:47:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-02-24 02:47:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 281. [2022-02-24 02:47:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 277 states have (on average 1.0072202166064983) internal successors, (279), 277 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2022-02-24 02:47:08,028 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 275 [2022-02-24 02:47:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:08,029 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2022-02-24 02:47:08,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 56 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2022-02-24 02:47:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-02-24 02:47:08,030 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:08,030 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:08,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-24 02:47:08,031 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash -72018596, now seen corresponding path program 54 times [2022-02-24 02:47:08,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:08,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743958880] [2022-02-24 02:47:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:08,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:08,037 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:08,037 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:47:09,921 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:09,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743958880] [2022-02-24 02:47:09,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [743958880] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:09,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:09,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-24 02:47:09,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546797293] [2022-02-24 02:47:09,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:09,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-24 02:47:09,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:09,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-24 02:47:09,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 02:47:09,922 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:13,607 INFO L93 Difference]: Finished difference Result 455 states and 458 transitions. [2022-02-24 02:47:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-24 02:47:13,607 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 280 [2022-02-24 02:47:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:13,608 INFO L225 Difference]: With dead ends: 455 [2022-02-24 02:47:13,608 INFO L226 Difference]: Without dead ends: 289 [2022-02-24 02:47:13,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=3250, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 02:47:13,609 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 251 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 12088 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 12243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 12088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:13,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2988 Invalid, 12243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 12088 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-02-24 02:47:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-02-24 02:47:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2022-02-24 02:47:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 1.0070921985815602) internal successors, (284), 282 states have internal predecessors, (284), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 287 transitions. [2022-02-24 02:47:13,621 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 287 transitions. Word has length 280 [2022-02-24 02:47:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:13,621 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 287 transitions. [2022-02-24 02:47:13,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 287 transitions. [2022-02-24 02:47:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-02-24 02:47:13,623 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:13,623 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:13,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-24 02:47:13,623 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash -761268455, now seen corresponding path program 55 times [2022-02-24 02:47:13,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:13,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447085189] [2022-02-24 02:47:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:13,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:13,628 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:13,628 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:15,636 INFO 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 02:47:15,636 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:15,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447085189] [2022-02-24 02:47:15,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1447085189] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:15,636 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:15,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-24 02:47:15,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106318825] [2022-02-24 02:47:15,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:15,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-24 02:47:15,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:15,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-24 02:47:15,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 02:47:15,638 INFO L87 Difference]: Start difference. First operand 286 states and 287 transitions. Second operand has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 58 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:19,460 INFO L93 Difference]: Finished difference Result 463 states and 466 transitions. [2022-02-24 02:47:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-24 02:47:19,460 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 58 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2022-02-24 02:47:19,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:19,461 INFO L225 Difference]: With dead ends: 463 [2022-02-24 02:47:19,461 INFO L226 Difference]: Without dead ends: 294 [2022-02-24 02:47:19,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=175, Invalid=3365, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 02:47:19,462 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 278 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 12498 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 12667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 12498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:19,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 3042 Invalid, 12667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 12498 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-02-24 02:47:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-02-24 02:47:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2022-02-24 02:47:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 287 states have internal predecessors, (289), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2022-02-24 02:47:19,473 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 285 [2022-02-24 02:47:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:19,473 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2022-02-24 02:47:19,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 58 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2022-02-24 02:47:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-02-24 02:47:19,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:19,475 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:19,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-24 02:47:19,475 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1876618816, now seen corresponding path program 56 times [2022-02-24 02:47:19,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:19,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288784678] [2022-02-24 02:47:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:19,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:19,480 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:19,480 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:21,559 INFO 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 02:47:21,559 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:21,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288784678] [2022-02-24 02:47:21,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [288784678] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:21,559 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:21,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-24 02:47:21,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004296584] [2022-02-24 02:47:21,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:21,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-24 02:47:21,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:21,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-24 02:47:21,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 02:47:21,560 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:25,540 INFO L93 Difference]: Finished difference Result 471 states and 474 transitions. [2022-02-24 02:47:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-24 02:47:25,541 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 290 [2022-02-24 02:47:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:25,542 INFO L225 Difference]: With dead ends: 471 [2022-02-24 02:47:25,542 INFO L226 Difference]: Without dead ends: 299 [2022-02-24 02:47:25,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=178, Invalid=3482, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 02:47:25,542 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 235 mSDsluCounter, 3208 mSDsCounter, 0 mSdLazyCounter, 13021 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 13169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 13021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:25,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 3273 Invalid, 13169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 13021 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-02-24 02:47:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-02-24 02:47:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2022-02-24 02:47:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 292 states have internal predecessors, (294), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2022-02-24 02:47:25,554 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 290 [2022-02-24 02:47:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:25,554 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2022-02-24 02:47:25,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 59 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2022-02-24 02:47:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-02-24 02:47:25,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:25,556 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:25,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-24 02:47:25,556 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash -296819147, now seen corresponding path program 57 times [2022-02-24 02:47:25,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:25,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962299923] [2022-02-24 02:47:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:25,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:25,561 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:25,562 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:27,637 INFO 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 02:47:27,637 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:27,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962299923] [2022-02-24 02:47:27,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [962299923] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:27,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:27,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-24 02:47:27,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595282020] [2022-02-24 02:47:27,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:27,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-24 02:47:27,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-24 02:47:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 02:47:27,639 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 61 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 60 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:31,804 INFO L93 Difference]: Finished difference Result 479 states and 482 transitions. [2022-02-24 02:47:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-24 02:47:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 60 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 295 [2022-02-24 02:47:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:31,806 INFO L225 Difference]: With dead ends: 479 [2022-02-24 02:47:31,806 INFO L226 Difference]: Without dead ends: 304 [2022-02-24 02:47:31,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=181, Invalid=3601, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 02:47:31,807 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 260 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 13450 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 13611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 13450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:31,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 3336 Invalid, 13611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 13450 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-02-24 02:47:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-02-24 02:47:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-02-24 02:47:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 297 states have internal predecessors, (299), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2022-02-24 02:47:31,816 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 295 [2022-02-24 02:47:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:31,816 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2022-02-24 02:47:31,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 60 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2022-02-24 02:47:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-02-24 02:47:31,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:31,818 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:31,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-24 02:47:31,818 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:31,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:31,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1217149148, now seen corresponding path program 58 times [2022-02-24 02:47:31,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:31,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332149922] [2022-02-24 02:47:31,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:31,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:31,824 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:31,824 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:47:33,941 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:33,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332149922] [2022-02-24 02:47:33,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [332149922] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:33,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:33,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-24 02:47:33,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558766095] [2022-02-24 02:47:33,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:33,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-24 02:47:33,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:33,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-24 02:47:33,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 02:47:33,943 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand has 62 states, 62 states have (on average 2.032258064516129) internal successors, (126), 61 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:38,221 INFO L93 Difference]: Finished difference Result 487 states and 490 transitions. [2022-02-24 02:47:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-24 02:47:38,221 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.032258064516129) internal successors, (126), 61 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 300 [2022-02-24 02:47:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:38,222 INFO L225 Difference]: With dead ends: 487 [2022-02-24 02:47:38,222 INFO L226 Difference]: Without dead ends: 309 [2022-02-24 02:47:38,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=184, Invalid=3722, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 02:47:38,223 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 223 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 13980 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 14123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 13980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:38,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 3556 Invalid, 14123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 13980 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-02-24 02:47:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-02-24 02:47:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 306. [2022-02-24 02:47:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 302 states have (on average 1.0066225165562914) internal successors, (304), 302 states have internal predecessors, (304), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 307 transitions. [2022-02-24 02:47:38,235 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 307 transitions. Word has length 300 [2022-02-24 02:47:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:38,235 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 307 transitions. [2022-02-24 02:47:38,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.032258064516129) internal successors, (126), 61 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 307 transitions. [2022-02-24 02:47:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-02-24 02:47:38,237 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:38,237 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:38,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-24 02:47:38,237 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash -322849455, now seen corresponding path program 59 times [2022-02-24 02:47:38,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:38,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727219843] [2022-02-24 02:47:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:38,242 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:38,242 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:40,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:40,363 INFO 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 02:47:40,363 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:40,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727219843] [2022-02-24 02:47:40,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [727219843] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:40,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:40,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-24 02:47:40,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321750297] [2022-02-24 02:47:40,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:40,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-24 02:47:40,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:40,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-24 02:47:40,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 02:47:40,364 INFO L87 Difference]: Start difference. First operand 306 states and 307 transitions. Second operand has 63 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 62 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:44,763 INFO L93 Difference]: Finished difference Result 495 states and 498 transitions. [2022-02-24 02:47:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-24 02:47:44,764 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 62 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 305 [2022-02-24 02:47:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:44,765 INFO L225 Difference]: With dead ends: 495 [2022-02-24 02:47:44,765 INFO L226 Difference]: Without dead ends: 314 [2022-02-24 02:47:44,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=3845, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 02:47:44,766 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 256 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 14413 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 14573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 14413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:44,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 3603 Invalid, 14573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 14413 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-02-24 02:47:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-02-24 02:47:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2022-02-24 02:47:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 307 states have (on average 1.006514657980456) internal successors, (309), 307 states have internal predecessors, (309), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2022-02-24 02:47:44,777 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 305 [2022-02-24 02:47:44,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:44,777 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2022-02-24 02:47:44,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 62 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2022-02-24 02:47:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-02-24 02:47:44,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:44,779 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:44,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-24 02:47:44,779 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:44,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash -747511800, now seen corresponding path program 60 times [2022-02-24 02:47:44,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:44,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598490190] [2022-02-24 02:47:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:44,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:44,784 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:44,784 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:46,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:46,934 INFO 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 02:47:46,934 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:46,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598490190] [2022-02-24 02:47:46,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [598490190] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:46,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:46,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-24 02:47:46,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310375778] [2022-02-24 02:47:46,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:46,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-24 02:47:46,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:46,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-24 02:47:46,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3847, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 02:47:46,935 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:51,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:51,476 INFO L93 Difference]: Finished difference Result 503 states and 506 transitions. [2022-02-24 02:47:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-24 02:47:51,477 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 310 [2022-02-24 02:47:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:51,478 INFO L225 Difference]: With dead ends: 503 [2022-02-24 02:47:51,478 INFO L226 Difference]: Without dead ends: 319 [2022-02-24 02:47:51,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=190, Invalid=3970, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 02:47:51,479 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 269 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 14884 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 15051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 14884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:51,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 3702 Invalid, 15051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 14884 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-24 02:47:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-02-24 02:47:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2022-02-24 02:47:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 312 states have (on average 1.0064102564102564) internal successors, (314), 312 states have internal predecessors, (314), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 317 transitions. [2022-02-24 02:47:51,488 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 317 transitions. Word has length 310 [2022-02-24 02:47:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:51,488 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 317 transitions. [2022-02-24 02:47:51,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.03125) internal successors, (130), 63 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 317 transitions. [2022-02-24 02:47:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-02-24 02:47:51,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:51,490 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:51,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-24 02:47:51,490 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:51,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1513741203, now seen corresponding path program 61 times [2022-02-24 02:47:51,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:51,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715804269] [2022-02-24 02:47:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:51,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:51,495 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:51,495 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:47:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:47:53,708 INFO 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 02:47:53,708 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:47:53,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715804269] [2022-02-24 02:47:53,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [715804269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:47:53,708 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:47:53,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-24 02:47:53,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733629324] [2022-02-24 02:47:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:47:53,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-24 02:47:53,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:47:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-24 02:47:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 02:47:53,710 INFO L87 Difference]: Start difference. First operand 316 states and 317 transitions. Second operand has 65 states, 65 states have (on average 2.0307692307692307) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:47:58,430 INFO L93 Difference]: Finished difference Result 511 states and 514 transitions. [2022-02-24 02:47:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-24 02:47:58,430 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0307692307692307) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 315 [2022-02-24 02:47:58,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:47:58,431 INFO L225 Difference]: With dead ends: 511 [2022-02-24 02:47:58,431 INFO L226 Difference]: Without dead ends: 324 [2022-02-24 02:47:58,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=4097, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 02:47:58,432 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 190 mSDsluCounter, 3963 mSDsCounter, 0 mSdLazyCounter, 15501 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 15629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 15501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:47:58,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 4033 Invalid, 15629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 15501 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-24 02:47:58,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-02-24 02:47:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2022-02-24 02:47:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 317 states have (on average 1.0063091482649842) internal successors, (319), 317 states have internal predecessors, (319), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2022-02-24 02:47:58,443 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 315 [2022-02-24 02:47:58,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:47:58,443 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2022-02-24 02:47:58,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0307692307692307) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:47:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2022-02-24 02:47:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-02-24 02:47:58,445 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:47:58,445 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:47:58,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-24 02:47:58,446 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:47:58,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:47:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1404602132, now seen corresponding path program 62 times [2022-02-24 02:47:58,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:47:58,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844127886] [2022-02-24 02:47:58,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:47:58,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:47:58,451 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:47:58,451 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:47:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:48:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:00,725 INFO 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 02:48:00,725 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:48:00,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844127886] [2022-02-24 02:48:00,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1844127886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:48:00,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:48:00,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-24 02:48:00,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941092422] [2022-02-24 02:48:00,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:48:00,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-24 02:48:00,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:48:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-24 02:48:00,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4099, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 02:48:00,727 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 65 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:48:05,529 INFO L93 Difference]: Finished difference Result 519 states and 522 transitions. [2022-02-24 02:48:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-24 02:48:05,530 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 65 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 320 [2022-02-24 02:48:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:48:05,531 INFO L225 Difference]: With dead ends: 519 [2022-02-24 02:48:05,531 INFO L226 Difference]: Without dead ends: 329 [2022-02-24 02:48:05,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=196, Invalid=4226, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 02:48:05,532 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 297 mSDsluCounter, 3830 mSDsCounter, 0 mSdLazyCounter, 15847 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 16029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 15847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:48:05,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 3901 Invalid, 16029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 15847 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-02-24 02:48:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-02-24 02:48:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2022-02-24 02:48:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 322 states have (on average 1.0062111801242235) internal successors, (324), 322 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 327 transitions. [2022-02-24 02:48:05,543 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 327 transitions. Word has length 320 [2022-02-24 02:48:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:48:05,543 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 327 transitions. [2022-02-24 02:48:05,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 65 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 327 transitions. [2022-02-24 02:48:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-02-24 02:48:05,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:48:05,545 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:48:05,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-24 02:48:05,545 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:48:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:48:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash -676727927, now seen corresponding path program 63 times [2022-02-24 02:48:05,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:48:05,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751730348] [2022-02-24 02:48:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:48:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:48:05,551 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:48:05,551 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:48:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:07,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:48:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:07,852 INFO 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 02:48:07,852 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:48:07,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751730348] [2022-02-24 02:48:07,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [751730348] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:48:07,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:48:07,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-24 02:48:07,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449231035] [2022-02-24 02:48:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:48:07,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-24 02:48:07,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:48:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-24 02:48:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=4228, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 02:48:07,854 INFO L87 Difference]: Start difference. First operand 326 states and 327 transitions. Second operand has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:48:12,857 INFO L93 Difference]: Finished difference Result 527 states and 530 transitions. [2022-02-24 02:48:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-24 02:48:12,858 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 325 [2022-02-24 02:48:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:48:12,859 INFO L225 Difference]: With dead ends: 527 [2022-02-24 02:48:12,859 INFO L226 Difference]: Without dead ends: 334 [2022-02-24 02:48:12,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=199, Invalid=4357, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 02:48:12,860 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 254 mSDsluCounter, 4074 mSDsCounter, 0 mSdLazyCounter, 16426 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 4146 SdHoareTripleChecker+Invalid, 16587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 16426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:48:12,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 4146 Invalid, 16587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 16426 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-02-24 02:48:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-02-24 02:48:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2022-02-24 02:48:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 327 states have (on average 1.0061162079510704) internal successors, (329), 327 states have internal predecessors, (329), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2022-02-24 02:48:12,871 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 325 [2022-02-24 02:48:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:48:12,872 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2022-02-24 02:48:12,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 66 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2022-02-24 02:48:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-02-24 02:48:12,873 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:48:12,874 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:48:12,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-24 02:48:12,874 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:48:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:48:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1978061264, now seen corresponding path program 64 times [2022-02-24 02:48:12,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:48:12,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395654477] [2022-02-24 02:48:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:48:12,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:48:12,879 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:48:12,879 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:48:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:48:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:48:15,232 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:48:15,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395654477] [2022-02-24 02:48:15,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1395654477] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:48:15,232 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:48:15,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-24 02:48:15,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459762486] [2022-02-24 02:48:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:48:15,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-24 02:48:15,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:48:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-24 02:48:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4359, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 02:48:15,234 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:48:20,425 INFO L93 Difference]: Finished difference Result 535 states and 538 transitions. [2022-02-24 02:48:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-24 02:48:20,427 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 330 [2022-02-24 02:48:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:48:20,428 INFO L225 Difference]: With dead ends: 535 [2022-02-24 02:48:20,428 INFO L226 Difference]: Without dead ends: 339 [2022-02-24 02:48:20,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=202, Invalid=4490, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 02:48:20,429 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 229 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 16986 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 17135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 16986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:48:20,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 4348 Invalid, 17135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 16986 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-02-24 02:48:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-02-24 02:48:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 336. [2022-02-24 02:48:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 332 states have (on average 1.0060240963855422) internal successors, (334), 332 states have internal predecessors, (334), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2022-02-24 02:48:20,441 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 330 [2022-02-24 02:48:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:48:20,441 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2022-02-24 02:48:20,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 67 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2022-02-24 02:48:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-02-24 02:48:20,443 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:48:20,443 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:48:20,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-24 02:48:20,443 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:48:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:48:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1019551067, now seen corresponding path program 65 times [2022-02-24 02:48:20,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:48:20,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493586668] [2022-02-24 02:48:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:48:20,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:48:20,449 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:48:20,449 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:48:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:48:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:22,908 INFO 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 02:48:22,909 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:48:22,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493586668] [2022-02-24 02:48:22,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1493586668] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:48:22,909 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:48:22,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-24 02:48:22,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061244146] [2022-02-24 02:48:22,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:48:22,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-24 02:48:22,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:48:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-24 02:48:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=4492, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 02:48:22,910 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 69 states, 69 states have (on average 2.028985507246377) internal successors, (140), 68 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:48:28,217 INFO L93 Difference]: Finished difference Result 543 states and 546 transitions. [2022-02-24 02:48:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-24 02:48:28,218 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.028985507246377) internal successors, (140), 68 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 335 [2022-02-24 02:48:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:48:28,219 INFO L225 Difference]: With dead ends: 543 [2022-02-24 02:48:28,219 INFO L226 Difference]: Without dead ends: 344 [2022-02-24 02:48:28,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=4625, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 02:48:28,220 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 280 mSDsluCounter, 4288 mSDsCounter, 0 mSdLazyCounter, 17440 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 17615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 17440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:48:28,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 4362 Invalid, 17615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 17440 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-02-24 02:48:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-02-24 02:48:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2022-02-24 02:48:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 1.0059347181008902) internal successors, (339), 337 states have internal predecessors, (339), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2022-02-24 02:48:28,228 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 335 [2022-02-24 02:48:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:48:28,228 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2022-02-24 02:48:28,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.028985507246377) internal successors, (140), 68 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2022-02-24 02:48:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-02-24 02:48:28,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:48:28,230 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:48:28,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-24 02:48:28,231 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:48:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:48:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash 331492020, now seen corresponding path program 66 times [2022-02-24 02:48:28,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:48:28,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269102194] [2022-02-24 02:48:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:48:28,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:48:28,237 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:48:28,237 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:48:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:48:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:30,760 INFO 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 02:48:30,761 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:48:30,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269102194] [2022-02-24 02:48:30,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1269102194] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:48:30,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:48:30,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-24 02:48:30,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833085525] [2022-02-24 02:48:30,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:48:30,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-24 02:48:30,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:48:30,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-24 02:48:30,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4627, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 02:48:30,763 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand has 70 states, 70 states have (on average 2.0285714285714285) internal successors, (142), 69 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:48:36,233 INFO L93 Difference]: Finished difference Result 551 states and 554 transitions. [2022-02-24 02:48:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-24 02:48:36,233 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0285714285714285) internal successors, (142), 69 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 340 [2022-02-24 02:48:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:48:36,234 INFO L225 Difference]: With dead ends: 551 [2022-02-24 02:48:36,234 INFO L226 Difference]: Without dead ends: 349 [2022-02-24 02:48:36,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=208, Invalid=4762, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 02:48:36,235 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 4513 mSDsCounter, 0 mSdLazyCounter, 18028 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 4588 SdHoareTripleChecker+Invalid, 18187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 18028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:48:36,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 4588 Invalid, 18187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 18028 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-02-24 02:48:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-02-24 02:48:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2022-02-24 02:48:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 342 states have (on average 1.0058479532163742) internal successors, (344), 342 states have internal predecessors, (344), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 347 transitions. [2022-02-24 02:48:36,244 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 347 transitions. Word has length 340 [2022-02-24 02:48:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:48:36,244 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 347 transitions. [2022-02-24 02:48:36,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.0285714285714285) internal successors, (142), 69 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 347 transitions. [2022-02-24 02:48:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-02-24 02:48:36,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:48:36,246 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:48:36,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-24 02:48:36,246 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:48:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:48:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash -943279679, now seen corresponding path program 67 times [2022-02-24 02:48:36,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:48:36,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993233452] [2022-02-24 02:48:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:48:36,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:48:36,252 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:48:36,252 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:48:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:38,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:48:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:38,768 INFO 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 02:48:38,768 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:48:38,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993233452] [2022-02-24 02:48:38,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1993233452] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:48:38,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:48:38,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-24 02:48:38,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967703864] [2022-02-24 02:48:38,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:48:38,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-24 02:48:38,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:48:38,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-24 02:48:38,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 02:48:38,771 INFO L87 Difference]: Start difference. First operand 346 states and 347 transitions. Second operand has 71 states, 71 states have (on average 2.028169014084507) internal successors, (144), 70 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:48:44,642 INFO L93 Difference]: Finished difference Result 559 states and 562 transitions. [2022-02-24 02:48:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-24 02:48:44,642 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.028169014084507) internal successors, (144), 70 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 345 [2022-02-24 02:48:44,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:48:44,643 INFO L225 Difference]: With dead ends: 559 [2022-02-24 02:48:44,643 INFO L226 Difference]: Without dead ends: 354 [2022-02-24 02:48:44,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=211, Invalid=4901, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 02:48:44,644 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 282 mSDsluCounter, 4570 mSDsCounter, 0 mSdLazyCounter, 18522 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 18699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 18522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:48:44,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 4646 Invalid, 18699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 18522 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-02-24 02:48:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-02-24 02:48:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 351. [2022-02-24 02:48:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 347 states have (on average 1.005763688760807) internal successors, (349), 347 states have internal predecessors, (349), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2022-02-24 02:48:44,656 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 345 [2022-02-24 02:48:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:48:44,657 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2022-02-24 02:48:44,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.028169014084507) internal successors, (144), 70 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2022-02-24 02:48:44,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-02-24 02:48:44,658 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:48:44,659 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:48:44,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-24 02:48:44,659 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:48:44,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:48:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2093728664, now seen corresponding path program 68 times [2022-02-24 02:48:44,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:48:44,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245914722] [2022-02-24 02:48:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:48:44,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:48:44,665 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:48:44,665 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:48:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:48:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:48:47,262 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:48:47,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245914722] [2022-02-24 02:48:47,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [245914722] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:48:47,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:48:47,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-24 02:48:47,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048110828] [2022-02-24 02:48:47,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:48:47,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-24 02:48:47,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:48:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-24 02:48:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4903, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 02:48:47,263 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:48:53,028 INFO L93 Difference]: Finished difference Result 567 states and 570 transitions. [2022-02-24 02:48:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-24 02:48:53,028 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 350 [2022-02-24 02:48:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:48:53,029 INFO L225 Difference]: With dead ends: 567 [2022-02-24 02:48:53,029 INFO L226 Difference]: Without dead ends: 359 [2022-02-24 02:48:53,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=214, Invalid=5042, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 02:48:53,030 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 343 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 18985 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 19193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 18985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:48:53,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 4641 Invalid, 19193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 18985 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-02-24 02:48:53,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-02-24 02:48:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 356. [2022-02-24 02:48:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 352 states have (on average 1.0056818181818181) internal successors, (354), 352 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 357 transitions. [2022-02-24 02:48:53,038 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 357 transitions. Word has length 350 [2022-02-24 02:48:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:48:53,038 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 357 transitions. [2022-02-24 02:48:53,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 71 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:48:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 357 transitions. [2022-02-24 02:48:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-02-24 02:48:53,040 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:48:53,040 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:48:53,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-24 02:48:53,040 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:48:53,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:48:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash -14999331, now seen corresponding path program 69 times [2022-02-24 02:48:53,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:48:53,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546853903] [2022-02-24 02:48:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:48:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:48:53,046 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:48:53,046 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:48:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:48:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:48:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:48:55,648 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:48:55,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546853903] [2022-02-24 02:48:55,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [546853903] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:48:55,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:48:55,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-24 02:48:55,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870744659] [2022-02-24 02:48:55,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:48:55,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-24 02:48:55,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:48:55,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-24 02:48:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5044, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 02:48:55,650 INFO L87 Difference]: Start difference. First operand 356 states and 357 transitions. Second operand has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 72 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:49:01,610 INFO L93 Difference]: Finished difference Result 575 states and 578 transitions. [2022-02-24 02:49:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-24 02:49:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 72 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 355 [2022-02-24 02:49:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:49:01,612 INFO L225 Difference]: With dead ends: 575 [2022-02-24 02:49:01,612 INFO L226 Difference]: Without dead ends: 364 [2022-02-24 02:49:01,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=217, Invalid=5185, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 02:49:01,613 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 326 mSDsluCounter, 4755 mSDsCounter, 0 mSdLazyCounter, 19573 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 19773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 19573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:49:01,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 4833 Invalid, 19773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 19573 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-02-24 02:49:01,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-02-24 02:49:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2022-02-24 02:49:01,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 357 states have (on average 1.0056022408963585) internal successors, (359), 357 states have internal predecessors, (359), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2022-02-24 02:49:01,625 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 355 [2022-02-24 02:49:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:49:01,625 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2022-02-24 02:49:01,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 72 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2022-02-24 02:49:01,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-02-24 02:49:01,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:49:01,627 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:49:01,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-24 02:49:01,627 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:49:01,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:49:01,627 INFO L85 PathProgramCache]: Analyzing trace with hash 527817852, now seen corresponding path program 70 times [2022-02-24 02:49:01,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:49:01,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839306679] [2022-02-24 02:49:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:49:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:49:01,633 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:49:01,633 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:49:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:04,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:49:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:04,326 INFO 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 02:49:04,326 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:49:04,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839306679] [2022-02-24 02:49:04,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1839306679] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:49:04,326 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:49:04,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-24 02:49:04,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279836294] [2022-02-24 02:49:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:49:04,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-24 02:49:04,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:49:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-24 02:49:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 02:49:04,328 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand has 74 states, 74 states have (on average 2.027027027027027) internal successors, (150), 73 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:49:10,542 INFO L93 Difference]: Finished difference Result 583 states and 586 transitions. [2022-02-24 02:49:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-24 02:49:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.027027027027027) internal successors, (150), 73 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 360 [2022-02-24 02:49:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:49:10,543 INFO L225 Difference]: With dead ends: 583 [2022-02-24 02:49:10,543 INFO L226 Difference]: Without dead ends: 369 [2022-02-24 02:49:10,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=220, Invalid=5330, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 02:49:10,544 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 229 mSDsluCounter, 5148 mSDsCounter, 0 mSdLazyCounter, 20289 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 5227 SdHoareTripleChecker+Invalid, 20441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 20289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:49:10,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 5227 Invalid, 20441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 20289 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-02-24 02:49:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-02-24 02:49:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 366. [2022-02-24 02:49:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 1.0055248618784531) internal successors, (364), 362 states have internal predecessors, (364), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 367 transitions. [2022-02-24 02:49:10,554 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 367 transitions. Word has length 360 [2022-02-24 02:49:10,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:49:10,554 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 367 transitions. [2022-02-24 02:49:10,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.027027027027027) internal successors, (150), 73 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:10,554 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 367 transitions. [2022-02-24 02:49:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-02-24 02:49:10,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:49:10,556 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:49:10,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-24 02:49:10,556 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:49:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:49:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash -645533703, now seen corresponding path program 71 times [2022-02-24 02:49:10,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:49:10,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998309040] [2022-02-24 02:49:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:49:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:49:10,562 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:49:10,562 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:49:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:49:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:13,389 INFO 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 02:49:13,389 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:49:13,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998309040] [2022-02-24 02:49:13,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1998309040] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:49:13,389 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:49:13,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-24 02:49:13,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072678742] [2022-02-24 02:49:13,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:49:13,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-24 02:49:13,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:49:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-24 02:49:13,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=5332, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 02:49:13,391 INFO L87 Difference]: Start difference. First operand 366 states and 367 transitions. Second operand has 75 states, 75 states have (on average 2.026666666666667) internal successors, (152), 74 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:49:19,738 INFO L93 Difference]: Finished difference Result 591 states and 594 transitions. [2022-02-24 02:49:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-24 02:49:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.026666666666667) internal successors, (152), 74 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 365 [2022-02-24 02:49:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:49:19,740 INFO L225 Difference]: With dead ends: 591 [2022-02-24 02:49:19,740 INFO L226 Difference]: Without dead ends: 374 [2022-02-24 02:49:19,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=223, Invalid=5477, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 02:49:19,741 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 260 mSDsluCounter, 5223 mSDsCounter, 0 mSdLazyCounter, 20821 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 20989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 20821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:49:19,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 5303 Invalid, 20989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 20821 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-02-24 02:49:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-02-24 02:49:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 371. [2022-02-24 02:49:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 367 states have (on average 1.005449591280654) internal successors, (369), 367 states have internal predecessors, (369), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2022-02-24 02:49:19,750 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 365 [2022-02-24 02:49:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:49:19,750 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2022-02-24 02:49:19,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.026666666666667) internal successors, (152), 74 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2022-02-24 02:49:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-02-24 02:49:19,751 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:49:19,751 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:49:19,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-24 02:49:19,752 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:49:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:49:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1169339744, now seen corresponding path program 72 times [2022-02-24 02:49:19,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:49:19,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860854593] [2022-02-24 02:49:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:49:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:49:19,758 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:49:19,758 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:49:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:22,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:49:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:22,560 INFO 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 02:49:22,561 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:49:22,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860854593] [2022-02-24 02:49:22,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1860854593] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:49:22,561 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:49:22,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-24 02:49:22,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659105962] [2022-02-24 02:49:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:49:22,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-24 02:49:22,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:49:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-24 02:49:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=5479, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 02:49:22,562 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:29,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:49:29,102 INFO L93 Difference]: Finished difference Result 599 states and 602 transitions. [2022-02-24 02:49:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-24 02:49:29,103 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 370 [2022-02-24 02:49:29,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:49:29,104 INFO L225 Difference]: With dead ends: 599 [2022-02-24 02:49:29,104 INFO L226 Difference]: Without dead ends: 379 [2022-02-24 02:49:29,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=226, Invalid=5626, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 02:49:29,104 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 273 mSDsluCounter, 5345 mSDsCounter, 0 mSdLazyCounter, 21388 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 21563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 21388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:49:29,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 5426 Invalid, 21563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 21388 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-02-24 02:49:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-02-24 02:49:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2022-02-24 02:49:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 372 states have (on average 1.0053763440860215) internal successors, (374), 372 states have internal predecessors, (374), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2022-02-24 02:49:29,113 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 370 [2022-02-24 02:49:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:49:29,113 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2022-02-24 02:49:29,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.026315789473684) internal successors, (154), 75 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2022-02-24 02:49:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-02-24 02:49:29,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:49:29,115 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:49:29,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-24 02:49:29,115 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:49:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:49:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1177231595, now seen corresponding path program 73 times [2022-02-24 02:49:29,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:49:29,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701608810] [2022-02-24 02:49:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:49:29,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:49:29,121 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:49:29,122 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:49:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:49:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:32,136 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 02:49:32,136 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:49:32,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701608810] [2022-02-24 02:49:32,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [701608810] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:49:32,137 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:49:32,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-24 02:49:32,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883358181] [2022-02-24 02:49:32,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:49:32,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-24 02:49:32,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:49:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-24 02:49:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5628, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 02:49:32,139 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 77 states, 77 states have (on average 2.0259740259740258) internal successors, (156), 76 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:49:38,806 INFO L93 Difference]: Finished difference Result 607 states and 610 transitions. [2022-02-24 02:49:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-24 02:49:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.0259740259740258) internal successors, (156), 76 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 375 [2022-02-24 02:49:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:49:38,807 INFO L225 Difference]: With dead ends: 607 [2022-02-24 02:49:38,807 INFO L226 Difference]: Without dead ends: 384 [2022-02-24 02:49:38,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=229, Invalid=5777, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 02:49:38,808 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 250 mSDsluCounter, 5559 mSDsCounter, 0 mSdLazyCounter, 22017 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 22181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 22017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:49:38,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 5641 Invalid, 22181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 22017 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-02-24 02:49:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-02-24 02:49:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2022-02-24 02:49:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 377 states have (on average 1.0053050397877985) internal successors, (379), 377 states have internal predecessors, (379), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2022-02-24 02:49:38,817 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 375 [2022-02-24 02:49:38,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:49:38,818 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2022-02-24 02:49:38,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.0259740259740258) internal successors, (156), 76 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2022-02-24 02:49:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-02-24 02:49:38,820 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:49:38,820 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:49:38,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-24 02:49:38,820 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:49:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:49:38,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2029293124, now seen corresponding path program 74 times [2022-02-24 02:49:38,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:49:38,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118850737] [2022-02-24 02:49:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:49:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:49:38,826 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:49:38,826 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:49:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:49:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:41,784 INFO 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 02:49:41,784 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:49:41,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118850737] [2022-02-24 02:49:41,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1118850737] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:49:41,785 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:49:41,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-24 02:49:41,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619116040] [2022-02-24 02:49:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:49:41,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-24 02:49:41,785 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:49:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-24 02:49:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=5779, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 02:49:41,786 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand has 78 states, 78 states have (on average 2.0256410256410255) internal successors, (158), 77 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:48,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:49:48,692 INFO L93 Difference]: Finished difference Result 615 states and 618 transitions. [2022-02-24 02:49:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-24 02:49:48,693 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0256410256410255) internal successors, (158), 77 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 380 [2022-02-24 02:49:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:49:48,694 INFO L225 Difference]: With dead ends: 615 [2022-02-24 02:49:48,694 INFO L226 Difference]: Without dead ends: 389 [2022-02-24 02:49:48,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=232, Invalid=5930, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 02:49:48,695 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 241 mSDsluCounter, 5740 mSDsCounter, 0 mSdLazyCounter, 22633 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 5823 SdHoareTripleChecker+Invalid, 22793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 22633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:49:48,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 5823 Invalid, 22793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 22633 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-02-24 02:49:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-02-24 02:49:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2022-02-24 02:49:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 1.0052356020942408) internal successors, (384), 382 states have internal predecessors, (384), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2022-02-24 02:49:48,705 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 380 [2022-02-24 02:49:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:49:48,705 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2022-02-24 02:49:48,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.0256410256410255) internal successors, (158), 77 states have internal predecessors, (158), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2022-02-24 02:49:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-02-24 02:49:48,707 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:49:48,707 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:49:48,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-24 02:49:48,707 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:49:48,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:49:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1856655823, now seen corresponding path program 75 times [2022-02-24 02:49:48,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:49:48,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360340356] [2022-02-24 02:49:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:49:48,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:49:48,713 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:49:48,714 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:49:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:49:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:49:51,696 INFO 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 02:49:51,696 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:49:51,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360340356] [2022-02-24 02:49:51,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1360340356] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:49:51,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:49:51,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-24 02:49:51,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141226976] [2022-02-24 02:49:51,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:49:51,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-24 02:49:51,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:49:51,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-24 02:49:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=5932, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 02:49:51,701 INFO L87 Difference]: Start difference. First operand 386 states and 387 transitions. Second operand has 79 states, 79 states have (on average 2.0253164556962027) internal successors, (160), 78 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:49:58,794 INFO L93 Difference]: Finished difference Result 623 states and 626 transitions. [2022-02-24 02:49:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-24 02:49:58,794 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0253164556962027) internal successors, (160), 78 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 385 [2022-02-24 02:49:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:49:58,796 INFO L225 Difference]: With dead ends: 623 [2022-02-24 02:49:58,796 INFO L226 Difference]: Without dead ends: 394 [2022-02-24 02:49:58,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=235, Invalid=6085, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 02:49:58,796 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 238 mSDsluCounter, 5908 mSDsCounter, 0 mSdLazyCounter, 23248 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 5992 SdHoareTripleChecker+Invalid, 23407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 23248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:49:58,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 5992 Invalid, 23407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 23248 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-02-24 02:49:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-02-24 02:49:58,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 391. [2022-02-24 02:49:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 387 states have (on average 1.0051679586563307) internal successors, (389), 387 states have internal predecessors, (389), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2022-02-24 02:49:58,806 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 385 [2022-02-24 02:49:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:49:58,806 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2022-02-24 02:49:58,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.0253164556962027) internal successors, (160), 78 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:49:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2022-02-24 02:49:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-02-24 02:49:58,808 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:49:58,808 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:49:58,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-24 02:49:58,808 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:49:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:49:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash -433215704, now seen corresponding path program 76 times [2022-02-24 02:49:58,809 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:49:58,809 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575158529] [2022-02-24 02:49:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:49:58,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:49:58,813 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:49:58,813 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:49:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:01,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:50:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:01,915 INFO 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 02:50:01,915 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:50:01,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575158529] [2022-02-24 02:50:01,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [575158529] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:50:01,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:50:01,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-24 02:50:01,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52561386] [2022-02-24 02:50:01,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:50:01,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-24 02:50:01,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:50:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-24 02:50:01,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=6087, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 02:50:01,918 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:50:09,200 INFO L93 Difference]: Finished difference Result 631 states and 634 transitions. [2022-02-24 02:50:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-24 02:50:09,201 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 390 [2022-02-24 02:50:09,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:50:09,202 INFO L225 Difference]: With dead ends: 631 [2022-02-24 02:50:09,202 INFO L226 Difference]: Without dead ends: 399 [2022-02-24 02:50:09,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=238, Invalid=6242, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 02:50:09,203 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 303 mSDsluCounter, 5908 mSDsCounter, 0 mSdLazyCounter, 23769 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 5993 SdHoareTripleChecker+Invalid, 23961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 23769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:50:09,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 5993 Invalid, 23961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 23769 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-02-24 02:50:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-02-24 02:50:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 396. [2022-02-24 02:50:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 392 states have (on average 1.0051020408163265) internal successors, (394), 392 states have internal predecessors, (394), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 397 transitions. [2022-02-24 02:50:09,221 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 397 transitions. Word has length 390 [2022-02-24 02:50:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:50:09,221 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 397 transitions. [2022-02-24 02:50:09,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.025) internal successors, (162), 79 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 397 transitions. [2022-02-24 02:50:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-02-24 02:50:09,223 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:50:09,223 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:50:09,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-24 02:50:09,223 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:50:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:50:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2077629773, now seen corresponding path program 77 times [2022-02-24 02:50:09,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:50:09,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194219625] [2022-02-24 02:50:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:50:09,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:50:09,228 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:50:09,228 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:50:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:50:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:12,341 INFO 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 02:50:12,342 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:50:12,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194219625] [2022-02-24 02:50:12,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1194219625] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:50:12,342 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:50:12,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-24 02:50:12,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224060345] [2022-02-24 02:50:12,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:50:12,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-24 02:50:12,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:50:12,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-24 02:50:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=6244, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 02:50:12,344 INFO L87 Difference]: Start difference. First operand 396 states and 397 transitions. Second operand has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 80 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:19,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:50:19,814 INFO L93 Difference]: Finished difference Result 639 states and 642 transitions. [2022-02-24 02:50:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-24 02:50:19,815 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 80 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 395 [2022-02-24 02:50:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:50:19,816 INFO L225 Difference]: With dead ends: 639 [2022-02-24 02:50:19,816 INFO L226 Difference]: Without dead ends: 404 [2022-02-24 02:50:19,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=241, Invalid=6401, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 02:50:19,817 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 340 mSDsluCounter, 5980 mSDsCounter, 0 mSdLazyCounter, 24340 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 24551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 24340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:50:19,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 6066 Invalid, 24551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 24340 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-02-24 02:50:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-02-24 02:50:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 401. [2022-02-24 02:50:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 397 states have (on average 1.0050377833753148) internal successors, (399), 397 states have internal predecessors, (399), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2022-02-24 02:50:19,829 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 395 [2022-02-24 02:50:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:50:19,829 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2022-02-24 02:50:19,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 80 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:19,830 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2022-02-24 02:50:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-02-24 02:50:19,832 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:50:19,832 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:50:19,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-24 02:50:19,832 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:50:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:50:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1043316724, now seen corresponding path program 78 times [2022-02-24 02:50:19,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:50:19,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695150798] [2022-02-24 02:50:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:50:19,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:50:19,839 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:50:19,839 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:50:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:50:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:22,952 INFO 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 02:50:22,952 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:50:22,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695150798] [2022-02-24 02:50:22,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1695150798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:50:22,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:50:22,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-24 02:50:22,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340243877] [2022-02-24 02:50:22,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:50:22,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-24 02:50:22,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:50:22,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-24 02:50:22,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=6403, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 02:50:22,954 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand has 82 states, 82 states have (on average 2.024390243902439) internal successors, (166), 81 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:30,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:50:30,512 INFO L93 Difference]: Finished difference Result 647 states and 650 transitions. [2022-02-24 02:50:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-24 02:50:30,512 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.024390243902439) internal successors, (166), 81 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 400 [2022-02-24 02:50:30,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:50:30,513 INFO L225 Difference]: With dead ends: 647 [2022-02-24 02:50:30,513 INFO L226 Difference]: Without dead ends: 409 [2022-02-24 02:50:30,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=244, Invalid=6562, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 02:50:30,515 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 275 mSDsluCounter, 6309 mSDsCounter, 0 mSdLazyCounter, 25072 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 6396 SdHoareTripleChecker+Invalid, 25251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 25072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:50:30,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 6396 Invalid, 25251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 25072 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-02-24 02:50:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-24 02:50:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 406. [2022-02-24 02:50:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 402 states have (on average 1.0049751243781095) internal successors, (404), 402 states have internal predecessors, (404), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 407 transitions. [2022-02-24 02:50:30,524 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 407 transitions. Word has length 400 [2022-02-24 02:50:30,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:50:30,524 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 407 transitions. [2022-02-24 02:50:30,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.024390243902439) internal successors, (166), 81 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 407 transitions. [2022-02-24 02:50:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-02-24 02:50:30,526 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:50:30,526 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:50:30,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-24 02:50:30,526 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:50:30,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:50:30,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1537469545, now seen corresponding path program 79 times [2022-02-24 02:50:30,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:50:30,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167894789] [2022-02-24 02:50:30,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:50:30,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:50:30,532 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:50:30,533 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:50:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:33,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:50:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:33,680 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 02:50:33,680 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:50:33,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167894789] [2022-02-24 02:50:33,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1167894789] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:50:33,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:50:33,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-24 02:50:33,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116905110] [2022-02-24 02:50:33,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:50:33,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-24 02:50:33,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:50:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-24 02:50:33,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=6564, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 02:50:33,682 INFO L87 Difference]: Start difference. First operand 406 states and 407 transitions. Second operand has 83 states, 83 states have (on average 2.0240963855421685) internal successors, (168), 82 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:50:41,427 INFO L93 Difference]: Finished difference Result 655 states and 658 transitions. [2022-02-24 02:50:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-24 02:50:41,427 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0240963855421685) internal successors, (168), 82 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 405 [2022-02-24 02:50:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:50:41,428 INFO L225 Difference]: With dead ends: 655 [2022-02-24 02:50:41,428 INFO L226 Difference]: Without dead ends: 414 [2022-02-24 02:50:41,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=247, Invalid=6725, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 02:50:41,429 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 240 mSDsluCounter, 6565 mSDsCounter, 0 mSdLazyCounter, 25767 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 6653 SdHoareTripleChecker+Invalid, 25929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 25767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:50:41,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 6653 Invalid, 25929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 25767 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-02-24 02:50:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-02-24 02:50:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 411. [2022-02-24 02:50:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 407 states have (on average 1.0049140049140048) internal successors, (409), 407 states have internal predecessors, (409), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2022-02-24 02:50:41,439 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 405 [2022-02-24 02:50:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:50:41,440 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2022-02-24 02:50:41,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0240963855421685) internal successors, (168), 82 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2022-02-24 02:50:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-02-24 02:50:41,441 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:50:41,441 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:50:41,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-24 02:50:41,442 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:50:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:50:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1412523792, now seen corresponding path program 80 times [2022-02-24 02:50:41,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:50:41,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260571544] [2022-02-24 02:50:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:50:41,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:50:41,448 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:50:41,448 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:50:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:50:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:44,674 INFO 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 02:50:44,674 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:50:44,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260571544] [2022-02-24 02:50:44,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [260571544] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:50:44,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:50:44,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-24 02:50:44,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119009802] [2022-02-24 02:50:44,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:50:44,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-24 02:50:44,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:50:44,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-24 02:50:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=6727, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 02:50:44,676 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:50:52,616 INFO L93 Difference]: Finished difference Result 663 states and 666 transitions. [2022-02-24 02:50:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-24 02:50:52,616 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 410 [2022-02-24 02:50:52,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:50:52,617 INFO L225 Difference]: With dead ends: 663 [2022-02-24 02:50:52,617 INFO L226 Difference]: Without dead ends: 419 [2022-02-24 02:50:52,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=250, Invalid=6890, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 02:50:52,618 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 253 mSDsluCounter, 6703 mSDsCounter, 0 mSdLazyCounter, 26398 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 6792 SdHoareTripleChecker+Invalid, 26567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 26398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:50:52,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 6792 Invalid, 26567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 26398 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-02-24 02:50:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-02-24 02:50:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2022-02-24 02:50:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 412 states have (on average 1.0048543689320388) internal successors, (414), 412 states have internal predecessors, (414), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2022-02-24 02:50:52,632 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 410 [2022-02-24 02:50:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:50:52,632 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2022-02-24 02:50:52,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0238095238095237) internal successors, (170), 83 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:50:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2022-02-24 02:50:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-02-24 02:50:52,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:50:52,634 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:50:52,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-24 02:50:52,634 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:50:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:50:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1972165509, now seen corresponding path program 81 times [2022-02-24 02:50:52,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:50:52,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127772702] [2022-02-24 02:50:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:50:52,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:50:52,640 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:50:52,641 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:50:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:50:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:50:55,957 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 02:50:55,957 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:50:55,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127772702] [2022-02-24 02:50:55,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2127772702] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:50:55,957 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:50:55,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-24 02:50:55,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757847280] [2022-02-24 02:50:55,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:50:55,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-24 02:50:55,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:50:55,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-24 02:50:55,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=6892, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 02:50:55,959 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 85 states, 85 states have (on average 2.023529411764706) internal successors, (172), 84 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:51:04,132 INFO L93 Difference]: Finished difference Result 671 states and 674 transitions. [2022-02-24 02:51:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-24 02:51:04,132 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.023529411764706) internal successors, (172), 84 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 415 [2022-02-24 02:51:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:51:04,134 INFO L225 Difference]: With dead ends: 671 [2022-02-24 02:51:04,134 INFO L226 Difference]: Without dead ends: 424 [2022-02-24 02:51:04,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=253, Invalid=7057, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 02:51:04,135 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 328 mSDsluCounter, 6688 mSDsCounter, 0 mSdLazyCounter, 26944 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 27151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 26944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:51:04,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 6778 Invalid, 27151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 26944 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-02-24 02:51:04,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-02-24 02:51:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 421. [2022-02-24 02:51:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 417 states have (on average 1.0047961630695443) internal successors, (419), 417 states have internal predecessors, (419), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2022-02-24 02:51:04,150 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 415 [2022-02-24 02:51:04,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:51:04,150 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2022-02-24 02:51:04,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.023529411764706) internal successors, (172), 84 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2022-02-24 02:51:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-02-24 02:51:04,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:51:04,152 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:51:04,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-24 02:51:04,152 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:51:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:51:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash 328921556, now seen corresponding path program 82 times [2022-02-24 02:51:04,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:51:04,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257766638] [2022-02-24 02:51:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:51:04,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:51:04,158 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:51:04,158 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:51:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:51:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:07,561 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 02:51:07,561 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:51:07,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257766638] [2022-02-24 02:51:07,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [257766638] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:51:07,561 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:51:07,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-24 02:51:07,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925574868] [2022-02-24 02:51:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:51:07,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-24 02:51:07,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:51:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-24 02:51:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=7059, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 02:51:07,563 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand has 86 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 85 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:51:15,862 INFO L93 Difference]: Finished difference Result 679 states and 682 transitions. [2022-02-24 02:51:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-24 02:51:15,862 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 85 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 420 [2022-02-24 02:51:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:51:15,864 INFO L225 Difference]: With dead ends: 679 [2022-02-24 02:51:15,864 INFO L226 Difference]: Without dead ends: 429 [2022-02-24 02:51:15,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=256, Invalid=7226, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 02:51:15,864 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 375 mSDsluCounter, 6745 mSDsCounter, 0 mSdLazyCounter, 27540 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 6836 SdHoareTripleChecker+Invalid, 27771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 27540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:51:15,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 6836 Invalid, 27771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 27540 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-02-24 02:51:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-24 02:51:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 426. [2022-02-24 02:51:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 422 states have (on average 1.004739336492891) internal successors, (424), 422 states have internal predecessors, (424), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 427 transitions. [2022-02-24 02:51:15,874 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 427 transitions. Word has length 420 [2022-02-24 02:51:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:51:15,874 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 427 transitions. [2022-02-24 02:51:15,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 85 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 427 transitions. [2022-02-24 02:51:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-02-24 02:51:15,876 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:51:15,876 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:51:15,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-24 02:51:15,876 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:51:15,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:51:15,877 INFO L85 PathProgramCache]: Analyzing trace with hash 215919265, now seen corresponding path program 83 times [2022-02-24 02:51:15,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:51:15,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157083293] [2022-02-24 02:51:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:51:15,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:51:15,884 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:51:15,884 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:51:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:19,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:51:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:19,268 INFO 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 02:51:19,268 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:51:19,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157083293] [2022-02-24 02:51:19,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [157083293] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:51:19,268 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:51:19,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-24 02:51:19,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207997972] [2022-02-24 02:51:19,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:51:19,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-24 02:51:19,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:51:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-24 02:51:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=7228, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 02:51:19,270 INFO L87 Difference]: Start difference. First operand 426 states and 427 transitions. Second operand has 87 states, 87 states have (on average 2.0229885057471266) internal successors, (176), 86 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:51:27,727 INFO L93 Difference]: Finished difference Result 687 states and 690 transitions. [2022-02-24 02:51:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-24 02:51:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0229885057471266) internal successors, (176), 86 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 425 [2022-02-24 02:51:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:51:27,729 INFO L225 Difference]: With dead ends: 687 [2022-02-24 02:51:27,729 INFO L226 Difference]: Without dead ends: 434 [2022-02-24 02:51:27,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=259, Invalid=7397, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 02:51:27,730 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 416 mSDsluCounter, 6819 mSDsCounter, 0 mSdLazyCounter, 28153 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 6911 SdHoareTripleChecker+Invalid, 28405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 28153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:51:27,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 6911 Invalid, 28405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 28153 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-02-24 02:51:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-02-24 02:51:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2022-02-24 02:51:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 427 states have (on average 1.0046838407494145) internal successors, (429), 427 states have internal predecessors, (429), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2022-02-24 02:51:27,740 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 425 [2022-02-24 02:51:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:51:27,740 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2022-02-24 02:51:27,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.0229885057471266) internal successors, (176), 86 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2022-02-24 02:51:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-02-24 02:51:27,742 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:51:27,742 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:51:27,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-24 02:51:27,743 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:51:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:51:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1675130184, now seen corresponding path program 84 times [2022-02-24 02:51:27,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:51:27,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865374261] [2022-02-24 02:51:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:51:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:51:27,749 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:51:27,750 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:51:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:51:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:31,175 INFO 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 02:51:31,175 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:51:31,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865374261] [2022-02-24 02:51:31,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [865374261] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:51:31,175 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:51:31,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-24 02:51:31,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442923079] [2022-02-24 02:51:31,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:51:31,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-24 02:51:31,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:51:31,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-24 02:51:31,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=7399, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 02:51:31,176 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:51:39,850 INFO L93 Difference]: Finished difference Result 695 states and 698 transitions. [2022-02-24 02:51:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-24 02:51:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 430 [2022-02-24 02:51:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:51:39,852 INFO L225 Difference]: With dead ends: 695 [2022-02-24 02:51:39,852 INFO L226 Difference]: Without dead ends: 439 [2022-02-24 02:51:39,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=262, Invalid=7570, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 02:51:39,853 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 395 mSDsluCounter, 7050 mSDsCounter, 0 mSdLazyCounter, 28867 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 7143 SdHoareTripleChecker+Invalid, 29109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 28867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:51:39,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 7143 Invalid, 29109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 28867 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-02-24 02:51:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-02-24 02:51:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 436. [2022-02-24 02:51:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 432 states have (on average 1.0046296296296295) internal successors, (434), 432 states have internal predecessors, (434), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 437 transitions. [2022-02-24 02:51:39,865 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 437 transitions. Word has length 430 [2022-02-24 02:51:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:51:39,866 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 437 transitions. [2022-02-24 02:51:39,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.022727272727273) internal successors, (178), 87 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 437 transitions. [2022-02-24 02:51:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-02-24 02:51:39,868 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:51:39,868 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:51:39,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-24 02:51:39,868 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:51:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:51:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash -10020419, now seen corresponding path program 85 times [2022-02-24 02:51:39,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:51:39,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852085431] [2022-02-24 02:51:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:51:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:51:39,874 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:51:39,874 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:51:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:51:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:43,381 INFO 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 02:51:43,382 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:51:43,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852085431] [2022-02-24 02:51:43,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1852085431] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:51:43,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:51:43,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-24 02:51:43,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996093574] [2022-02-24 02:51:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:51:43,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-24 02:51:43,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:51:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-24 02:51:43,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=7572, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 02:51:43,384 INFO L87 Difference]: Start difference. First operand 436 states and 437 transitions. Second operand has 89 states, 89 states have (on average 2.0224719101123596) internal successors, (180), 88 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:51:52,292 INFO L93 Difference]: Finished difference Result 703 states and 706 transitions. [2022-02-24 02:51:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-24 02:51:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0224719101123596) internal successors, (180), 88 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 435 [2022-02-24 02:51:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:51:52,293 INFO L225 Difference]: With dead ends: 703 [2022-02-24 02:51:52,293 INFO L226 Difference]: Without dead ends: 444 [2022-02-24 02:51:52,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=265, Invalid=7745, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 02:51:52,294 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 304 mSDsluCounter, 7458 mSDsCounter, 0 mSdLazyCounter, 29694 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 7552 SdHoareTripleChecker+Invalid, 29891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 29694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:51:52,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 7552 Invalid, 29891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 29694 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-02-24 02:51:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-02-24 02:51:52,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2022-02-24 02:51:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 437 states have (on average 1.0045766590389016) internal successors, (439), 437 states have internal predecessors, (439), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2022-02-24 02:51:52,304 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 435 [2022-02-24 02:51:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:51:52,305 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2022-02-24 02:51:52,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.0224719101123596) internal successors, (180), 88 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:51:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2022-02-24 02:51:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-02-24 02:51:52,306 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:51:52,306 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:51:52,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-24 02:51:52,307 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:51:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:51:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2145821596, now seen corresponding path program 86 times [2022-02-24 02:51:52,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:51:52,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77388202] [2022-02-24 02:51:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:51:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:51:52,313 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:51:52,313 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:51:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:51:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:51:55,947 INFO 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 02:51:55,947 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:51:55,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77388202] [2022-02-24 02:51:55,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [77388202] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:51:55,948 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:51:55,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-24 02:51:55,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641384112] [2022-02-24 02:51:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:51:55,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-24 02:51:55,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:51:55,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-24 02:51:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=7747, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 02:51:55,949 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand has 90 states, 90 states have (on average 2.022222222222222) internal successors, (182), 89 states have internal predecessors, (182), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:52:05,112 INFO L93 Difference]: Finished difference Result 711 states and 714 transitions. [2022-02-24 02:52:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-24 02:52:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.022222222222222) internal successors, (182), 89 states have internal predecessors, (182), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 440 [2022-02-24 02:52:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:52:05,114 INFO L225 Difference]: With dead ends: 711 [2022-02-24 02:52:05,114 INFO L226 Difference]: Without dead ends: 449 [2022-02-24 02:52:05,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=268, Invalid=7922, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 02:52:05,115 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 413 mSDsluCounter, 7368 mSDsCounter, 0 mSdLazyCounter, 30229 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 7463 SdHoareTripleChecker+Invalid, 30481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 30229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:52:05,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 7463 Invalid, 30481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 30229 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-02-24 02:52:05,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-02-24 02:52:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 446. [2022-02-24 02:52:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 442 states have (on average 1.004524886877828) internal successors, (444), 442 states have internal predecessors, (444), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 447 transitions. [2022-02-24 02:52:05,125 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 447 transitions. Word has length 440 [2022-02-24 02:52:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:52:05,125 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 447 transitions. [2022-02-24 02:52:05,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.022222222222222) internal successors, (182), 89 states have internal predecessors, (182), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 447 transitions. [2022-02-24 02:52:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-02-24 02:52:05,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:52:05,127 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:52:05,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-24 02:52:05,127 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:52:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:52:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1634986201, now seen corresponding path program 87 times [2022-02-24 02:52:05,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:52:05,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389969715] [2022-02-24 02:52:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:52:05,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:52:05,133 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:52:05,133 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:52:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:52:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:52:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:52:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:52:08,815 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:52:08,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389969715] [2022-02-24 02:52:08,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1389969715] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:52:08,815 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:52:08,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-24 02:52:08,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936987044] [2022-02-24 02:52:08,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:52:08,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-24 02:52:08,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:52:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-24 02:52:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=7924, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 02:52:08,817 INFO L87 Difference]: Start difference. First operand 446 states and 447 transitions. Second operand has 91 states, 91 states have (on average 2.021978021978022) internal successors, (184), 90 states have internal predecessors, (184), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:52:18,198 INFO L93 Difference]: Finished difference Result 719 states and 722 transitions. [2022-02-24 02:52:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-24 02:52:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.021978021978022) internal successors, (184), 90 states have internal predecessors, (184), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 445 [2022-02-24 02:52:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:52:18,199 INFO L225 Difference]: With dead ends: 719 [2022-02-24 02:52:18,199 INFO L226 Difference]: Without dead ends: 454 [2022-02-24 02:52:18,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=271, Invalid=8101, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 02:52:18,200 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 340 mSDsluCounter, 7735 mSDsCounter, 0 mSdLazyCounter, 31045 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 7831 SdHoareTripleChecker+Invalid, 31261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 31045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:52:18,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 7831 Invalid, 31261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 31045 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-02-24 02:52:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-02-24 02:52:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 451. [2022-02-24 02:52:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 447 states have (on average 1.0044742729306488) internal successors, (449), 447 states have internal predecessors, (449), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2022-02-24 02:52:18,212 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 445 [2022-02-24 02:52:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:52:18,212 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2022-02-24 02:52:18,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.021978021978022) internal successors, (184), 90 states have internal predecessors, (184), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2022-02-24 02:52:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-02-24 02:52:18,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:52:18,214 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:52:18,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-24 02:52:18,214 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:52:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:52:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash -188056448, now seen corresponding path program 88 times [2022-02-24 02:52:18,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:52:18,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287244849] [2022-02-24 02:52:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:52:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:52:18,220 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:52:18,220 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:52:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:52:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:52:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:52:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:52:21,895 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:52:21,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287244849] [2022-02-24 02:52:21,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [287244849] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:52:21,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:52:21,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-24 02:52:21,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848230389] [2022-02-24 02:52:21,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:52:21,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-24 02:52:21,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:52:21,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-24 02:52:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=8103, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 02:52:21,897 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:52:31,426 INFO L93 Difference]: Finished difference Result 727 states and 730 transitions. [2022-02-24 02:52:31,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-24 02:52:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 450 [2022-02-24 02:52:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:52:31,428 INFO L225 Difference]: With dead ends: 727 [2022-02-24 02:52:31,428 INFO L226 Difference]: Without dead ends: 459 [2022-02-24 02:52:31,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=274, Invalid=8282, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 02:52:31,429 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 411 mSDsluCounter, 7744 mSDsCounter, 0 mSdLazyCounter, 31653 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 7841 SdHoareTripleChecker+Invalid, 31905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 31653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:52:31,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 7841 Invalid, 31905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 31653 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-02-24 02:52:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-02-24 02:52:31,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 456. [2022-02-24 02:52:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 452 states have (on average 1.0044247787610618) internal successors, (454), 452 states have internal predecessors, (454), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 457 transitions. [2022-02-24 02:52:31,439 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 457 transitions. Word has length 450 [2022-02-24 02:52:31,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:52:31,439 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 457 transitions. [2022-02-24 02:52:31,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 91 states have internal predecessors, (186), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 457 transitions. [2022-02-24 02:52:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-02-24 02:52:31,441 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:52:31,441 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:52:31,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-24 02:52:31,441 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:52:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:52:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash 433248245, now seen corresponding path program 89 times [2022-02-24 02:52:31,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:52:31,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405628326] [2022-02-24 02:52:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:52:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:52:31,447 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:52:31,447 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:52:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:52:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:52:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:52:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:52:35,174 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:52:35,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405628326] [2022-02-24 02:52:35,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [405628326] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:52:35,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:52:35,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-24 02:52:35,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194632732] [2022-02-24 02:52:35,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:52:35,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-24 02:52:35,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:52:35,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-24 02:52:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=8284, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 02:52:35,175 INFO L87 Difference]: Start difference. First operand 456 states and 457 transitions. Second operand has 93 states, 93 states have (on average 2.021505376344086) internal successors, (188), 92 states have internal predecessors, (188), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:52:44,933 INFO L93 Difference]: Finished difference Result 735 states and 738 transitions. [2022-02-24 02:52:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-24 02:52:44,933 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.021505376344086) internal successors, (188), 92 states have internal predecessors, (188), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 455 [2022-02-24 02:52:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:52:44,934 INFO L225 Difference]: With dead ends: 735 [2022-02-24 02:52:44,934 INFO L226 Difference]: Without dead ends: 464 [2022-02-24 02:52:44,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=277, Invalid=8465, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 02:52:44,935 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 346 mSDsluCounter, 8095 mSDsCounter, 0 mSdLazyCounter, 32473 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 8193 SdHoareTripleChecker+Invalid, 32693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 32473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:52:44,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 8193 Invalid, 32693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 32473 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-02-24 02:52:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-02-24 02:52:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2022-02-24 02:52:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 457 states have (on average 1.0043763676148796) internal successors, (459), 457 states have internal predecessors, (459), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 462 transitions. [2022-02-24 02:52:44,947 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 462 transitions. Word has length 455 [2022-02-24 02:52:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:52:44,947 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 462 transitions. [2022-02-24 02:52:44,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.021505376344086) internal successors, (188), 92 states have internal predecessors, (188), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 462 transitions. [2022-02-24 02:52:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-02-24 02:52:44,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:52:44,949 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:52:44,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-24 02:52:44,949 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:52:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:52:44,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1874504348, now seen corresponding path program 90 times [2022-02-24 02:52:44,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:52:44,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897363944] [2022-02-24 02:52:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:52:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:52:44,955 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:52:44,955 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:52:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:52:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:52:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:52:48,765 INFO 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 02:52:48,765 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:52:48,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897363944] [2022-02-24 02:52:48,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [897363944] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:52:48,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:52:48,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-24 02:52:48,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803113408] [2022-02-24 02:52:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:52:48,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-24 02:52:48,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:52:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-24 02:52:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=8467, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 02:52:48,767 INFO L87 Difference]: Start difference. First operand 461 states and 462 transitions. Second operand has 94 states, 94 states have (on average 2.021276595744681) internal successors, (190), 93 states have internal predecessors, (190), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:58,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:52:58,837 INFO L93 Difference]: Finished difference Result 743 states and 746 transitions. [2022-02-24 02:52:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-24 02:52:58,837 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.021276595744681) internal successors, (190), 93 states have internal predecessors, (190), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 460 [2022-02-24 02:52:58,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:52:58,838 INFO L225 Difference]: With dead ends: 743 [2022-02-24 02:52:58,838 INFO L226 Difference]: Without dead ends: 469 [2022-02-24 02:52:58,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=280, Invalid=8650, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 02:52:58,839 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 383 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 33148 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 8292 SdHoareTripleChecker+Invalid, 33387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 33148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:52:58,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 8292 Invalid, 33387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [239 Valid, 33148 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-02-24 02:52:58,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-02-24 02:52:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 466. [2022-02-24 02:52:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 462 states have (on average 1.0043290043290043) internal successors, (464), 462 states have internal predecessors, (464), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 467 transitions. [2022-02-24 02:52:58,850 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 467 transitions. Word has length 460 [2022-02-24 02:52:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:52:58,850 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 467 transitions. [2022-02-24 02:52:58,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.021276595744681) internal successors, (190), 93 states have internal predecessors, (190), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:52:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 467 transitions. [2022-02-24 02:52:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-02-24 02:52:58,852 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:52:58,852 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:52:58,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-24 02:52:58,853 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:52:58,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:52:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2110891793, now seen corresponding path program 91 times [2022-02-24 02:52:58,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:52:58,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253893030] [2022-02-24 02:52:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:52:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:52:58,858 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:52:58,859 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:52:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:53:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:53:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:53:02,871 INFO 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 02:53:02,871 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:53:02,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253893030] [2022-02-24 02:53:02,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [253893030] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:53:02,871 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:53:02,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-24 02:53:02,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133510260] [2022-02-24 02:53:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:53:02,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-24 02:53:02,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:53:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-24 02:53:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=8652, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 02:53:02,873 INFO L87 Difference]: Start difference. First operand 466 states and 467 transitions. Second operand has 95 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 94 states have internal predecessors, (192), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:53:13,161 INFO L93 Difference]: Finished difference Result 751 states and 754 transitions. [2022-02-24 02:53:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-24 02:53:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 94 states have internal predecessors, (192), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 465 [2022-02-24 02:53:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:53:13,163 INFO L225 Difference]: With dead ends: 751 [2022-02-24 02:53:13,163 INFO L226 Difference]: Without dead ends: 474 [2022-02-24 02:53:13,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=283, Invalid=8837, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 02:53:13,164 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 386 mSDsluCounter, 8378 mSDsCounter, 0 mSdLazyCounter, 33882 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 8478 SdHoareTripleChecker+Invalid, 34123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 33882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:53:13,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 8478 Invalid, 34123 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [241 Valid, 33882 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-02-24 02:53:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-02-24 02:53:13,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 471. [2022-02-24 02:53:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 467 states have (on average 1.0042826552462527) internal successors, (469), 467 states have internal predecessors, (469), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 472 transitions. [2022-02-24 02:53:13,176 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 472 transitions. Word has length 465 [2022-02-24 02:53:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:53:13,176 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 472 transitions. [2022-02-24 02:53:13,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 94 states have internal predecessors, (192), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 472 transitions. [2022-02-24 02:53:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-02-24 02:53:13,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:53:13,179 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:53:13,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-24 02:53:13,179 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:53:13,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:53:13,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1421251000, now seen corresponding path program 92 times [2022-02-24 02:53:13,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:53:13,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959073289] [2022-02-24 02:53:13,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:53:13,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:53:13,185 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:53:13,185 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:53:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:53:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:53:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:53:17,165 INFO 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 02:53:17,166 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:53:17,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959073289] [2022-02-24 02:53:17,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1959073289] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:53:17,166 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:53:17,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-24 02:53:17,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853294107] [2022-02-24 02:53:17,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:53:17,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-24 02:53:17,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:53:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-24 02:53:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=8839, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 02:53:17,167 INFO L87 Difference]: Start difference. First operand 471 states and 472 transitions. Second operand has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:27,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:53:27,676 INFO L93 Difference]: Finished difference Result 759 states and 762 transitions. [2022-02-24 02:53:27,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-24 02:53:27,677 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 470 [2022-02-24 02:53:27,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:53:27,678 INFO L225 Difference]: With dead ends: 759 [2022-02-24 02:53:27,678 INFO L226 Difference]: Without dead ends: 479 [2022-02-24 02:53:27,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=286, Invalid=9026, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 02:53:27,679 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 417 mSDsluCounter, 8495 mSDsCounter, 0 mSdLazyCounter, 34582 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 8596 SdHoareTripleChecker+Invalid, 34839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 34582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:53:27,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 8596 Invalid, 34839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 34582 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-02-24 02:53:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-02-24 02:53:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 476. [2022-02-24 02:53:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 472 states have (on average 1.0042372881355932) internal successors, (474), 472 states have internal predecessors, (474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 477 transitions. [2022-02-24 02:53:27,690 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 477 transitions. Word has length 470 [2022-02-24 02:53:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:53:27,690 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 477 transitions. [2022-02-24 02:53:27,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 95 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 477 transitions. [2022-02-24 02:53:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-02-24 02:53:27,692 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:53:27,692 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:53:27,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-24 02:53:27,692 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:53:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:53:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash -314698195, now seen corresponding path program 93 times [2022-02-24 02:53:27,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:53:27,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248584207] [2022-02-24 02:53:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:53:27,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:53:27,698 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:53:27,699 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:53:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:53:31,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:53:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:53:31,724 INFO 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 02:53:31,724 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:53:31,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248584207] [2022-02-24 02:53:31,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [248584207] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:53:31,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:53:31,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-24 02:53:31,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670782084] [2022-02-24 02:53:31,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:53:31,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-24 02:53:31,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:53:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-24 02:53:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=9028, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 02:53:31,727 INFO L87 Difference]: Start difference. First operand 476 states and 477 transitions. Second operand has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 96 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:53:42,470 INFO L93 Difference]: Finished difference Result 767 states and 770 transitions. [2022-02-24 02:53:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-24 02:53:42,470 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 96 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 475 [2022-02-24 02:53:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:53:42,472 INFO L225 Difference]: With dead ends: 767 [2022-02-24 02:53:42,472 INFO L226 Difference]: Without dead ends: 484 [2022-02-24 02:53:42,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=289, Invalid=9217, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 02:53:42,473 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 352 mSDsluCounter, 8854 mSDsCounter, 0 mSdLazyCounter, 35434 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 8956 SdHoareTripleChecker+Invalid, 35659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 35434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:53:42,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 8956 Invalid, 35659 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [225 Valid, 35434 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-02-24 02:53:42,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-02-24 02:53:42,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 481. [2022-02-24 02:53:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 477 states have (on average 1.0041928721174005) internal successors, (479), 477 states have internal predecessors, (479), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2022-02-24 02:53:42,484 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 475 [2022-02-24 02:53:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:53:42,485 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2022-02-24 02:53:42,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 96 states have internal predecessors, (196), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2022-02-24 02:53:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-02-24 02:53:42,487 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:53:42,487 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:53:42,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-24 02:53:42,487 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:53:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:53:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash -968292564, now seen corresponding path program 94 times [2022-02-24 02:53:42,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:53:42,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376378076] [2022-02-24 02:53:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:53:42,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:53:42,494 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:53:42,494 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:53:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:53:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:53:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:53:46,605 INFO 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 02:53:46,606 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:53:46,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376378076] [2022-02-24 02:53:46,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376378076] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:53:46,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:53:46,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-24 02:53:46,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067295175] [2022-02-24 02:53:46,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:53:46,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-24 02:53:46,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:53:46,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-24 02:53:46,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=9219, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 02:53:46,608 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand has 98 states, 98 states have (on average 2.020408163265306) internal successors, (198), 97 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:53:57,557 INFO L93 Difference]: Finished difference Result 775 states and 778 transitions. [2022-02-24 02:53:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-24 02:53:57,557 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.020408163265306) internal successors, (198), 97 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 480 [2022-02-24 02:53:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:53:57,559 INFO L225 Difference]: With dead ends: 775 [2022-02-24 02:53:57,559 INFO L226 Difference]: Without dead ends: 489 [2022-02-24 02:53:57,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=292, Invalid=9410, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 02:53:57,560 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 315 mSDsluCounter, 9145 mSDsCounter, 0 mSdLazyCounter, 36252 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 9248 SdHoareTripleChecker+Invalid, 36459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 36252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:53:57,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 9248 Invalid, 36459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 36252 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-02-24 02:53:57,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-02-24 02:53:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2022-02-24 02:53:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 482 states have (on average 1.004149377593361) internal successors, (484), 482 states have internal predecessors, (484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 487 transitions. [2022-02-24 02:53:57,572 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 487 transitions. Word has length 480 [2022-02-24 02:53:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:53:57,572 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 487 transitions. [2022-02-24 02:53:57,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.020408163265306) internal successors, (198), 97 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:53:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 487 transitions. [2022-02-24 02:53:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-02-24 02:53:57,575 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:53:57,575 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:53:57,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-24 02:53:57,575 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:53:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:53:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1852171593, now seen corresponding path program 95 times [2022-02-24 02:53:57,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:53:57,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3354528] [2022-02-24 02:53:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:53:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:53:57,587 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:53:57,587 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:53:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:54:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:54:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:54:01,716 INFO 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 02:54:01,717 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:54:01,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3354528] [2022-02-24 02:54:01,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [3354528] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:54:01,717 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:54:01,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-24 02:54:01,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167215694] [2022-02-24 02:54:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:54:01,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-24 02:54:01,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:54:01,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-24 02:54:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=9412, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 02:54:01,719 INFO L87 Difference]: Start difference. First operand 486 states and 487 transitions. Second operand has 99 states, 99 states have (on average 2.0202020202020203) internal successors, (200), 98 states have internal predecessors, (200), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:54:12,875 INFO L93 Difference]: Finished difference Result 783 states and 786 transitions. [2022-02-24 02:54:12,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-24 02:54:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0202020202020203) internal successors, (200), 98 states have internal predecessors, (200), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 485 [2022-02-24 02:54:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:54:12,876 INFO L225 Difference]: With dead ends: 783 [2022-02-24 02:54:12,876 INFO L226 Difference]: Without dead ends: 494 [2022-02-24 02:54:12,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=295, Invalid=9605, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 02:54:12,877 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 348 mSDsluCounter, 9263 mSDsCounter, 0 mSdLazyCounter, 36973 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 9367 SdHoareTripleChecker+Invalid, 37197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 36973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:54:12,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 9367 Invalid, 37197 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [224 Valid, 36973 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-02-24 02:54:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-02-24 02:54:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 491. [2022-02-24 02:54:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 487 states have (on average 1.004106776180698) internal successors, (489), 487 states have internal predecessors, (489), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 492 transitions. [2022-02-24 02:54:12,889 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 492 transitions. Word has length 485 [2022-02-24 02:54:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:54:12,889 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 492 transitions. [2022-02-24 02:54:12,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.0202020202020203) internal successors, (200), 98 states have internal predecessors, (200), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 492 transitions. [2022-02-24 02:54:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-02-24 02:54:12,891 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:54:12,892 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:54:12,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-24 02:54:12,892 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:54:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:54:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash -315203568, now seen corresponding path program 96 times [2022-02-24 02:54:12,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:54:12,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377487064] [2022-02-24 02:54:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:54:12,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:54:12,899 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:54:12,899 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:54:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:54:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:54:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:54:17,111 INFO 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 02:54:17,111 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:54:17,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377487064] [2022-02-24 02:54:17,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1377487064] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:54:17,112 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:54:17,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-24 02:54:17,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097804974] [2022-02-24 02:54:17,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:54:17,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-24 02:54:17,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:54:17,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-24 02:54:17,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=9607, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 02:54:17,113 INFO L87 Difference]: Start difference. First operand 491 states and 492 transitions. Second operand has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:28,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:54:28,529 INFO L93 Difference]: Finished difference Result 791 states and 794 transitions. [2022-02-24 02:54:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-24 02:54:28,530 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 490 [2022-02-24 02:54:28,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:54:28,531 INFO L225 Difference]: With dead ends: 791 [2022-02-24 02:54:28,531 INFO L226 Difference]: Without dead ends: 499 [2022-02-24 02:54:28,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=298, Invalid=9802, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 02:54:28,532 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 327 mSDsluCounter, 9518 mSDsCounter, 0 mSdLazyCounter, 37783 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 9623 SdHoareTripleChecker+Invalid, 37997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 37783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:54:28,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 9623 Invalid, 37997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [214 Valid, 37783 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-02-24 02:54:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-02-24 02:54:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 496. [2022-02-24 02:54:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 492 states have (on average 1.0040650406504066) internal successors, (494), 492 states have internal predecessors, (494), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 497 transitions. [2022-02-24 02:54:28,544 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 497 transitions. Word has length 490 [2022-02-24 02:54:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:54:28,544 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 497 transitions. [2022-02-24 02:54:28,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.02) internal successors, (202), 99 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 497 transitions. [2022-02-24 02:54:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-02-24 02:54:28,546 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:54:28,546 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:54:28,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-24 02:54:28,546 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:54:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:54:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1243010149, now seen corresponding path program 97 times [2022-02-24 02:54:28,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:54:28,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245389766] [2022-02-24 02:54:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:54:28,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:54:28,554 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:54:28,554 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:54:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:54:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:54:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:54:32,858 INFO 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 02:54:32,858 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:54:32,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245389766] [2022-02-24 02:54:32,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245389766] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:54:32,858 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:54:32,858 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-24 02:54:32,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549111552] [2022-02-24 02:54:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:54:32,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-24 02:54:32,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:54:32,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-24 02:54:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=9804, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 02:54:32,860 INFO L87 Difference]: Start difference. First operand 496 states and 497 transitions. Second operand has 101 states, 101 states have (on average 2.01980198019802) internal successors, (204), 100 states have internal predecessors, (204), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:54:44,512 INFO L93 Difference]: Finished difference Result 799 states and 802 transitions. [2022-02-24 02:54:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-24 02:54:44,513 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.01980198019802) internal successors, (204), 100 states have internal predecessors, (204), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 495 [2022-02-24 02:54:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:54:44,514 INFO L225 Difference]: With dead ends: 799 [2022-02-24 02:54:44,514 INFO L226 Difference]: Without dead ends: 504 [2022-02-24 02:54:44,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=301, Invalid=10001, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 02:54:44,515 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 372 mSDsluCounter, 9610 mSDsCounter, 0 mSdLazyCounter, 38502 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 9716 SdHoareTripleChecker+Invalid, 38739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 38502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:54:44,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 9716 Invalid, 38739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [237 Valid, 38502 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 02:54:44,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-02-24 02:54:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 501. [2022-02-24 02:54:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 497 states have (on average 1.0040241448692153) internal successors, (499), 497 states have internal predecessors, (499), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 502 transitions. [2022-02-24 02:54:44,526 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 502 transitions. Word has length 495 [2022-02-24 02:54:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:54:44,527 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 502 transitions. [2022-02-24 02:54:44,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.01980198019802) internal successors, (204), 100 states have internal predecessors, (204), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:54:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 502 transitions. [2022-02-24 02:54:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-02-24 02:54:44,529 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:54:44,529 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:54:44,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-24 02:54:44,529 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:54:44,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:54:44,529 INFO L85 PathProgramCache]: Analyzing trace with hash 461617396, now seen corresponding path program 98 times [2022-02-24 02:54:44,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:54:44,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110512561] [2022-02-24 02:54:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:54:44,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:54:44,538 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:54:44,539 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:54:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:54:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:54:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:54:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:54:48,951 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:54:48,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110512561] [2022-02-24 02:54:48,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2110512561] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:54:48,951 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:54:48,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-24 02:54:48,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272171749] [2022-02-24 02:54:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:54:48,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-24 02:54:48,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:54:48,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-24 02:54:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=10003, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 02:54:48,953 INFO L87 Difference]: Start difference. First operand 501 states and 502 transitions. Second operand has 102 states, 102 states have (on average 2.019607843137255) internal successors, (206), 101 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:55:00,812 INFO L93 Difference]: Finished difference Result 807 states and 810 transitions. [2022-02-24 02:55:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-24 02:55:00,812 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.019607843137255) internal successors, (206), 101 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 500 [2022-02-24 02:55:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:55:00,814 INFO L225 Difference]: With dead ends: 807 [2022-02-24 02:55:00,814 INFO L226 Difference]: Without dead ends: 509 [2022-02-24 02:55:00,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=304, Invalid=10202, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 02:55:00,815 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 407 mSDsluCounter, 9729 mSDsCounter, 0 mSdLazyCounter, 39244 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 9836 SdHoareTripleChecker+Invalid, 39499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 39244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:55:00,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 9836 Invalid, 39499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 39244 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-02-24 02:55:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-02-24 02:55:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 506. [2022-02-24 02:55:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 502 states have (on average 1.00398406374502) internal successors, (504), 502 states have internal predecessors, (504), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 507 transitions. [2022-02-24 02:55:00,832 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 507 transitions. Word has length 500 [2022-02-24 02:55:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:55:00,832 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 507 transitions. [2022-02-24 02:55:00,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.019607843137255) internal successors, (206), 101 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 507 transitions. [2022-02-24 02:55:00,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-02-24 02:55:00,835 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:55:00,835 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:55:00,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-24 02:55:00,835 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:55:00,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:55:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1482775679, now seen corresponding path program 99 times [2022-02-24 02:55:00,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:55:00,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818214221] [2022-02-24 02:55:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:55:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:55:00,844 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:55:00,844 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:55:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:55:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:55:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:55:05,273 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 02:55:05,273 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:55:05,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818214221] [2022-02-24 02:55:05,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [818214221] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:55:05,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:55:05,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-24 02:55:05,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276279869] [2022-02-24 02:55:05,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:55:05,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-24 02:55:05,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:55:05,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-24 02:55:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=10204, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 02:55:05,275 INFO L87 Difference]: Start difference. First operand 506 states and 507 transitions. Second operand has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 102 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:55:17,356 INFO L93 Difference]: Finished difference Result 815 states and 818 transitions. [2022-02-24 02:55:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-24 02:55:17,356 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 102 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 505 [2022-02-24 02:55:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:55:17,358 INFO L225 Difference]: With dead ends: 815 [2022-02-24 02:55:17,358 INFO L226 Difference]: Without dead ends: 514 [2022-02-24 02:55:17,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=307, Invalid=10405, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 02:55:17,359 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 394 mSDsluCounter, 9970 mSDsCounter, 0 mSdLazyCounter, 40066 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10078 SdHoareTripleChecker+Invalid, 40315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 40066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:55:17,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 10078 Invalid, 40315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [249 Valid, 40066 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-02-24 02:55:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-02-24 02:55:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 511. [2022-02-24 02:55:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 507 states have (on average 1.0039447731755424) internal successors, (509), 507 states have internal predecessors, (509), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 512 transitions. [2022-02-24 02:55:17,371 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 512 transitions. Word has length 505 [2022-02-24 02:55:17,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:55:17,371 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 512 transitions. [2022-02-24 02:55:17,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 102 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 512 transitions. [2022-02-24 02:55:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-02-24 02:55:17,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:55:17,373 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:55:17,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-24 02:55:17,373 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:55:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:55:17,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1608298024, now seen corresponding path program 100 times [2022-02-24 02:55:17,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:55:17,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109417949] [2022-02-24 02:55:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:55:17,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:55:17,381 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:55:17,382 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:55:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:55:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:55:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:55:28,446 INFO 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 02:55:28,446 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:55:28,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109417949] [2022-02-24 02:55:28,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [109417949] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:55:28,447 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:55:28,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-24 02:55:28,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034952795] [2022-02-24 02:55:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:55:28,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-24 02:55:28,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:55:28,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-24 02:55:28,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=10407, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 02:55:28,449 INFO L87 Difference]: Start difference. First operand 511 states and 512 transitions. Second operand has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:55:40,901 INFO L93 Difference]: Finished difference Result 823 states and 826 transitions. [2022-02-24 02:55:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-24 02:55:40,901 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 510 [2022-02-24 02:55:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:55:40,902 INFO L225 Difference]: With dead ends: 823 [2022-02-24 02:55:40,902 INFO L226 Difference]: Without dead ends: 519 [2022-02-24 02:55:40,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=310, Invalid=10610, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 02:55:40,904 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 339 mSDsluCounter, 10318 mSDsCounter, 0 mSdLazyCounter, 40959 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 10427 SdHoareTripleChecker+Invalid, 41181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 40959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:55:40,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 10427 Invalid, 41181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [222 Valid, 40959 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-02-24 02:55:40,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-02-24 02:55:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 516. [2022-02-24 02:55:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 512 states have (on average 1.00390625) internal successors, (514), 512 states have internal predecessors, (514), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 517 transitions. [2022-02-24 02:55:40,920 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 517 transitions. Word has length 510 [2022-02-24 02:55:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:55:40,921 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 517 transitions. [2022-02-24 02:55:40,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.019230769230769) internal successors, (210), 103 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:55:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 517 transitions. [2022-02-24 02:55:40,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-02-24 02:55:40,923 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:55:40,924 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:55:40,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-24 02:55:40,924 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:55:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:55:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash 684397213, now seen corresponding path program 101 times [2022-02-24 02:55:40,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:55:40,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809502127] [2022-02-24 02:55:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:55:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:55:40,933 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:55:40,933 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:55:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:55:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:55:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:55:51,986 INFO 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 02:55:51,986 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:55:51,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809502127] [2022-02-24 02:55:51,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1809502127] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:55:51,986 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:55:51,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-02-24 02:55:51,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440111254] [2022-02-24 02:55:51,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:55:51,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-24 02:55:51,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:55:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-24 02:55:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=10612, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 02:55:51,988 INFO L87 Difference]: Start difference. First operand 516 states and 517 transitions. Second operand has 105 states, 105 states have (on average 2.019047619047619) internal successors, (212), 104 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:56:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:56:04,566 INFO L93 Difference]: Finished difference Result 831 states and 834 transitions. [2022-02-24 02:56:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-24 02:56:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.019047619047619) internal successors, (212), 104 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 515 [2022-02-24 02:56:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:56:04,567 INFO L225 Difference]: With dead ends: 831 [2022-02-24 02:56:04,567 INFO L226 Difference]: Without dead ends: 524 [2022-02-24 02:56:04,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=313, Invalid=10817, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 02:56:04,569 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 388 mSDsluCounter, 10408 mSDsCounter, 0 mSdLazyCounter, 41704 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 10518 SdHoareTripleChecker+Invalid, 41951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 41704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:56:04,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 10518 Invalid, 41951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [247 Valid, 41704 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-02-24 02:56:04,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-02-24 02:56:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 521. [2022-02-24 02:56:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 517 states have (on average 1.0038684719535784) internal successors, (519), 517 states have internal predecessors, (519), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:56:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2022-02-24 02:56:04,580 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 515 [2022-02-24 02:56:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:56:04,580 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2022-02-24 02:56:04,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.019047619047619) internal successors, (212), 104 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:56:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2022-02-24 02:56:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-02-24 02:56:04,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:56:04,583 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:56:04,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-24 02:56:04,583 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:56:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:56:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2121831748, now seen corresponding path program 102 times [2022-02-24 02:56:04,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:56:04,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237789882] [2022-02-24 02:56:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:56:04,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:56:04,590 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:56:04,590 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:56:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:56:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:56:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:56:15,889 INFO 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 02:56:15,889 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:56:15,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237789882] [2022-02-24 02:56:15,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1237789882] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:56:15,889 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:56:15,889 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-02-24 02:56:15,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082632883] [2022-02-24 02:56:15,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:56:15,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-24 02:56:15,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:56:15,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-24 02:56:15,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=10819, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 02:56:15,892 INFO L87 Difference]: Start difference. First operand 521 states and 522 transitions. Second operand has 106 states, 106 states have (on average 2.018867924528302) internal successors, (214), 105 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:56:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:56:28,734 INFO L93 Difference]: Finished difference Result 839 states and 842 transitions. [2022-02-24 02:56:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-24 02:56:28,735 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.018867924528302) internal successors, (214), 105 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 520 [2022-02-24 02:56:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:56:28,736 INFO L225 Difference]: With dead ends: 839 [2022-02-24 02:56:28,736 INFO L226 Difference]: Without dead ends: 529 [2022-02-24 02:56:28,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=316, Invalid=11026, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 02:56:28,737 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 419 mSDsluCounter, 10545 mSDsCounter, 0 mSdLazyCounter, 42484 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 10656 SdHoareTripleChecker+Invalid, 42747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 42484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:56:28,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 10656 Invalid, 42747 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [263 Valid, 42484 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-02-24 02:56:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-02-24 02:56:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 526. [2022-02-24 02:56:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 522 states have (on average 1.003831417624521) internal successors, (524), 522 states have internal predecessors, (524), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:56:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 527 transitions. [2022-02-24 02:56:28,755 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 527 transitions. Word has length 520 [2022-02-24 02:56:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:56:28,755 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 527 transitions. [2022-02-24 02:56:28,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.018867924528302) internal successors, (214), 105 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 02:56:28,756 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 527 transitions. [2022-02-24 02:56:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-02-24 02:56:28,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:56:28,758 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:56:28,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-24 02:56:28,759 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:56:28,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:56:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2048269895, now seen corresponding path program 103 times [2022-02-24 02:56:28,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:56:28,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033220647] [2022-02-24 02:56:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:56:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:56:28,768 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 02:56:28,768 INFO L281 tedInterpolationCore]: Could not accelerate.