/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 02:18:09,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 02:18:09,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 02:18:09,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 02:18:09,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 02:18:09,612 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 02:18:09,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 02:18:09,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 02:18:09,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 02:18:09,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 02:18:09,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 02:18:09,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 02:18:09,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 02:18:09,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 02:18:09,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 02:18:09,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 02:18:09,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 02:18:09,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 02:18:09,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:18:09,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 02:18:09,616 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 02:18:09,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 02:18:09,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 02:18:09,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 02:18:09,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 02:18:09,848 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 02:18:09,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_4.c [2022-02-15 02:18:09,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c141c1bf/8834611f97b6438fa9f1b0091e10e4a7/FLAGea7e99353 [2022-02-15 02:18:10,242 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 02:18:10,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_4.c [2022-02-15 02:18:10,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c141c1bf/8834611f97b6438fa9f1b0091e10e4a7/FLAGea7e99353 [2022-02-15 02:18:10,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c141c1bf/8834611f97b6438fa9f1b0091e10e4a7 [2022-02-15 02:18:10,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 02:18:10,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 02:18:10,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 02:18:10,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 02:18:10,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 02:18:10,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68322a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10, skipping insertion in model container [2022-02-15 02:18:10,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 02:18:10,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 02:18:10,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_4.c[841,854] [2022-02-15 02:18:10,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:18:10,415 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 02:18:10,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_4.c[841,854] [2022-02-15 02:18:10,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:18:10,434 INFO L208 MainTranslator]: Completed translation [2022-02-15 02:18:10,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10 WrapperNode [2022-02-15 02:18:10,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 02:18:10,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 02:18:10,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 02:18:10,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 02:18:10,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 02:18:10,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 02:18:10,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 02:18:10,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 02:18:10,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (1/1) ... [2022-02-15 02:18:10,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:18:10,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 02:18:10,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 02:18:10,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 02:18:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 02:18:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 02:18:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 02:18:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 02:18:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 02:18:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 02:18:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 02:18:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 02:18:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 02:18:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 02:18:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 02:18:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 02:18:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 02:18:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 02:18:10,581 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 02:18:10,582 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 02:18:10,655 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 02:18:10,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 02:18:10,659 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-15 02:18:10,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:18:10 BoogieIcfgContainer [2022-02-15 02:18:10,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 02:18:10,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 02:18:10,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 02:18:10,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 02:18:10,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:18:10" (1/3) ... [2022-02-15 02:18:10,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632819aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:18:10, skipping insertion in model container [2022-02-15 02:18:10,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:18:10" (2/3) ... [2022-02-15 02:18:10,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632819aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:18:10, skipping insertion in model container [2022-02-15 02:18:10,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:18:10" (3/3) ... [2022-02-15 02:18:10,680 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_4.c [2022-02-15 02:18:10,684 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 02:18:10,684 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 02:18:10,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 02:18:10,738 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=JORDAN [2022-02-15 02:18:10,738 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 02:18:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 02:18:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-15 02:18:10,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:10,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:10,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1467912619, now seen corresponding path program 1 times [2022-02-15 02:18:10,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:10,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180519832] [2022-02-15 02:18:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:10,843 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:10,961 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:10,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180519832] [2022-02-15 02:18:10,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1180519832] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:10,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:10,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 02:18:10,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307372887] [2022-02-15 02:18:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:10,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 02:18:10,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:10,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 02:18:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 02:18:10,997 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:11,041 INFO L93 Difference]: Finished difference Result 38 states and 54 transitions. [2022-02-15 02:18:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 02:18:11,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 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 9 [2022-02-15 02:18:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:11,055 INFO L225 Difference]: With dead ends: 38 [2022-02-15 02:18:11,055 INFO L226 Difference]: Without dead ends: 17 [2022-02-15 02:18:11,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 02:18:11,062 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:11,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:18:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-15 02:18:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-15 02:18:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-02-15 02:18:11,096 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2022-02-15 02:18:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:11,097 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-02-15 02:18:11,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-02-15 02:18:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-15 02:18:11,098 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:11,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:11,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 02:18:11,099 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1467952981, now seen corresponding path program 1 times [2022-02-15 02:18:11,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:11,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273767647] [2022-02-15 02:18:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:11,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:11,105 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:11,193 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:11,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273767647] [2022-02-15 02:18:11,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [273767647] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:11,194 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:11,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:18:11,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070539047] [2022-02-15 02:18:11,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:11,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:18:11,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:18:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:18:11,197 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:11,247 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2022-02-15 02:18:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:18:11,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 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 9 [2022-02-15 02:18:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:11,249 INFO L225 Difference]: With dead ends: 28 [2022-02-15 02:18:11,249 INFO L226 Difference]: Without dead ends: 25 [2022-02-15 02:18:11,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:18:11,253 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:11,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 25 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:18:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-15 02:18:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2022-02-15 02:18:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-02-15 02:18:11,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 9 [2022-02-15 02:18:11,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:11,274 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-02-15 02:18:11,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-02-15 02:18:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-15 02:18:11,275 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:11,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:11,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 02:18:11,275 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:11,276 INFO L85 PathProgramCache]: Analyzing trace with hash -408278750, now seen corresponding path program 1 times [2022-02-15 02:18:11,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:11,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953969809] [2022-02-15 02:18:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:11,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:11,320 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:11,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:11,396 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:11,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953969809] [2022-02-15 02:18:11,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1953969809] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:11,398 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:11,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 02:18:11,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184781908] [2022-02-15 02:18:11,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:11,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 02:18:11,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 02:18:11,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:18:11,400 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:11,483 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2022-02-15 02:18:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 02:18:11,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 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 12 [2022-02-15 02:18:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:11,484 INFO L225 Difference]: With dead ends: 42 [2022-02-15 02:18:11,485 INFO L226 Difference]: Without dead ends: 31 [2022-02-15 02:18:11,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 02:18:11,490 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 56 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:11,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 23 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-15 02:18:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2022-02-15 02:18:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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) [2022-02-15 02:18:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-02-15 02:18:11,495 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2022-02-15 02:18:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:11,495 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-02-15 02:18:11,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-02-15 02:18:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 02:18:11,496 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:11,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:11,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 02:18:11,496 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash 675904015, now seen corresponding path program 1 times [2022-02-15 02:18:11,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:11,497 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891082788] [2022-02-15 02:18:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:11,510 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:11,551 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:11,551 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:11,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:11,628 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:11,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891082788] [2022-02-15 02:18:11,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [891082788] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:11,629 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:11,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 02:18:11,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733161616] [2022-02-15 02:18:11,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:11,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 02:18:11,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 02:18:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 02:18:11,630 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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) [2022-02-15 02:18:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:11,712 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-02-15 02:18:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 02:18:11,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 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 [2022-02-15 02:18:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:11,716 INFO L225 Difference]: With dead ends: 46 [2022-02-15 02:18:11,716 INFO L226 Difference]: Without dead ends: 35 [2022-02-15 02:18:11,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-15 02:18:11,722 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:11,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 21 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:18:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-15 02:18:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2022-02-15 02:18:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-02-15 02:18:11,731 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2022-02-15 02:18:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:11,732 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-02-15 02:18:11,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-02-15 02:18:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 02:18:11,733 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:11,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:11,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 02:18:11,733 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 919301982, now seen corresponding path program 1 times [2022-02-15 02:18:11,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:11,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041861626] [2022-02-15 02:18:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:11,756 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:11,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 5 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:11,787 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:11,830 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:11,831 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:11,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:11,916 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:11,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041861626] [2022-02-15 02:18:11,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2041861626] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:11,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:11,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 02:18:11,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417611682] [2022-02-15 02:18:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:11,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 02:18:11,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 02:18:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-15 02:18:11,917 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:12,013 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-02-15 02:18:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 02:18:12,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 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 18 [2022-02-15 02:18:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:12,015 INFO L225 Difference]: With dead ends: 48 [2022-02-15 02:18:12,015 INFO L226 Difference]: Without dead ends: 37 [2022-02-15 02:18:12,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-02-15 02:18:12,017 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 76 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:12,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 19 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:18:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-15 02:18:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2022-02-15 02:18:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-02-15 02:18:12,033 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 18 [2022-02-15 02:18:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:12,033 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-02-15 02:18:12,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-02-15 02:18:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 02:18:12,034 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:12,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:12,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 02:18:12,034 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1380235844, now seen corresponding path program 1 times [2022-02-15 02:18:12,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:12,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729764928] [2022-02-15 02:18:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:12,091 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,128 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,164 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,195 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,196 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:12,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:12,260 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:12,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729764928] [2022-02-15 02:18:12,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [729764928] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:12,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:12,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 02:18:12,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045925229] [2022-02-15 02:18:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:12,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 02:18:12,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 02:18:12,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 02:18:12,262 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:12,363 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-02-15 02:18:12,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 02:18:12,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 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 [2022-02-15 02:18:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:12,364 INFO L225 Difference]: With dead ends: 50 [2022-02-15 02:18:12,364 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 02:18:12,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-02-15 02:18:12,365 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:12,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 24 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:18:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 02:18:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2022-02-15 02:18:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-02-15 02:18:12,370 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 20 [2022-02-15 02:18:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:12,370 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-02-15 02:18:12,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-02-15 02:18:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 02:18:12,371 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:12,371 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:12,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 02:18:12,371 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:12,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:12,371 INFO L85 PathProgramCache]: Analyzing trace with hash 672070810, now seen corresponding path program 2 times [2022-02-15 02:18:12,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:12,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483093332] [2022-02-15 02:18:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:12,436 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,478 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,515 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,544 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,544 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:12,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:12,614 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:12,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483093332] [2022-02-15 02:18:12,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [483093332] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:12,615 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:12,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 02:18:12,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642828479] [2022-02-15 02:18:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:12,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 02:18:12,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 02:18:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-15 02:18:12,616 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:12,733 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2022-02-15 02:18:12,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 02:18:12,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-15 02:18:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:12,734 INFO L225 Difference]: With dead ends: 52 [2022-02-15 02:18:12,734 INFO L226 Difference]: Without dead ends: 41 [2022-02-15 02:18:12,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-02-15 02:18:12,734 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 85 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:12,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 19 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-15 02:18:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2022-02-15 02:18:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-02-15 02:18:12,739 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 22 [2022-02-15 02:18:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:12,739 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-02-15 02:18:12,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-02-15 02:18:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 02:18:12,740 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:12,740 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:12,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 02:18:12,740 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:12,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1548776440, now seen corresponding path program 3 times [2022-02-15 02:18:12,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:12,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668391917] [2022-02-15 02:18:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:12,782 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,813 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,841 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,868 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:12,868 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:12,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:12,967 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:12,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668391917] [2022-02-15 02:18:12,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1668391917] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:12,967 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:12,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 02:18:12,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458583043] [2022-02-15 02:18:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:12,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 02:18:12,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:12,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 02:18:12,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-15 02:18:12,969 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:13,077 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2022-02-15 02:18:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 02:18:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-02-15 02:18:13,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:13,078 INFO L225 Difference]: With dead ends: 54 [2022-02-15 02:18:13,078 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 02:18:13,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:18:13,078 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 89 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:13,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 24 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:13,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 02:18:13,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-02-15 02:18:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-02-15 02:18:13,086 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 24 [2022-02-15 02:18:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:13,087 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-02-15 02:18:13,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-02-15 02:18:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 02:18:13,087 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:13,087 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:13,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 02:18:13,087 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2045670442, now seen corresponding path program 4 times [2022-02-15 02:18:13,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:13,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479553641] [2022-02-15 02:18:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:13,129 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:13,158 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:13,204 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:13,231 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:13,231 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:13,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:13,335 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:13,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479553641] [2022-02-15 02:18:13,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [479553641] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:13,335 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:13,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 02:18:13,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015021810] [2022-02-15 02:18:13,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:13,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 02:18:13,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 02:18:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-02-15 02:18:13,336 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:13,482 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2022-02-15 02:18:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 02:18:13,482 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-02-15 02:18:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:13,484 INFO L225 Difference]: With dead ends: 56 [2022-02-15 02:18:13,484 INFO L226 Difference]: Without dead ends: 45 [2022-02-15 02:18:13,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-02-15 02:18:13,485 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:13,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 34 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-15 02:18:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2022-02-15 02:18:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.16) internal successors, (29), 25 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) [2022-02-15 02:18:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-02-15 02:18:13,494 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 26 [2022-02-15 02:18:13,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:13,495 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-02-15 02:18:13,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:13,495 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-02-15 02:18:13,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 02:18:13,495 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:13,495 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:13,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 02:18:13,496 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:13,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1139549236, now seen corresponding path program 5 times [2022-02-15 02:18:13,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:13,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231886713] [2022-02-15 02:18:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:13,533 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:13,560 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:13,589 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:13,613 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:13,613 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:13,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:13,740 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:13,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231886713] [2022-02-15 02:18:13,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [231886713] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:13,740 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:13,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 02:18:13,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780667487] [2022-02-15 02:18:13,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:13,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 02:18:13,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:13,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 02:18:13,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-02-15 02:18:13,741 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:13,901 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-02-15 02:18:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 02:18:13,901 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-02-15 02:18:13,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:13,902 INFO L225 Difference]: With dead ends: 58 [2022-02-15 02:18:13,902 INFO L226 Difference]: Without dead ends: 47 [2022-02-15 02:18:13,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:18:13,903 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:13,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 34 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-15 02:18:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2022-02-15 02:18:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-15 02:18:13,914 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 28 [2022-02-15 02:18:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:13,914 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-15 02:18:13,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-15 02:18:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 02:18:13,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:13,915 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:13,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 02:18:13,915 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:13,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash -176022254, now seen corresponding path program 6 times [2022-02-15 02:18:13,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:13,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155713161] [2022-02-15 02:18:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:14,007 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,036 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,067 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,092 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,093 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:14,258 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:14,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155713161] [2022-02-15 02:18:14,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [155713161] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:14,259 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:14,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 02:18:14,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252849602] [2022-02-15 02:18:14,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:14,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 02:18:14,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 02:18:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-02-15 02:18:14,260 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:14,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:14,504 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-02-15 02:18:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 02:18:14,505 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-15 02:18:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:14,505 INFO L225 Difference]: With dead ends: 58 [2022-02-15 02:18:14,505 INFO L226 Difference]: Without dead ends: 47 [2022-02-15 02:18:14,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:18:14,506 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:14,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 48 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-15 02:18:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2022-02-15 02:18:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-02-15 02:18:14,513 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 30 [2022-02-15 02:18:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:14,513 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-02-15 02:18:14,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:14,513 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-02-15 02:18:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 02:18:14,513 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:14,513 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:14,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 02:18:14,514 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:14,514 INFO L85 PathProgramCache]: Analyzing trace with hash 145574267, now seen corresponding path program 7 times [2022-02-15 02:18:14,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:14,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421824345] [2022-02-15 02:18:14,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:14,608 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,645 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,692 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,717 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:14,717 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:14,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:14,856 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:14,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421824345] [2022-02-15 02:18:14,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1421824345] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:14,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:14,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 02:18:14,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431005411] [2022-02-15 02:18:14,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:14,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 02:18:14,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:14,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 02:18:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-15 02:18:14,858 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 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) [2022-02-15 02:18:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:15,092 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-02-15 02:18:15,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 02:18:15,093 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 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 33 [2022-02-15 02:18:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:15,093 INFO L225 Difference]: With dead ends: 60 [2022-02-15 02:18:15,093 INFO L226 Difference]: Without dead ends: 49 [2022-02-15 02:18:15,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:18:15,094 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:15,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 23 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-15 02:18:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2022-02-15 02:18:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-02-15 02:18:15,101 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 33 [2022-02-15 02:18:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:15,101 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-02-15 02:18:15,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-02-15 02:18:15,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 02:18:15,102 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:15,102 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:15,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 02:18:15,102 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:15,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:15,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1903227751, now seen corresponding path program 8 times [2022-02-15 02:18:15,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:15,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789017288] [2022-02-15 02:18:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:15,222 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,261 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,291 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,319 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,362 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,407 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,455 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:15,456 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:15,648 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:15,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789017288] [2022-02-15 02:18:15,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1789017288] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:15,649 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:15,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 02:18:15,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320553064] [2022-02-15 02:18:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:15,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 02:18:15,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:15,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 02:18:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-02-15 02:18:15,650 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 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) [2022-02-15 02:18:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:15,900 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-02-15 02:18:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:18:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (2), 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 [2022-02-15 02:18:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:15,900 INFO L225 Difference]: With dead ends: 62 [2022-02-15 02:18:15,900 INFO L226 Difference]: Without dead ends: 51 [2022-02-15 02:18:15,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:18:15,901 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 86 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:15,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 18 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-15 02:18:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2022-02-15 02:18:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-02-15 02:18:15,908 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 35 [2022-02-15 02:18:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:15,908 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-02-15 02:18:15,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-02-15 02:18:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 02:18:15,908 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:15,909 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:15,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 02:18:15,909 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:15,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash 588021815, now seen corresponding path program 9 times [2022-02-15 02:18:15,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:15,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449348517] [2022-02-15 02:18:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:16,068 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,114 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,145 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,192 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,221 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,269 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,301 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,301 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:16,479 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:16,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449348517] [2022-02-15 02:18:16,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1449348517] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:16,479 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:16,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:18:16,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787847059] [2022-02-15 02:18:16,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:16,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:18:16,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:18:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:18:16,480 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2022-02-15 02:18:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:16,761 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2022-02-15 02:18:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:18:16,761 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 1 states have call successors, (2), 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 37 [2022-02-15 02:18:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:16,762 INFO L225 Difference]: With dead ends: 64 [2022-02-15 02:18:16,762 INFO L226 Difference]: Without dead ends: 53 [2022-02-15 02:18:16,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:18:16,762 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:16,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 48 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-15 02:18:16,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2022-02-15 02:18:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-02-15 02:18:16,770 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2022-02-15 02:18:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:16,770 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-02-15 02:18:16,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-02-15 02:18:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 02:18:16,770 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:16,770 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:16,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 02:18:16,770 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:16,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1912896427, now seen corresponding path program 10 times [2022-02-15 02:18:16,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:16,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372434632] [2022-02-15 02:18:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:16,902 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,946 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:16,976 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,019 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,047 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,092 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,118 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,118 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:17,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:17,315 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:17,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372434632] [2022-02-15 02:18:17,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [372434632] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:17,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:17,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 02:18:17,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977466291] [2022-02-15 02:18:17,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:17,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 02:18:17,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:17,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 02:18:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-02-15 02:18:17,317 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 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) [2022-02-15 02:18:17,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:17,625 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-02-15 02:18:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 02:18:17,625 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 1 states have call successors, (2), 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 39 [2022-02-15 02:18:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:17,626 INFO L225 Difference]: With dead ends: 66 [2022-02-15 02:18:17,626 INFO L226 Difference]: Without dead ends: 55 [2022-02-15 02:18:17,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:18:17,627 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 83 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:17,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 38 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-15 02:18:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2022-02-15 02:18:17,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-02-15 02:18:17,635 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2022-02-15 02:18:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:17,635 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-02-15 02:18:17,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-02-15 02:18:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 02:18:17,636 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:17,636 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:17,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 02:18:17,636 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash -113641229, now seen corresponding path program 11 times [2022-02-15 02:18:17,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:17,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083008017] [2022-02-15 02:18:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:17,773 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,812 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,851 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,895 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,925 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:17,968 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,002 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,003 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:18,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:18,234 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:18,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083008017] [2022-02-15 02:18:18,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1083008017] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:18,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:18,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 02:18:18,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673571432] [2022-02-15 02:18:18,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:18,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 02:18:18,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 02:18:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-02-15 02:18:18,236 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 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) [2022-02-15 02:18:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:18,558 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2022-02-15 02:18:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 02:18:18,559 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 1 states have call successors, (2), 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 41 [2022-02-15 02:18:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:18,559 INFO L225 Difference]: With dead ends: 68 [2022-02-15 02:18:18,559 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 02:18:18,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:18:18,560 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 84 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:18,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 28 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 02:18:18,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2022-02-15 02:18:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.1) internal successors, (44), 40 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) [2022-02-15 02:18:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-02-15 02:18:18,568 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 41 [2022-02-15 02:18:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:18,569 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-02-15 02:18:18,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-02-15 02:18:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-15 02:18:18,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:18,569 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:18,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 02:18:18,569 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1901216239, now seen corresponding path program 12 times [2022-02-15 02:18:18,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:18,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25192137] [2022-02-15 02:18:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:18,684 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,731 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,766 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,818 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,846 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,887 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,915 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:18,915 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:19,130 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:19,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25192137] [2022-02-15 02:18:19,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [25192137] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:19,131 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:19,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 02:18:19,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107143992] [2022-02-15 02:18:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:19,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 02:18:19,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 02:18:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-15 02:18:19,132 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 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) [2022-02-15 02:18:19,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:19,528 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2022-02-15 02:18:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 02:18:19,528 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 1 states have call successors, (2), 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 43 [2022-02-15 02:18:19,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:19,529 INFO L225 Difference]: With dead ends: 72 [2022-02-15 02:18:19,529 INFO L226 Difference]: Without dead ends: 61 [2022-02-15 02:18:19,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:18:19,530 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 99 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:19,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 88 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-15 02:18:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2022-02-15 02:18:19,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-02-15 02:18:19,539 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 43 [2022-02-15 02:18:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:19,540 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-02-15 02:18:19,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:19,540 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-02-15 02:18:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 02:18:19,540 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:19,540 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:19,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 02:18:19,540 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:19,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1773882449, now seen corresponding path program 13 times [2022-02-15 02:18:19,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:19,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644577529] [2022-02-15 02:18:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:19,648 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,683 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,722 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,759 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,787 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,826 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,853 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:19,853 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:19,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:20,114 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:20,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644577529] [2022-02-15 02:18:20,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1644577529] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:20,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:20,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 02:18:20,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549355572] [2022-02-15 02:18:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:20,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 02:18:20,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 02:18:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:18:20,116 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 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) [2022-02-15 02:18:20,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:20,507 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2022-02-15 02:18:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 02:18:20,507 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (2), 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 [2022-02-15 02:18:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:20,508 INFO L225 Difference]: With dead ends: 73 [2022-02-15 02:18:20,508 INFO L226 Difference]: Without dead ends: 62 [2022-02-15 02:18:20,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:18:20,508 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 109 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:20,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 53 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-15 02:18:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2022-02-15 02:18:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2022-02-15 02:18:20,520 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 45 [2022-02-15 02:18:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:20,520 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2022-02-15 02:18:20,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2022-02-15 02:18:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 02:18:20,520 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:20,520 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:20,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 02:18:20,520 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash -584953410, now seen corresponding path program 14 times [2022-02-15 02:18:20,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:20,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106863412] [2022-02-15 02:18:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:20,631 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,665 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,712 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,749 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,782 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,817 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,841 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:20,841 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:20,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:21,100 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:21,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106863412] [2022-02-15 02:18:21,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1106863412] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:21,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:21,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 02:18:21,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246247029] [2022-02-15 02:18:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:21,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 02:18:21,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 02:18:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-02-15 02:18:21,102 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:21,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:21,506 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2022-02-15 02:18:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:18:21,506 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 1 states have call successors, (2), 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 48 [2022-02-15 02:18:21,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:21,507 INFO L225 Difference]: With dead ends: 75 [2022-02-15 02:18:21,507 INFO L226 Difference]: Without dead ends: 64 [2022-02-15 02:18:21,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=1397, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:18:21,508 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:21,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 58 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-15 02:18:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-02-15 02:18:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-02-15 02:18:21,518 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 48 [2022-02-15 02:18:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:21,518 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-02-15 02:18:21,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-02-15 02:18:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 02:18:21,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:21,519 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:21,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 02:18:21,519 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:21,519 INFO L85 PathProgramCache]: Analyzing trace with hash 434311196, now seen corresponding path program 15 times [2022-02-15 02:18:21,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:21,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204541250] [2022-02-15 02:18:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:21,639 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,679 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,712 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,737 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,782 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,820 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,843 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:21,843 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:21,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:22,159 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:22,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204541250] [2022-02-15 02:18:22,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [204541250] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:22,159 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:22,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 02:18:22,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976130219] [2022-02-15 02:18:22,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:22,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 02:18:22,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:22,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 02:18:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-02-15 02:18:22,160 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:22,620 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2022-02-15 02:18:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 02:18:22,620 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 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 [2022-02-15 02:18:22,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:22,621 INFO L225 Difference]: With dead ends: 77 [2022-02-15 02:18:22,621 INFO L226 Difference]: Without dead ends: 66 [2022-02-15 02:18:22,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:18:22,622 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 107 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:22,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 23 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-02-15 02:18:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2022-02-15 02:18:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-02-15 02:18:22,633 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 50 [2022-02-15 02:18:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:22,633 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-02-15 02:18:22,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:22,634 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-02-15 02:18:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 02:18:22,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:22,634 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:22,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 02:18:22,634 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:22,634 INFO L85 PathProgramCache]: Analyzing trace with hash 695054074, now seen corresponding path program 16 times [2022-02-15 02:18:22,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:22,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374233562] [2022-02-15 02:18:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:22,767 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,808 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,845 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,884 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,918 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,961 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,987 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:22,987 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:22,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:23,295 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:23,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374233562] [2022-02-15 02:18:23,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [374233562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:23,295 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:23,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:18:23,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082558830] [2022-02-15 02:18:23,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:23,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:18:23,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:23,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:18:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:18:23,297 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:23,791 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2022-02-15 02:18:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:18:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 1 states have call successors, (2), 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 52 [2022-02-15 02:18:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:23,792 INFO L225 Difference]: With dead ends: 79 [2022-02-15 02:18:23,792 INFO L226 Difference]: Without dead ends: 68 [2022-02-15 02:18:23,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=1713, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:18:23,793 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 86 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:23,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 83 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-15 02:18:23,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2022-02-15 02:18:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-02-15 02:18:23,805 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 52 [2022-02-15 02:18:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:23,805 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-02-15 02:18:23,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-02-15 02:18:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 02:18:23,806 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:23,806 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:23,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 02:18:23,806 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:23,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:23,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2134110632, now seen corresponding path program 17 times [2022-02-15 02:18:23,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:23,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266765288] [2022-02-15 02:18:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:23,914 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,960 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:23,991 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,044 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,095 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,133 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,155 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:24,156 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:24,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:24,513 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:24,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266765288] [2022-02-15 02:18:24,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [266765288] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:24,513 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:24,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:18:24,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36151911] [2022-02-15 02:18:24,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:24,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:18:24,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:18:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:18:24,515 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:25,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:25,010 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2022-02-15 02:18:25,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:18:25,012 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 1 states have call successors, (2), 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 54 [2022-02-15 02:18:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:25,012 INFO L225 Difference]: With dead ends: 81 [2022-02-15 02:18:25,012 INFO L226 Difference]: Without dead ends: 70 [2022-02-15 02:18:25,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=1883, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:18:25,013 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 96 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:25,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 23 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 02:18:25,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-15 02:18:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2022-02-15 02:18:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-02-15 02:18:25,026 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 54 [2022-02-15 02:18:25,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:25,026 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-02-15 02:18:25,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-02-15 02:18:25,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 02:18:25,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:25,027 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:25,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 02:18:25,027 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:25,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:25,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2047872566, now seen corresponding path program 18 times [2022-02-15 02:18:25,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:25,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889253122] [2022-02-15 02:18:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:25,147 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,190 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,216 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,260 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,287 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,351 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,373 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:25,373 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:25,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:25,690 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:25,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889253122] [2022-02-15 02:18:25,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1889253122] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:25,690 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:25,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 02:18:25,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445202169] [2022-02-15 02:18:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:25,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 02:18:25,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:25,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 02:18:25,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:18:25,691 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:26,306 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2022-02-15 02:18:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 02:18:26,306 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 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 56 [2022-02-15 02:18:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:26,307 INFO L225 Difference]: With dead ends: 83 [2022-02-15 02:18:26,307 INFO L226 Difference]: Without dead ends: 72 [2022-02-15 02:18:26,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=2061, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 02:18:26,308 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 98 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:26,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 28 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:18:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-15 02:18:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2022-02-15 02:18:26,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 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) [2022-02-15 02:18:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2022-02-15 02:18:26,322 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 56 [2022-02-15 02:18:26,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:26,322 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2022-02-15 02:18:26,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2022-02-15 02:18:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 02:18:26,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:26,322 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:26,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 02:18:26,323 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:26,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 844336788, now seen corresponding path program 19 times [2022-02-15 02:18:26,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:26,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630828617] [2022-02-15 02:18:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:26,433 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,473 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,500 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,539 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,581 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,620 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,642 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:26,642 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:27,047 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:27,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630828617] [2022-02-15 02:18:27,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [630828617] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:27,047 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:27,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 02:18:27,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100013416] [2022-02-15 02:18:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:27,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 02:18:27,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 02:18:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:18:27,048 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:27,638 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2022-02-15 02:18:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 02:18:27,639 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 1 states have call successors, (2), 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 58 [2022-02-15 02:18:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:27,639 INFO L225 Difference]: With dead ends: 87 [2022-02-15 02:18:27,639 INFO L226 Difference]: Without dead ends: 76 [2022-02-15 02:18:27,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=303, Invalid=2247, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:18:27,640 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 122 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:27,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 18 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:18:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-15 02:18:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2022-02-15 02:18:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2022-02-15 02:18:27,656 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 58 [2022-02-15 02:18:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:27,656 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2022-02-15 02:18:27,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2022-02-15 02:18:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 02:18:27,657 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:27,657 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:27,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 02:18:27,657 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:27,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash -407343246, now seen corresponding path program 20 times [2022-02-15 02:18:27,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:27,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782652115] [2022-02-15 02:18:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:27,785 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,829 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,856 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,895 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,947 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:27,983 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:28,015 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:28,015 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:28,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:28,486 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:28,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782652115] [2022-02-15 02:18:28,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [782652115] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:28,486 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:28,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 02:18:28,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458134941] [2022-02-15 02:18:28,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:28,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 02:18:28,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:28,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 02:18:28,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-02-15 02:18:28,487 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:29,073 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2022-02-15 02:18:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 02:18:29,074 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 1 states have call successors, (2), 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 [2022-02-15 02:18:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:29,074 INFO L225 Difference]: With dead ends: 88 [2022-02-15 02:18:29,074 INFO L226 Difference]: Without dead ends: 77 [2022-02-15 02:18:29,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 21 SyntacticMatches, 14 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=2441, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:18:29,076 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 101 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:29,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 23 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:18:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-15 02:18:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2022-02-15 02:18:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2022-02-15 02:18:29,093 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 60 [2022-02-15 02:18:29,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:29,093 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2022-02-15 02:18:29,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2022-02-15 02:18:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 02:18:29,094 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:29,094 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:29,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 02:18:29,094 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:29,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2010555621, now seen corresponding path program 21 times [2022-02-15 02:18:29,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:29,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405906549] [2022-02-15 02:18:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:29,197 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,245 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,282 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,332 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,357 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,407 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,431 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:29,431 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:29,867 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:29,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405906549] [2022-02-15 02:18:29,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [405906549] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:29,867 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:29,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 02:18:29,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848805297] [2022-02-15 02:18:29,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:29,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 02:18:29,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:29,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 02:18:29,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:18:29,868 INFO L87 Difference]: Start difference. First operand 65 states and 68 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) [2022-02-15 02:18:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:30,510 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2022-02-15 02:18:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:18:30,510 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 63 [2022-02-15 02:18:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:30,511 INFO L225 Difference]: With dead ends: 90 [2022-02-15 02:18:30,511 INFO L226 Difference]: Without dead ends: 79 [2022-02-15 02:18:30,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=327, Invalid=2643, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:18:30,512 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:30,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 43 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:18:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-15 02:18:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2022-02-15 02:18:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2022-02-15 02:18:30,529 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 63 [2022-02-15 02:18:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:30,529 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2022-02-15 02:18:30,529 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) [2022-02-15 02:18:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2022-02-15 02:18:30,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 02:18:30,530 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:30,530 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:30,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 02:18:30,530 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash 525153849, now seen corresponding path program 22 times [2022-02-15 02:18:30,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:30,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885383779] [2022-02-15 02:18:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:30,648 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,686 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,735 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,758 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,798 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,828 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,857 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:30,857 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:30,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:31,397 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:31,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885383779] [2022-02-15 02:18:31,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [885383779] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:31,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:31,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 02:18:31,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307047077] [2022-02-15 02:18:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:31,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 02:18:31,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 02:18:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-02-15 02:18:31,398 INFO L87 Difference]: Start difference. First operand 66 states and 69 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) [2022-02-15 02:18:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:32,130 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2022-02-15 02:18:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 02:18:32,131 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 65 [2022-02-15 02:18:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:32,131 INFO L225 Difference]: With dead ends: 92 [2022-02-15 02:18:32,131 INFO L226 Difference]: Without dead ends: 81 [2022-02-15 02:18:32,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 20 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=339, Invalid=2853, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:18:32,132 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 137 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:32,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 48 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:18:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-15 02:18:32,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2022-02-15 02:18:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2022-02-15 02:18:32,150 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 65 [2022-02-15 02:18:32,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:32,151 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2022-02-15 02:18:32,151 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) [2022-02-15 02:18:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2022-02-15 02:18:32,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 02:18:32,151 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:32,151 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:32,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 02:18:32,151 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:32,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2095497687, now seen corresponding path program 23 times [2022-02-15 02:18:32,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:32,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235603658] [2022-02-15 02:18:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:32,268 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,311 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,339 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,409 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,450 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,474 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:32,474 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:32,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:33,048 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:33,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235603658] [2022-02-15 02:18:33,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1235603658] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:33,049 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:33,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:18:33,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894247153] [2022-02-15 02:18:33,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:33,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:18:33,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:33,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:18:33,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:18:33,050 INFO L87 Difference]: Start difference. First operand 68 states and 71 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) [2022-02-15 02:18:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:33,786 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2022-02-15 02:18:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:18:33,786 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 67 [2022-02-15 02:18:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:33,787 INFO L225 Difference]: With dead ends: 94 [2022-02-15 02:18:33,787 INFO L226 Difference]: Without dead ends: 83 [2022-02-15 02:18:33,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 18 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=351, Invalid=3071, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:18:33,788 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 132 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:33,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 18 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 02:18:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-02-15 02:18:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2022-02-15 02:18:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2022-02-15 02:18:33,807 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 67 [2022-02-15 02:18:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:33,807 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2022-02-15 02:18:33,807 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) [2022-02-15 02:18:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2022-02-15 02:18:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 02:18:33,807 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:33,808 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:33,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 02:18:33,808 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash -632562187, now seen corresponding path program 24 times [2022-02-15 02:18:33,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:33,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391242025] [2022-02-15 02:18:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:33,909 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,950 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:33,977 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:34,022 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:34,048 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:34,091 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:34,121 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:34,121 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:34,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:34,680 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:34,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391242025] [2022-02-15 02:18:34,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1391242025] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:34,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:34,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:18:34,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027762276] [2022-02-15 02:18:34,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:34,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:18:34,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:34,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:18:34,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:18:34,681 INFO L87 Difference]: Start difference. First operand 70 states and 73 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) [2022-02-15 02:18:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:35,551 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2022-02-15 02:18:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:18:35,551 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 69 [2022-02-15 02:18:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:35,552 INFO L225 Difference]: With dead ends: 96 [2022-02-15 02:18:35,552 INFO L226 Difference]: Without dead ends: 85 [2022-02-15 02:18:35,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 27 SyntacticMatches, 13 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=363, Invalid=3297, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:18:35,553 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 135 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:35,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 48 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:18:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-15 02:18:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2022-02-15 02:18:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2022-02-15 02:18:35,573 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 69 [2022-02-15 02:18:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:35,573 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2022-02-15 02:18:35,573 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) [2022-02-15 02:18:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2022-02-15 02:18:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 02:18:35,574 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:35,574 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:35,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 02:18:35,574 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:35,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:35,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1926916755, now seen corresponding path program 25 times [2022-02-15 02:18:35,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:35,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084591762] [2022-02-15 02:18:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:35,686 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,726 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,767 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,807 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,833 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,875 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,898 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:35,898 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:35,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:36,447 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:36,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084591762] [2022-02-15 02:18:36,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2084591762] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:36,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:36,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:18:36,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002874461] [2022-02-15 02:18:36,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:36,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:18:36,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:18:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:18:36,449 INFO L87 Difference]: Start difference. First operand 72 states and 75 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) [2022-02-15 02:18:37,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:37,250 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2022-02-15 02:18:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 02:18:37,250 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 71 [2022-02-15 02:18:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:37,250 INFO L225 Difference]: With dead ends: 98 [2022-02-15 02:18:37,250 INFO L226 Difference]: Without dead ends: 87 [2022-02-15 02:18:37,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 27 SyntacticMatches, 14 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=375, Invalid=3531, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:18:37,252 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 145 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:37,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 18 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:18:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-15 02:18:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2022-02-15 02:18:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 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) [2022-02-15 02:18:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2022-02-15 02:18:37,273 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 71 [2022-02-15 02:18:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:37,273 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2022-02-15 02:18:37,273 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) [2022-02-15 02:18:37,274 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2022-02-15 02:18:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 02:18:37,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:37,274 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:37,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 02:18:37,274 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash 569919409, now seen corresponding path program 26 times [2022-02-15 02:18:37,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:37,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827621174] [2022-02-15 02:18:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:37,378 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,428 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,456 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,501 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,529 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,574 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,599 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:37,599 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:37,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:38,178 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:38,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827621174] [2022-02-15 02:18:38,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1827621174] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:38,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:38,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 02:18:38,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269842228] [2022-02-15 02:18:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:38,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 02:18:38,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 02:18:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 02:18:38,179 INFO L87 Difference]: Start difference. First operand 74 states and 77 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) [2022-02-15 02:18:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:39,169 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2022-02-15 02:18:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 02:18:39,169 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 73 [2022-02-15 02:18:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:39,170 INFO L225 Difference]: With dead ends: 102 [2022-02-15 02:18:39,170 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 02:18:39,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 32 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=387, Invalid=3773, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:18:39,171 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 150 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:39,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 63 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 02:18:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 02:18:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2022-02-15 02:18:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2022-02-15 02:18:39,194 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 73 [2022-02-15 02:18:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:39,195 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2022-02-15 02:18:39,195 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) [2022-02-15 02:18:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2022-02-15 02:18:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 02:18:39,195 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:39,195 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:39,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 02:18:39,195 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:39,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2129439409, now seen corresponding path program 27 times [2022-02-15 02:18:39,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:39,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169250169] [2022-02-15 02:18:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:39,302 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:39,337 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:39,362 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:39,402 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:39,428 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:39,462 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:39,484 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:39,485 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:39,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:40,116 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:40,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169250169] [2022-02-15 02:18:40,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [169250169] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:40,117 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:40,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:18:40,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175406726] [2022-02-15 02:18:40,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:40,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:18:40,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:18:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:18:40,118 INFO L87 Difference]: Start difference. First operand 78 states and 81 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) [2022-02-15 02:18:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:41,030 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2022-02-15 02:18:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 02:18:41,030 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 75 [2022-02-15 02:18:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:41,031 INFO L225 Difference]: With dead ends: 103 [2022-02-15 02:18:41,031 INFO L226 Difference]: Without dead ends: 92 [2022-02-15 02:18:41,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 27 SyntacticMatches, 16 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=399, Invalid=4023, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:18:41,032 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 107 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:41,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 53 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 02:18:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-02-15 02:18:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2022-02-15 02:18:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2022-02-15 02:18:41,061 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 75 [2022-02-15 02:18:41,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:41,061 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2022-02-15 02:18:41,061 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) [2022-02-15 02:18:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2022-02-15 02:18:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 02:18:41,061 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:41,061 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:41,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 02:18:41,062 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:41,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1592996834, now seen corresponding path program 28 times [2022-02-15 02:18:41,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:41,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296270879] [2022-02-15 02:18:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:41,169 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:41,202 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:41,227 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:41,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:41,287 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:41,320 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:41,343 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:41,343 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:41,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:42,053 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:42,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296270879] [2022-02-15 02:18:42,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1296270879] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:42,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:42,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 02:18:42,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924637183] [2022-02-15 02:18:42,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:42,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 02:18:42,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 02:18:42,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:18:42,054 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:43,031 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2022-02-15 02:18:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 02:18:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 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 78 [2022-02-15 02:18:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:43,032 INFO L225 Difference]: With dead ends: 105 [2022-02-15 02:18:43,032 INFO L226 Difference]: Without dead ends: 94 [2022-02-15 02:18:43,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 28 SyntacticMatches, 17 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=411, Invalid=4281, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:18:43,033 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 147 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:43,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 18 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 02:18:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-15 02:18:43,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2022-02-15 02:18:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2022-02-15 02:18:43,057 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 78 [2022-02-15 02:18:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:43,058 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2022-02-15 02:18:43,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2022-02-15 02:18:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 02:18:43,058 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:43,058 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:43,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 02:18:43,058 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:43,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:43,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1927777668, now seen corresponding path program 29 times [2022-02-15 02:18:43,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:43,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260441258] [2022-02-15 02:18:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:43,161 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:43,200 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:43,232 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:43,255 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:43,286 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:43,337 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:43,361 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:43,361 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:43,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:43,991 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:43,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260441258] [2022-02-15 02:18:43,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1260441258] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:43,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:43,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 02:18:43,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567169195] [2022-02-15 02:18:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:43,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 02:18:43,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:43,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 02:18:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:18:43,993 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:45,045 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2022-02-15 02:18:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 02:18:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 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 [2022-02-15 02:18:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:45,046 INFO L225 Difference]: With dead ends: 107 [2022-02-15 02:18:45,046 INFO L226 Difference]: Without dead ends: 96 [2022-02-15 02:18:45,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 37 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=423, Invalid=4547, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:18:45,047 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 120 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:45,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 43 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 02:18:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-15 02:18:45,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2022-02-15 02:18:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2022-02-15 02:18:45,073 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 80 [2022-02-15 02:18:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:45,073 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2022-02-15 02:18:45,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2022-02-15 02:18:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-15 02:18:45,073 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:45,073 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:45,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 02:18:45,073 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1529611942, now seen corresponding path program 30 times [2022-02-15 02:18:45,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:45,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789908137] [2022-02-15 02:18:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:45,177 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:45,216 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:45,245 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:45,283 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:45,318 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:45,356 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:45,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:45,393 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:45,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:46,081 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:46,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789908137] [2022-02-15 02:18:46,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1789908137] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:46,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:46,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 02:18:46,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653427096] [2022-02-15 02:18:46,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:46,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 02:18:46,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:46,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 02:18:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 02:18:46,082 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:47,204 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-02-15 02:18:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 02:18:47,204 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 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 82 [2022-02-15 02:18:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:47,205 INFO L225 Difference]: With dead ends: 109 [2022-02-15 02:18:47,205 INFO L226 Difference]: Without dead ends: 98 [2022-02-15 02:18:47,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 31 SyntacticMatches, 16 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=435, Invalid=4821, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:18:47,205 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 143 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:47,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 88 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 02:18:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-02-15 02:18:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2022-02-15 02:18:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 81 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-02-15 02:18:47,233 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 82 [2022-02-15 02:18:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:47,233 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-02-15 02:18:47,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-02-15 02:18:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 02:18:47,233 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:47,233 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:47,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 02:18:47,233 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1144438600, now seen corresponding path program 31 times [2022-02-15 02:18:47,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:47,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838393454] [2022-02-15 02:18:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:47,338 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:47,379 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:47,416 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:47,462 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:47,491 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:47,532 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:47,555 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:47,555 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:48,279 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:48,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838393454] [2022-02-15 02:18:48,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1838393454] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:48,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:48,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 02:18:48,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925787209] [2022-02-15 02:18:48,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:48,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 02:18:48,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 02:18:48,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:18:48,281 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:49,525 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2022-02-15 02:18:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 02:18:49,526 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 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 84 [2022-02-15 02:18:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:49,526 INFO L225 Difference]: With dead ends: 111 [2022-02-15 02:18:49,526 INFO L226 Difference]: Without dead ends: 100 [2022-02-15 02:18:49,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 35 SyntacticMatches, 13 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=447, Invalid=5103, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:18:49,527 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 124 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:49,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 23 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 02:18:49,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-15 02:18:49,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2022-02-15 02:18:49,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 83 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2022-02-15 02:18:49,557 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 84 [2022-02-15 02:18:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:49,557 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2022-02-15 02:18:49,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2022-02-15 02:18:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-15 02:18:49,557 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:49,557 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:49,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 02:18:49,557 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:49,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:49,558 INFO L85 PathProgramCache]: Analyzing trace with hash -360044394, now seen corresponding path program 32 times [2022-02-15 02:18:49,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:49,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249218220] [2022-02-15 02:18:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:49,693 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,729 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,754 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,787 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,813 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,846 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,868 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:49,868 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:50,623 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:50,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249218220] [2022-02-15 02:18:50,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1249218220] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:50,623 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:50,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 02:18:50,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390758018] [2022-02-15 02:18:50,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:50,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 02:18:50,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 02:18:50,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 02:18:50,624 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:51,933 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2022-02-15 02:18:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 02:18:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 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 86 [2022-02-15 02:18:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:51,933 INFO L225 Difference]: With dead ends: 113 [2022-02-15 02:18:51,934 INFO L226 Difference]: Without dead ends: 102 [2022-02-15 02:18:51,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 34 SyntacticMatches, 15 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=459, Invalid=5393, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:18:51,934 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 126 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:51,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 118 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 02:18:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-02-15 02:18:51,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 89. [2022-02-15 02:18:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 85 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) [2022-02-15 02:18:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2022-02-15 02:18:51,964 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 86 [2022-02-15 02:18:51,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:51,964 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2022-02-15 02:18:51,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:51,965 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2022-02-15 02:18:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 02:18:51,965 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:51,965 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:51,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 02:18:51,965 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1823510772, now seen corresponding path program 33 times [2022-02-15 02:18:51,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:51,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588136648] [2022-02-15 02:18:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:52,078 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:52,113 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:52,138 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:52,175 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:52,203 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:52,237 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:52,260 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:52,260 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:53,059 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:53,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588136648] [2022-02-15 02:18:53,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1588136648] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:53,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:53,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-15 02:18:53,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044344213] [2022-02-15 02:18:53,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:53,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 02:18:53,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:53,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 02:18:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:18:53,060 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:54,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:54,447 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2022-02-15 02:18:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 02:18:54,448 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 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 88 [2022-02-15 02:18:54,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:54,448 INFO L225 Difference]: With dead ends: 117 [2022-02-15 02:18:54,448 INFO L226 Difference]: Without dead ends: 106 [2022-02-15 02:18:54,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 37 SyntacticMatches, 13 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=471, Invalid=5691, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:18:54,449 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 130 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:54,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 103 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 02:18:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-15 02:18:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 93. [2022-02-15 02:18:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 89 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2022-02-15 02:18:54,482 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 88 [2022-02-15 02:18:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:54,482 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2022-02-15 02:18:54,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2022-02-15 02:18:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-15 02:18:54,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:54,482 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:54,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 02:18:54,482 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:54,483 INFO L85 PathProgramCache]: Analyzing trace with hash -18982446, now seen corresponding path program 34 times [2022-02-15 02:18:54,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:54,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391997948] [2022-02-15 02:18:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:54,600 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:54,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:54,660 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:54,693 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:54,719 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:54,752 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:54,776 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:54,776 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:55,672 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:55,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391997948] [2022-02-15 02:18:55,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [391997948] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:55,672 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:55,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 02:18:55,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051016023] [2022-02-15 02:18:55,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:55,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 02:18:55,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:55,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 02:18:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1559, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 02:18:55,673 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:57,100 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2022-02-15 02:18:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 02:18:57,100 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 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 [2022-02-15 02:18:57,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:57,100 INFO L225 Difference]: With dead ends: 118 [2022-02-15 02:18:57,101 INFO L226 Difference]: Without dead ends: 107 [2022-02-15 02:18:57,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 34 SyntacticMatches, 17 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=483, Invalid=5997, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:18:57,101 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 172 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:57,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 58 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3066 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:18:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-15 02:18:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2022-02-15 02:18:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.043956043956044) internal successors, (95), 91 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:57,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2022-02-15 02:18:57,134 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 90 [2022-02-15 02:18:57,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:57,135 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2022-02-15 02:18:57,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:57,135 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2022-02-15 02:18:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 02:18:57,135 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:57,135 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:57,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 02:18:57,135 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1299109051, now seen corresponding path program 35 times [2022-02-15 02:18:57,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:57,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588398043] [2022-02-15 02:18:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:57,251 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:57,283 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:57,315 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:57,347 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:57,371 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:57,403 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:57,432 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:18:57,432 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:18:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:58,395 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:58,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588398043] [2022-02-15 02:18:58,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1588398043] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:58,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:58,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 02:18:58,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617193469] [2022-02-15 02:18:58,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:58,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 02:18:58,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:58,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 02:18:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:18:58,397 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 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) [2022-02-15 02:18:59,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:59,822 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2022-02-15 02:18:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 02:18:59,822 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 1 states have call successors, (2), 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 93 [2022-02-15 02:18:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:59,823 INFO L225 Difference]: With dead ends: 120 [2022-02-15 02:18:59,823 INFO L226 Difference]: Without dead ends: 109 [2022-02-15 02:18:59,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 31 SyntacticMatches, 22 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=495, Invalid=6311, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:18:59,824 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 176 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2927 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:59,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 88 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 02:18:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-15 02:18:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2022-02-15 02:18:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 92 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2022-02-15 02:18:59,862 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 93 [2022-02-15 02:18:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:59,862 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2022-02-15 02:18:59,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2022-02-15 02:18:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-15 02:18:59,862 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:59,862 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:59,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 02:18:59,863 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1457862695, now seen corresponding path program 36 times [2022-02-15 02:18:59,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:59,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256468625] [2022-02-15 02:18:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:59,986 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:00,023 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:00,047 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:00,071 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:00,117 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:00,155 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:00,180 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:00,180 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:01,017 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:01,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256468625] [2022-02-15 02:19:01,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [256468625] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:01,017 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:01,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-15 02:19:01,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005626104] [2022-02-15 02:19:01,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:01,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 02:19:01,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:01,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 02:19:01,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 02:19:01,018 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 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) [2022-02-15 02:19:02,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:02,517 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2022-02-15 02:19:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 02:19:02,518 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 1 states have call successors, (2), 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 [2022-02-15 02:19:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:02,518 INFO L225 Difference]: With dead ends: 122 [2022-02-15 02:19:02,518 INFO L226 Difference]: Without dead ends: 111 [2022-02-15 02:19:02,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=507, Invalid=6633, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:19:02,519 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 134 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:02,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 33 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:19:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-15 02:19:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2022-02-15 02:19:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2022-02-15 02:19:02,559 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 95 [2022-02-15 02:19:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:02,559 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2022-02-15 02:19:02,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2022-02-15 02:19:02,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 02:19:02,560 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:02,560 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:02,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 02:19:02,560 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash -912888969, now seen corresponding path program 37 times [2022-02-15 02:19:02,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:02,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713576525] [2022-02-15 02:19:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:02,682 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:02,716 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:02,741 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:02,775 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:02,804 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:02,841 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:02,864 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:02,864 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:02,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:02,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:03,815 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:03,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713576525] [2022-02-15 02:19:03,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [713576525] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:03,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:03,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 02:19:03,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650633370] [2022-02-15 02:19:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:03,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 02:19:03,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 02:19:03,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:19:03,817 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 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) [2022-02-15 02:19:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:05,349 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2022-02-15 02:19:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 02:19:05,350 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 states have internal predecessors, (94), 1 states have call successors, (2), 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 97 [2022-02-15 02:19:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:05,350 INFO L225 Difference]: With dead ends: 124 [2022-02-15 02:19:05,350 INFO L226 Difference]: Without dead ends: 113 [2022-02-15 02:19:05,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 37 SyntacticMatches, 18 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=519, Invalid=6963, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:19:05,351 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 173 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3175 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:05,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 83 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 02:19:05,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-15 02:19:05,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 100. [2022-02-15 02:19:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2022-02-15 02:19:05,394 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 97 [2022-02-15 02:19:05,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:05,394 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2022-02-15 02:19:05,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:05,394 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2022-02-15 02:19:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-15 02:19:05,394 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:05,394 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:05,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 02:19:05,394 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1179148395, now seen corresponding path program 38 times [2022-02-15 02:19:05,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:05,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070726838] [2022-02-15 02:19:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:05,523 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,555 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,580 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,612 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,636 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,669 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:05,702 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:06,748 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:06,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070726838] [2022-02-15 02:19:06,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2070726838] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:06,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:06,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-15 02:19:06,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375452404] [2022-02-15 02:19:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:06,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-15 02:19:06,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-15 02:19:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1891, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 02:19:06,749 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 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) [2022-02-15 02:19:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:08,432 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2022-02-15 02:19:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 02:19:08,432 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 states have internal predecessors, (96), 1 states have call successors, (2), 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 99 [2022-02-15 02:19:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:08,433 INFO L225 Difference]: With dead ends: 126 [2022-02-15 02:19:08,433 INFO L226 Difference]: Without dead ends: 115 [2022-02-15 02:19:08,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 36 SyntacticMatches, 20 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=531, Invalid=7301, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:19:08,434 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 138 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3671 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 3769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:08,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 83 Invalid, 3769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 3671 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:19:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-15 02:19:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2022-02-15 02:19:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 98 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2022-02-15 02:19:08,482 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 99 [2022-02-15 02:19:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:08,483 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2022-02-15 02:19:08,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2022-02-15 02:19:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-15 02:19:08,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:08,483 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:08,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 02:19:08,483 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash 643580979, now seen corresponding path program 39 times [2022-02-15 02:19:08,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:08,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372130484] [2022-02-15 02:19:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:08,594 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:08,633 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:08,658 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:08,704 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:08,729 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:08,770 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:08,793 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:08,794 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:08,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:08,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:09,837 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:09,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372130484] [2022-02-15 02:19:09,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1372130484] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:09,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:09,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 02:19:09,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554443664] [2022-02-15 02:19:09,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:09,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 02:19:09,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 02:19:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1979, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:19:09,838 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 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) [2022-02-15 02:19:11,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:11,569 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2022-02-15 02:19:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 02:19:11,569 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (2), 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 101 [2022-02-15 02:19:11,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:11,570 INFO L225 Difference]: With dead ends: 128 [2022-02-15 02:19:11,570 INFO L226 Difference]: Without dead ends: 117 [2022-02-15 02:19:11,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 36 SyntacticMatches, 21 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=543, Invalid=7647, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:19:11,571 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 188 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3632 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 3777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:11,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 58 Invalid, 3777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3632 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 02:19:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-15 02:19:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 104. [2022-02-15 02:19:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.04) internal successors, (104), 100 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) [2022-02-15 02:19:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2022-02-15 02:19:11,611 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 101 [2022-02-15 02:19:11,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:11,611 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2022-02-15 02:19:11,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2022-02-15 02:19:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-15 02:19:11,612 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:11,612 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:11,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 02:19:11,612 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash -60147375, now seen corresponding path program 40 times [2022-02-15 02:19:11,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:11,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682191282] [2022-02-15 02:19:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:11,716 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:11,755 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:11,782 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:11,821 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:11,845 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:11,883 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:11,906 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:11,907 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:13,046 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:13,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682191282] [2022-02-15 02:19:13,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [682191282] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:13,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:13,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-15 02:19:13,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714439453] [2022-02-15 02:19:13,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:13,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-15 02:19:13,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-15 02:19:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2069, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 02:19:13,047 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 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) [2022-02-15 02:19:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:14,878 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2022-02-15 02:19:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 02:19:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 1 states have call successors, (2), 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 103 [2022-02-15 02:19:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:14,879 INFO L225 Difference]: With dead ends: 132 [2022-02-15 02:19:14,879 INFO L226 Difference]: Without dead ends: 121 [2022-02-15 02:19:14,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 33 SyntacticMatches, 25 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=555, Invalid=8001, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:19:14,879 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 191 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 4035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:14,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 148 Invalid, 4035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3884 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:19:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-15 02:19:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 108. [2022-02-15 02:19:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 104 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2022-02-15 02:19:14,923 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 103 [2022-02-15 02:19:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:14,923 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2022-02-15 02:19:14,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2022-02-15 02:19:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 02:19:14,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:14,924 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:14,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 02:19:14,924 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:14,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2033230097, now seen corresponding path program 41 times [2022-02-15 02:19:14,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:14,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731221871] [2022-02-15 02:19:14,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:15,503 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:15,543 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:15,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:15,609 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:15,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:15,674 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:15,699 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:15,699 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:16,882 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:16,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731221871] [2022-02-15 02:19:16,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [731221871] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:16,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:16,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-15 02:19:16,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30658140] [2022-02-15 02:19:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:16,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-15 02:19:16,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-15 02:19:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2256, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 02:19:16,883 INFO L87 Difference]: Start difference. First operand 108 states and 111 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) [2022-02-15 02:19:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:18,843 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2022-02-15 02:19:18,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 02:19:18,843 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 105 [2022-02-15 02:19:18,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:18,844 INFO L225 Difference]: With dead ends: 130 [2022-02-15 02:19:18,844 INFO L226 Difference]: Without dead ends: 119 [2022-02-15 02:19:18,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 38 SyntacticMatches, 20 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=576, Invalid=8736, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 02:19:18,844 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 125 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4217 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 4318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:18,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 127 Invalid, 4318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 4217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:19:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-15 02:19:18,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2022-02-15 02:19:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.037037037037037) internal successors, (112), 108 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2022-02-15 02:19:18,890 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 105 [2022-02-15 02:19:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:18,890 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2022-02-15 02:19:18,890 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) [2022-02-15 02:19:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2022-02-15 02:19:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-15 02:19:18,891 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:18,891 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:18,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 02:19:18,891 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash 326718754, now seen corresponding path program 42 times [2022-02-15 02:19:18,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:18,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180492152] [2022-02-15 02:19:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:19,446 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:19,484 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:19,509 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:19,548 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:19,572 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:19,610 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:19,643 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:19,643 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:20,857 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:20,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180492152] [2022-02-15 02:19:20,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [180492152] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:20,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:20,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-15 02:19:20,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760258919] [2022-02-15 02:19:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:20,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-15 02:19:20,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-15 02:19:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2353, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:19:20,858 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:22,767 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2022-02-15 02:19:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 02:19:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 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 108 [2022-02-15 02:19:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:22,768 INFO L225 Difference]: With dead ends: 131 [2022-02-15 02:19:22,768 INFO L226 Difference]: Without dead ends: 120 [2022-02-15 02:19:22,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 39 SyntacticMatches, 21 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=585, Invalid=9117, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:19:22,768 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 133 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 3958 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:22,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 47 Invalid, 4066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3958 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:19:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-15 02:19:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2022-02-15 02:19:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 1.036697247706422) internal successors, (113), 109 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2022-02-15 02:19:22,818 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 108 [2022-02-15 02:19:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:22,818 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2022-02-15 02:19:22,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2022-02-15 02:19:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-15 02:19:22,819 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:22,819 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:22,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 02:19:22,819 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:22,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash 751982443, now seen corresponding path program 43 times [2022-02-15 02:19:22,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:22,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144677543] [2022-02-15 02:19:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:23,406 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,439 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,464 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,496 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,520 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,554 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,579 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,597 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,600 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:23,600 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:19:23,626 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:23,626 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:24,838 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:24,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144677543] [2022-02-15 02:19:24,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2144677543] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:24,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:24,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-15 02:19:24,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720536075] [2022-02-15 02:19:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:24,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-15 02:19:24,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:24,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-15 02:19:24,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2452, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 02:19:24,839 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 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) [2022-02-15 02:19:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:26,886 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2022-02-15 02:19:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 02:19:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 1 states have call successors, (2), 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 111 [2022-02-15 02:19:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:26,887 INFO L225 Difference]: With dead ends: 133 [2022-02-15 02:19:26,887 INFO L226 Difference]: Without dead ends: 122 [2022-02-15 02:19:26,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 43 SyntacticMatches, 19 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=594, Invalid=9506, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:19:26,888 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 181 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4422 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 4579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 4422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:26,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 117 Invalid, 4579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 4422 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 02:19:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-15 02:19:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2022-02-15 02:19:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 110 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) [2022-02-15 02:19:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2022-02-15 02:19:26,935 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 111 [2022-02-15 02:19:26,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:26,935 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2022-02-15 02:19:26,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2022-02-15 02:19:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-15 02:19:26,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:26,938 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:26,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 02:19:26,938 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1034444425, now seen corresponding path program 44 times [2022-02-15 02:19:26,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:26,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790295695] [2022-02-15 02:19:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:27,575 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:27,611 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:27,647 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:27,692 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:27,711 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:27,745 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:27,776 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:27,776 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:29,154 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:29,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790295695] [2022-02-15 02:19:29,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [790295695] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:29,155 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:29,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-15 02:19:29,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742165159] [2022-02-15 02:19:29,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:29,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-15 02:19:29,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:29,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-15 02:19:29,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2553, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:19:29,156 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 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) [2022-02-15 02:19:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:31,346 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2022-02-15 02:19:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 02:19:31,347 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 1 states have call successors, (2), 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 113 [2022-02-15 02:19:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:31,347 INFO L225 Difference]: With dead ends: 135 [2022-02-15 02:19:31,347 INFO L226 Difference]: Without dead ends: 124 [2022-02-15 02:19:31,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 34 SyntacticMatches, 29 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2214 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=603, Invalid=9903, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:19:31,348 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 137 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4837 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 4837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:31,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 157 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 4837 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:19:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-15 02:19:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2022-02-15 02:19:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2022-02-15 02:19:31,406 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 113 [2022-02-15 02:19:31,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:31,407 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2022-02-15 02:19:31,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2022-02-15 02:19:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 02:19:31,407 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:31,407 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:31,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 02:19:31,409 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1897469479, now seen corresponding path program 45 times [2022-02-15 02:19:31,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:31,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3443487] [2022-02-15 02:19:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:32,143 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,176 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,208 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,251 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,286 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,318 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,362 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:32,363 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:32,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:33,767 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:33,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3443487] [2022-02-15 02:19:33,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [3443487] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:33,767 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:33,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-15 02:19:33,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127107136] [2022-02-15 02:19:33,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:33,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-15 02:19:33,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-15 02:19:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2656, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 02:19:33,768 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 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) [2022-02-15 02:19:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:36,022 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2022-02-15 02:19:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 02:19:36,022 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 1 states have call successors, (2), 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 [2022-02-15 02:19:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:36,023 INFO L225 Difference]: With dead ends: 137 [2022-02-15 02:19:36,023 INFO L226 Difference]: Without dead ends: 126 [2022-02-15 02:19:36,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 34 SyntacticMatches, 30 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=612, Invalid=10308, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 02:19:36,024 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 185 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 5185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:36,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 122 Invalid, 5185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:19:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-15 02:19:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2022-02-15 02:19:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2022-02-15 02:19:36,079 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 115 [2022-02-15 02:19:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:36,080 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2022-02-15 02:19:36,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2022-02-15 02:19:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-15 02:19:36,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:36,080 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:36,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 02:19:36,080 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1959109051, now seen corresponding path program 46 times [2022-02-15 02:19:36,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:36,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594601730] [2022-02-15 02:19:36,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:36,699 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,738 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,771 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,814 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,852 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,905 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,956 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:36,956 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:36,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:36,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:38,419 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:38,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594601730] [2022-02-15 02:19:38,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1594601730] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:38,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:38,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-15 02:19:38,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411484706] [2022-02-15 02:19:38,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:38,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-15 02:19:38,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:38,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-15 02:19:38,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2761, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:19:38,420 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 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) [2022-02-15 02:19:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:40,543 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2022-02-15 02:19:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 02:19:40,543 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 states have internal predecessors, (114), 1 states have call successors, (2), 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 117 [2022-02-15 02:19:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:40,543 INFO L225 Difference]: With dead ends: 139 [2022-02-15 02:19:40,543 INFO L226 Difference]: Without dead ends: 128 [2022-02-15 02:19:40,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 38 SyntacticMatches, 27 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=621, Invalid=10721, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 02:19:40,544 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 142 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4356 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 4472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 4356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:40,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 77 Invalid, 4472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 4356 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 02:19:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-02-15 02:19:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 120. [2022-02-15 02:19:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.0344827586206897) internal successors, (120), 116 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2022-02-15 02:19:40,599 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 117 [2022-02-15 02:19:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:40,600 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2022-02-15 02:19:40,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2022-02-15 02:19:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-15 02:19:40,600 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:40,600 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:40,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 02:19:40,601 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1574299933, now seen corresponding path program 47 times [2022-02-15 02:19:40,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:40,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131865399] [2022-02-15 02:19:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:41,243 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,277 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,310 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,369 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,404 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,439 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,495 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:41,496 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:41,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:41,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:42,807 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:42,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131865399] [2022-02-15 02:19:42,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1131865399] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:42,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:42,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-15 02:19:42,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525492795] [2022-02-15 02:19:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:42,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-15 02:19:42,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:42,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-15 02:19:42,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2868, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 02:19:42,809 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 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) [2022-02-15 02:19:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:45,162 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2022-02-15 02:19:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 02:19:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 1 states have call successors, (2), 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 119 [2022-02-15 02:19:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:45,164 INFO L225 Difference]: With dead ends: 141 [2022-02-15 02:19:45,164 INFO L226 Difference]: Without dead ends: 130 [2022-02-15 02:19:45,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 44 SyntacticMatches, 22 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2623 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=630, Invalid=11142, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 02:19:45,166 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 189 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5274 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 5439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 5274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:45,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 107 Invalid, 5439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 5274 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:19:45,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-02-15 02:19:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2022-02-15 02:19:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 118 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2022-02-15 02:19:45,220 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 119 [2022-02-15 02:19:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:45,220 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2022-02-15 02:19:45,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2022-02-15 02:19:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 02:19:45,220 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:45,220 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:45,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 02:19:45,221 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:45,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:45,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1139924991, now seen corresponding path program 48 times [2022-02-15 02:19:45,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:45,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957162523] [2022-02-15 02:19:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:45,841 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:45,880 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:45,912 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:45,959 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:45,998 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,083 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:46,083 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:46,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:46,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:47,452 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:47,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957162523] [2022-02-15 02:19:47,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [957162523] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:47,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:47,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-15 02:19:47,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069401640] [2022-02-15 02:19:47,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:47,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-15 02:19:47,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:47,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-15 02:19:47,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2977, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:19:47,454 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 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) [2022-02-15 02:19:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:49,921 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2022-02-15 02:19:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 02:19:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 states have internal predecessors, (118), 1 states have call successors, (2), 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 121 [2022-02-15 02:19:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:49,926 INFO L225 Difference]: With dead ends: 145 [2022-02-15 02:19:49,926 INFO L226 Difference]: Without dead ends: 134 [2022-02-15 02:19:49,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 45 SyntacticMatches, 22 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2830 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=639, Invalid=11571, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 02:19:49,927 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 176 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 5551 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 5709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 5551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:49,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 152 Invalid, 5709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 5551 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:19:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-15 02:19:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2022-02-15 02:19:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2022-02-15 02:19:49,992 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 121 [2022-02-15 02:19:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:49,992 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2022-02-15 02:19:49,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:49,992 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2022-02-15 02:19:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-15 02:19:49,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:49,993 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:49,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 02:19:49,993 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash -317433441, now seen corresponding path program 49 times [2022-02-15 02:19:49,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:49,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31891999] [2022-02-15 02:19:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:50,612 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,646 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,678 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,722 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,754 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,787 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,834 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:50,834 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:50,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:52,313 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:52,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31891999] [2022-02-15 02:19:52,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [31891999] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:52,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:52,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-15 02:19:52,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770407706] [2022-02-15 02:19:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:52,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-15 02:19:52,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-15 02:19:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3088, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 02:19:52,315 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 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) [2022-02-15 02:19:54,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:54,661 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2022-02-15 02:19:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 02:19:54,661 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 1 states have call successors, (2), 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 123 [2022-02-15 02:19:54,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:54,662 INFO L225 Difference]: With dead ends: 146 [2022-02-15 02:19:54,662 INFO L226 Difference]: Without dead ends: 135 [2022-02-15 02:19:54,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 40 SyntacticMatches, 28 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3050 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=648, Invalid=12008, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 02:19:54,663 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 147 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5064 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 5188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 5064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:54,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 72 Invalid, 5188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 5064 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 02:19:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-02-15 02:19:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 128. [2022-02-15 02:19:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 1.032258064516129) internal successors, (128), 124 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2022-02-15 02:19:54,728 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 123 [2022-02-15 02:19:54,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:54,728 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2022-02-15 02:19:54,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2022-02-15 02:19:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-15 02:19:54,729 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:54,729 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:54,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 02:19:54,729 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash 727819726, now seen corresponding path program 50 times [2022-02-15 02:19:54,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:54,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118793643] [2022-02-15 02:19:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:55,350 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:55,384 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:55,416 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:55,460 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:55,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:55,526 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:55,575 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:19:55,575 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:19:55,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:57,095 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:57,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118793643] [2022-02-15 02:19:57,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [118793643] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:57,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:57,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-15 02:19:57,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641537307] [2022-02-15 02:19:57,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:57,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-15 02:19:57,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-15 02:19:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=3201, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:19:57,097 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:59,623 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2022-02-15 02:19:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 02:19:59,623 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 1 states have call successors, (2), 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 126 [2022-02-15 02:19:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:59,624 INFO L225 Difference]: With dead ends: 148 [2022-02-15 02:19:59,624 INFO L226 Difference]: Without dead ends: 137 [2022-02-15 02:19:59,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 44 SyntacticMatches, 26 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3074 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=657, Invalid=12453, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 02:19:59,625 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 186 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5663 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 5830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 5663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:59,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 72 Invalid, 5830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 5663 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:19:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-15 02:19:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2022-02-15 02:19:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.032) internal successors, (129), 125 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) [2022-02-15 02:19:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2022-02-15 02:19:59,684 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 126 [2022-02-15 02:19:59,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:59,684 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2022-02-15 02:19:59,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2022-02-15 02:19:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-15 02:19:59,685 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:59,685 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:59,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 02:19:59,685 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash -711090132, now seen corresponding path program 51 times [2022-02-15 02:19:59,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:59,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434551563] [2022-02-15 02:19:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:00,333 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,366 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,399 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,453 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,486 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,518 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,570 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:00,571 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:00,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:02,147 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:02,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434551563] [2022-02-15 02:20:02,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1434551563] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:02,147 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:02,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-15 02:20:02,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949767576] [2022-02-15 02:20:02,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:02,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-15 02:20:02,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:02,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-15 02:20:02,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3316, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 02:20:02,149 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:04,706 INFO L93 Difference]: Finished difference Result 150 states and 160 transitions. [2022-02-15 02:20:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 02:20:04,707 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 1 states have call successors, (2), 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 128 [2022-02-15 02:20:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:04,707 INFO L225 Difference]: With dead ends: 150 [2022-02-15 02:20:04,707 INFO L226 Difference]: Without dead ends: 139 [2022-02-15 02:20:04,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 45 SyntacticMatches, 26 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=666, Invalid=12906, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 02:20:04,708 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 197 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5705 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 5705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:04,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 27 Invalid, 5880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 5705 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:20:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-02-15 02:20:04,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2022-02-15 02:20:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.031496062992126) internal successors, (131), 127 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2022-02-15 02:20:04,774 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 128 [2022-02-15 02:20:04,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:04,775 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2022-02-15 02:20:04,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2022-02-15 02:20:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-15 02:20:04,775 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:04,775 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:04,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 02:20:04,775 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:04,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:04,776 INFO L85 PathProgramCache]: Analyzing trace with hash -523994358, now seen corresponding path program 52 times [2022-02-15 02:20:04,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:04,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100310071] [2022-02-15 02:20:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:05,396 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:05,429 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:05,473 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:05,517 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:05,550 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:05,583 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:05,632 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:05,632 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:05,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:05,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:07,315 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:07,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100310071] [2022-02-15 02:20:07,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1100310071] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:07,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:07,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-15 02:20:07,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318919120] [2022-02-15 02:20:07,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:07,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-15 02:20:07,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-15 02:20:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=3433, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:20:07,317 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:09,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:09,813 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2022-02-15 02:20:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 02:20:09,814 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 1 states have call successors, (2), 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 [2022-02-15 02:20:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:09,815 INFO L225 Difference]: With dead ends: 152 [2022-02-15 02:20:09,815 INFO L226 Difference]: Without dead ends: 141 [2022-02-15 02:20:09,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 39 SyntacticMatches, 33 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3484 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=675, Invalid=13367, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 02:20:09,816 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 146 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5328 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 5452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 5328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:09,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 92 Invalid, 5452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 5328 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 02:20:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-02-15 02:20:09,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2022-02-15 02:20:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.0310077519379846) internal successors, (133), 129 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2022-02-15 02:20:09,879 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 130 [2022-02-15 02:20:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:09,879 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2022-02-15 02:20:09,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2022-02-15 02:20:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-02-15 02:20:09,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:09,880 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:09,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 02:20:09,880 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1113581976, now seen corresponding path program 53 times [2022-02-15 02:20:09,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:09,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363494535] [2022-02-15 02:20:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:10,512 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:10,555 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:10,587 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:10,637 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:10,676 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:10,709 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:10,755 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:10,755 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:10,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:12,291 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:12,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363494535] [2022-02-15 02:20:12,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [363494535] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:12,292 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:12,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-15 02:20:12,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494027175] [2022-02-15 02:20:12,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:12,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-15 02:20:12,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-15 02:20:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3552, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 02:20:12,293 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:15,070 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2022-02-15 02:20:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 02:20:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 1 states have call successors, (2), 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 132 [2022-02-15 02:20:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:15,071 INFO L225 Difference]: With dead ends: 154 [2022-02-15 02:20:15,071 INFO L226 Difference]: Without dead ends: 143 [2022-02-15 02:20:15,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 52 SyntacticMatches, 21 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3515 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=684, Invalid=13836, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 02:20:15,072 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 184 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 6380 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 6380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:15,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 172 Invalid, 6547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 6380 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 02:20:15,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-02-15 02:20:15,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 135. [2022-02-15 02:20:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 131 states have (on average 1.0305343511450382) internal successors, (135), 131 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2022-02-15 02:20:15,142 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 132 [2022-02-15 02:20:15,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:15,142 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2022-02-15 02:20:15,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2022-02-15 02:20:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-02-15 02:20:15,142 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:15,142 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:15,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 02:20:15,142 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash -771599802, now seen corresponding path program 54 times [2022-02-15 02:20:15,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:15,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969516970] [2022-02-15 02:20:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:15,763 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:15,796 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:15,829 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:15,874 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:15,906 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:15,939 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:15,987 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:15,987 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:15,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:17,770 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:17,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969516970] [2022-02-15 02:20:17,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1969516970] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:17,770 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:17,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-15 02:20:17,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362447057] [2022-02-15 02:20:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:17,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-15 02:20:17,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-15 02:20:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3673, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:20:17,772 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:20,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:20,473 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2022-02-15 02:20:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 02:20:20,473 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 1 states have call successors, (2), 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 134 [2022-02-15 02:20:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:20,474 INFO L225 Difference]: With dead ends: 156 [2022-02-15 02:20:20,474 INFO L226 Difference]: Without dead ends: 145 [2022-02-15 02:20:20,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 40 SyntacticMatches, 34 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3849 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=693, Invalid=14313, Unknown=0, NotChecked=0, Total=15006 [2022-02-15 02:20:20,475 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 149 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 5939 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 5939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:20,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 172 Invalid, 6067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 5939 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 02:20:20,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-02-15 02:20:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2022-02-15 02:20:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 133 states have (on average 1.0300751879699248) internal successors, (137), 133 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2022-02-15 02:20:20,546 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 134 [2022-02-15 02:20:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:20,546 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2022-02-15 02:20:20,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2022-02-15 02:20:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-15 02:20:20,547 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:20,547 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:20,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 02:20:20,547 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:20,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:20,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1455754916, now seen corresponding path program 55 times [2022-02-15 02:20:20,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:20,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40283398] [2022-02-15 02:20:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:21,191 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:21,230 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:21,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:21,305 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:21,344 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:21,376 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:21,423 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:21,423 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:21,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:23,098 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:23,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40283398] [2022-02-15 02:20:23,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [40283398] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:23,098 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:23,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-15 02:20:23,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351775477] [2022-02-15 02:20:23,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:23,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-15 02:20:23,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-15 02:20:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3796, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 02:20:23,099 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:25,895 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2022-02-15 02:20:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 02:20:25,896 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 1 states have call successors, (2), 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 136 [2022-02-15 02:20:25,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:25,910 INFO L225 Difference]: With dead ends: 160 [2022-02-15 02:20:25,910 INFO L226 Difference]: Without dead ends: 149 [2022-02-15 02:20:25,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 49 SyntacticMatches, 26 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3977 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=702, Invalid=14798, Unknown=0, NotChecked=0, Total=15500 [2022-02-15 02:20:25,911 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 192 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6174 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 6349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 6174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:25,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 62 Invalid, 6349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 6174 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 02:20:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-02-15 02:20:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2022-02-15 02:20:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 137 states have internal predecessors, (141), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2022-02-15 02:20:25,982 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 136 [2022-02-15 02:20:25,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:25,982 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2022-02-15 02:20:25,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2022-02-15 02:20:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-02-15 02:20:25,983 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:25,983 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:25,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 02:20:25,983 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1245041790, now seen corresponding path program 56 times [2022-02-15 02:20:25,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:25,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704704217] [2022-02-15 02:20:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:26,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:26,646 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:26,679 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:26,723 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:26,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:26,796 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:26,844 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:26,844 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:26,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:28,651 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:28,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704704217] [2022-02-15 02:20:28,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1704704217] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:28,652 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:28,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-15 02:20:28,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992436822] [2022-02-15 02:20:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:28,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-15 02:20:28,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-15 02:20:28,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=3921, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:20:28,653 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:31,594 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2022-02-15 02:20:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 02:20:31,594 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (2), 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 138 [2022-02-15 02:20:31,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:31,595 INFO L225 Difference]: With dead ends: 161 [2022-02-15 02:20:31,595 INFO L226 Difference]: Without dead ends: 150 [2022-02-15 02:20:31,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 43 SyntacticMatches, 33 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4130 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=711, Invalid=15291, Unknown=0, NotChecked=0, Total=16002 [2022-02-15 02:20:31,596 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 161 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6585 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 6725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 6585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:31,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 147 Invalid, 6725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 6585 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 02:20:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-02-15 02:20:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2022-02-15 02:20:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 139 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2022-02-15 02:20:31,669 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 138 [2022-02-15 02:20:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:31,669 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2022-02-15 02:20:31,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2022-02-15 02:20:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-15 02:20:31,669 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:31,669 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:31,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 02:20:31,670 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:31,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:31,670 INFO L85 PathProgramCache]: Analyzing trace with hash 167077131, now seen corresponding path program 57 times [2022-02-15 02:20:31,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:31,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567507780] [2022-02-15 02:20:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:32,306 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:32,348 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:32,381 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:32,436 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:32,470 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:32,503 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:32,550 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:32,550 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:34,383 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:34,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567507780] [2022-02-15 02:20:34,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [567507780] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:34,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:34,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-15 02:20:34,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065444480] [2022-02-15 02:20:34,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:34,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-15 02:20:34,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-15 02:20:34,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4048, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 02:20:34,385 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 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) [2022-02-15 02:20:37,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:37,412 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2022-02-15 02:20:37,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 02:20:37,412 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 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 141 [2022-02-15 02:20:37,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:37,413 INFO L225 Difference]: With dead ends: 163 [2022-02-15 02:20:37,413 INFO L226 Difference]: Without dead ends: 152 [2022-02-15 02:20:37,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 43 SyntacticMatches, 35 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4330 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=720, Invalid=15792, Unknown=0, NotChecked=0, Total=16512 [2022-02-15 02:20:37,414 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 201 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6765 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 6948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 6765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:37,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 62 Invalid, 6948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 6765 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 02:20:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-02-15 02:20:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2022-02-15 02:20:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.0285714285714285) internal successors, (144), 140 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) [2022-02-15 02:20:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2022-02-15 02:20:37,492 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 141 [2022-02-15 02:20:37,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:37,492 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2022-02-15 02:20:37,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 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) [2022-02-15 02:20:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2022-02-15 02:20:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-02-15 02:20:37,493 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:37,493 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:37,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 02:20:37,493 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:37,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1581155369, now seen corresponding path program 58 times [2022-02-15 02:20:37,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:37,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861405375] [2022-02-15 02:20:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:38,128 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:38,169 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:38,201 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:38,244 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:38,283 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:38,315 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:38,361 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:38,362 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:40,092 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:40,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861405375] [2022-02-15 02:20:40,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [861405375] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:40,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:40,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-15 02:20:40,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773841585] [2022-02-15 02:20:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:40,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-15 02:20:40,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:40,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-15 02:20:40,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=4177, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:20:40,094 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand has 67 states, 67 states have (on average 2.08955223880597) internal successors, (140), 66 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) [2022-02-15 02:20:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:43,336 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2022-02-15 02:20:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-15 02:20:43,336 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.08955223880597) internal successors, (140), 66 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 143 [2022-02-15 02:20:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:43,337 INFO L225 Difference]: With dead ends: 165 [2022-02-15 02:20:43,337 INFO L226 Difference]: Without dead ends: 154 [2022-02-15 02:20:43,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 53 SyntacticMatches, 26 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4394 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=729, Invalid=16301, Unknown=0, NotChecked=0, Total=17030 [2022-02-15 02:20:43,338 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 165 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 7658 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 7802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 7658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:43,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 227 Invalid, 7802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 7658 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 02:20:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-02-15 02:20:43,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2022-02-15 02:20:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2022-02-15 02:20:43,418 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 143 [2022-02-15 02:20:43,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:43,418 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2022-02-15 02:20:43,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.08955223880597) internal successors, (140), 66 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) [2022-02-15 02:20:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2022-02-15 02:20:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-02-15 02:20:43,419 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:43,419 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:43,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 02:20:43,419 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:43,419 INFO L85 PathProgramCache]: Analyzing trace with hash -994290745, now seen corresponding path program 59 times [2022-02-15 02:20:43,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:43,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453958111] [2022-02-15 02:20:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:44,071 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:44,109 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:44,141 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:44,185 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:44,218 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:44,250 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:44,297 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:44,297 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:46,357 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:46,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453958111] [2022-02-15 02:20:46,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1453958111] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:46,358 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:46,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-15 02:20:46,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290280098] [2022-02-15 02:20:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:46,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-15 02:20:46,358 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:46,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-15 02:20:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4308, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 02:20:46,359 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 67 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) [2022-02-15 02:20:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:49,463 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2022-02-15 02:20:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 02:20:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 67 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 145 [2022-02-15 02:20:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:49,469 INFO L225 Difference]: With dead ends: 167 [2022-02-15 02:20:49,469 INFO L226 Difference]: Without dead ends: 156 [2022-02-15 02:20:49,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 40 SyntacticMatches, 40 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4821 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=738, Invalid=16818, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 02:20:49,470 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 168 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 6812 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 6958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 6812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:49,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 102 Invalid, 6958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 6812 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 02:20:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-02-15 02:20:49,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2022-02-15 02:20:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 144 states have (on average 1.0277777777777777) internal successors, (148), 144 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2022-02-15 02:20:49,548 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 145 [2022-02-15 02:20:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:49,548 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 151 transitions. [2022-02-15 02:20:49,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 67 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) [2022-02-15 02:20:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 151 transitions. [2022-02-15 02:20:49,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-02-15 02:20:49,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:49,549 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:49,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-15 02:20:49,549 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:49,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:49,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2096843803, now seen corresponding path program 60 times [2022-02-15 02:20:49,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:49,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929719966] [2022-02-15 02:20:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:50,181 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,230 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,264 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,308 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,346 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,378 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,425 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:50,425 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:52,305 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:52,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929719966] [2022-02-15 02:20:52,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [929719966] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:52,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:52,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-15 02:20:52,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434311377] [2022-02-15 02:20:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:52,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-15 02:20:52,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-15 02:20:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=4441, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:20:52,306 INFO L87 Difference]: Start difference. First operand 148 states and 151 transitions. Second operand has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 68 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) [2022-02-15 02:20:55,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:55,780 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2022-02-15 02:20:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 02:20:55,780 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 68 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 147 [2022-02-15 02:20:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:55,781 INFO L225 Difference]: With dead ends: 169 [2022-02-15 02:20:55,781 INFO L226 Difference]: Without dead ends: 158 [2022-02-15 02:20:55,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 48 SyntacticMatches, 33 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4776 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=747, Invalid=17343, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 02:20:55,782 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 207 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 8282 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 8471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 8282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:55,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 62 Invalid, 8471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 8282 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:20:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-02-15 02:20:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2022-02-15 02:20:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 146 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2022-02-15 02:20:55,866 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 147 [2022-02-15 02:20:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:55,866 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2022-02-15 02:20:55,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 68 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) [2022-02-15 02:20:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2022-02-15 02:20:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-02-15 02:20:55,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:55,867 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:55,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-15 02:20:55,867 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash -793410429, now seen corresponding path program 61 times [2022-02-15 02:20:55,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:55,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284293363] [2022-02-15 02:20:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:56,488 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:56,521 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:56,553 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:56,606 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:56,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:56,670 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:56,718 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:20:56,718 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:20:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:58,696 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:58,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284293363] [2022-02-15 02:20:58,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [284293363] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:58,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:58,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-15 02:20:58,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774380790] [2022-02-15 02:20:58,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:58,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-15 02:20:58,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:58,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-15 02:20:58,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4576, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 02:20:58,698 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 70 states, 70 states have (on average 2.085714285714286) internal successors, (146), 69 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) [2022-02-15 02:21:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:01,999 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2022-02-15 02:21:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-15 02:21:01,999 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.085714285714286) internal successors, (146), 69 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 149 [2022-02-15 02:21:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:02,000 INFO L225 Difference]: With dead ends: 171 [2022-02-15 02:21:02,000 INFO L226 Difference]: Without dead ends: 160 [2022-02-15 02:21:02,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 52 SyntacticMatches, 30 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5063 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=756, Invalid=17876, Unknown=0, NotChecked=0, Total=18632 [2022-02-15 02:21:02,001 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 164 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 7293 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 7437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 7293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:02,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 127 Invalid, 7437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 7293 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 02:21:02,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-02-15 02:21:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2022-02-15 02:21:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 148 states have (on average 1.027027027027027) internal successors, (152), 148 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2022-02-15 02:21:02,082 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 149 [2022-02-15 02:21:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:02,083 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2022-02-15 02:21:02,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.085714285714286) internal successors, (146), 69 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) [2022-02-15 02:21:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2022-02-15 02:21:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-15 02:21:02,083 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:02,083 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:02,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-15 02:21:02,084 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1970578849, now seen corresponding path program 62 times [2022-02-15 02:21:02,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:02,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580832449] [2022-02-15 02:21:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:02,722 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:02,756 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:02,788 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:02,831 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:02,865 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:02,904 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:02,951 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:02,951 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:02,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:04,973 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:04,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580832449] [2022-02-15 02:21:04,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1580832449] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:04,973 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:04,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-15 02:21:04,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296529921] [2022-02-15 02:21:04,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:04,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-15 02:21:04,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:04,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-15 02:21:04,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=4713, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:21:04,974 INFO L87 Difference]: Start difference. First operand 152 states and 155 transitions. Second operand has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 70 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) [2022-02-15 02:21:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:08,486 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2022-02-15 02:21:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-15 02:21:08,486 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 70 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 151 [2022-02-15 02:21:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:08,487 INFO L225 Difference]: With dead ends: 175 [2022-02-15 02:21:08,487 INFO L226 Difference]: Without dead ends: 164 [2022-02-15 02:21:08,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 52 SyntacticMatches, 31 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5224 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=765, Invalid=18417, Unknown=0, NotChecked=0, Total=19182 [2022-02-15 02:21:08,488 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 175 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 8147 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 8302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 8147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:08,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 167 Invalid, 8302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 8147 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:21:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-15 02:21:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2022-02-15 02:21:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.0263157894736843) internal successors, (156), 152 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2022-02-15 02:21:08,585 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 151 [2022-02-15 02:21:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:08,585 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2022-02-15 02:21:08,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 70 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) [2022-02-15 02:21:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2022-02-15 02:21:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-02-15 02:21:08,586 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:08,586 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:08,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-15 02:21:08,586 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:08,587 INFO L85 PathProgramCache]: Analyzing trace with hash -420481217, now seen corresponding path program 63 times [2022-02-15 02:21:08,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:08,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337176143] [2022-02-15 02:21:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:09,201 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,235 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,267 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,341 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,375 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,407 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,458 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:09,458 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:09,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:11,462 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:11,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337176143] [2022-02-15 02:21:11,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [337176143] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:11,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:11,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-15 02:21:11,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665906890] [2022-02-15 02:21:11,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:11,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-15 02:21:11,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:11,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-15 02:21:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=4852, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 02:21:11,464 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 71 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) [2022-02-15 02:21:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:14,957 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2022-02-15 02:21:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 02:21:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 71 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 153 [2022-02-15 02:21:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:14,958 INFO L225 Difference]: With dead ends: 176 [2022-02-15 02:21:14,958 INFO L226 Difference]: Without dead ends: 165 [2022-02-15 02:21:14,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 56 SyntacticMatches, 28 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5217 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=774, Invalid=18966, Unknown=0, NotChecked=0, Total=19740 [2022-02-15 02:21:14,959 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 167 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 7744 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 7894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 7744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:14,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 207 Invalid, 7894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 7744 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:21:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-02-15 02:21:15,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 158. [2022-02-15 02:21:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.025974025974026) internal successors, (158), 154 states have internal predecessors, (158), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 161 transitions. [2022-02-15 02:21:15,047 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 161 transitions. Word has length 153 [2022-02-15 02:21:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:15,047 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 161 transitions. [2022-02-15 02:21:15,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 71 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) [2022-02-15 02:21:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 161 transitions. [2022-02-15 02:21:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-02-15 02:21:15,048 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:15,048 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:15,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-15 02:21:15,048 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1733141550, now seen corresponding path program 64 times [2022-02-15 02:21:15,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:15,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009347070] [2022-02-15 02:21:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:15,673 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:15,719 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:15,751 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:15,795 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:15,835 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:15,867 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:15,916 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:15,916 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:15,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:18,023 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:18,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009347070] [2022-02-15 02:21:18,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2009347070] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:18,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:18,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-15 02:21:18,023 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259596416] [2022-02-15 02:21:18,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:18,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-15 02:21:18,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-15 02:21:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4993, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:21:18,025 INFO L87 Difference]: Start difference. First operand 158 states and 161 transitions. Second operand has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:21,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:21,967 INFO L93 Difference]: Finished difference Result 178 states and 188 transitions. [2022-02-15 02:21:21,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 02:21:21,968 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 1 states have call successors, (2), 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 156 [2022-02-15 02:21:21,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:21,968 INFO L225 Difference]: With dead ends: 178 [2022-02-15 02:21:21,968 INFO L226 Difference]: Without dead ends: 167 [2022-02-15 02:21:21,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 52 SyntacticMatches, 34 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5475 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=783, Invalid=19523, Unknown=0, NotChecked=0, Total=20306 [2022-02-15 02:21:21,969 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 222 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9543 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 9748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 9543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:21,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 67 Invalid, 9748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 9543 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 02:21:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-02-15 02:21:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2022-02-15 02:21:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.0258064516129033) internal successors, (159), 155 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) [2022-02-15 02:21:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2022-02-15 02:21:22,058 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 156 [2022-02-15 02:21:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:22,058 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2022-02-15 02:21:22,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2022-02-15 02:21:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-02-15 02:21:22,058 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:22,059 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:22,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-15 02:21:22,059 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash -964458868, now seen corresponding path program 65 times [2022-02-15 02:21:22,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:22,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810552066] [2022-02-15 02:21:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:22,687 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:22,736 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:22,768 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:22,811 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:22,849 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:22,881 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:22,930 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:22,930 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:25,135 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:25,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810552066] [2022-02-15 02:21:25,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1810552066] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:25,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:25,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-15 02:21:25,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93649242] [2022-02-15 02:21:25,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:25,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-15 02:21:25,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-15 02:21:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=5136, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 02:21:25,136 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:28,735 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2022-02-15 02:21:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 02:21:28,735 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 1 states have call successors, (2), 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 158 [2022-02-15 02:21:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:28,736 INFO L225 Difference]: With dead ends: 180 [2022-02-15 02:21:28,736 INFO L226 Difference]: Without dead ends: 169 [2022-02-15 02:21:28,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 49 SyntacticMatches, 38 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5734 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=792, Invalid=20088, Unknown=0, NotChecked=0, Total=20880 [2022-02-15 02:21:28,737 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 179 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 7904 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 8064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 7904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:28,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 127 Invalid, 8064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 7904 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:21:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-15 02:21:28,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2022-02-15 02:21:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.0254777070063694) internal successors, (161), 157 states have internal predecessors, (161), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:28,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2022-02-15 02:21:28,832 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 158 [2022-02-15 02:21:28,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:28,833 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2022-02-15 02:21:28,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2022-02-15 02:21:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-02-15 02:21:28,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:28,833 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:28,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-15 02:21:28,833 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash 801786218, now seen corresponding path program 66 times [2022-02-15 02:21:28,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:28,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401754599] [2022-02-15 02:21:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:29,506 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:29,550 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:29,587 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:29,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:29,677 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:29,713 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:29,773 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:29,773 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:32,139 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:32,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401754599] [2022-02-15 02:21:32,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [401754599] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:32,140 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:32,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-15 02:21:32,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235362697] [2022-02-15 02:21:32,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:32,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-15 02:21:32,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:32,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-15 02:21:32,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=5281, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:21:32,141 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:35,777 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2022-02-15 02:21:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 02:21:35,777 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 1 states have call successors, (2), 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 [2022-02-15 02:21:35,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:35,788 INFO L225 Difference]: With dead ends: 182 [2022-02-15 02:21:35,788 INFO L226 Difference]: Without dead ends: 171 [2022-02-15 02:21:35,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 47 SyntacticMatches, 41 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5987 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=801, Invalid=20661, Unknown=0, NotChecked=0, Total=21462 [2022-02-15 02:21:35,789 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 227 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7858 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 8067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 7858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:35,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 27 Invalid, 8067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 7858 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 02:21:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-02-15 02:21:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2022-02-15 02:21:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 159 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 166 transitions. [2022-02-15 02:21:35,887 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 166 transitions. Word has length 160 [2022-02-15 02:21:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:35,887 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 166 transitions. [2022-02-15 02:21:35,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:35,887 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 166 transitions. [2022-02-15 02:21:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-02-15 02:21:35,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:35,888 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:35,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-15 02:21:35,888 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1651231944, now seen corresponding path program 67 times [2022-02-15 02:21:35,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:35,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776256114] [2022-02-15 02:21:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:36,507 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:36,545 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:36,577 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:36,620 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:36,659 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:36,691 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:36,745 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:36,746 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:36,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:39,078 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:39,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776256114] [2022-02-15 02:21:39,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [776256114] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:39,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:39,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-15 02:21:39,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387130119] [2022-02-15 02:21:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:39,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-15 02:21:39,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-15 02:21:39,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=5428, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 02:21:39,080 INFO L87 Difference]: Start difference. First operand 163 states and 166 transitions. Second operand has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:43,133 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2022-02-15 02:21:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 02:21:43,133 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 1 states have call successors, (2), 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 162 [2022-02-15 02:21:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:43,139 INFO L225 Difference]: With dead ends: 184 [2022-02-15 02:21:43,139 INFO L226 Difference]: Without dead ends: 173 [2022-02-15 02:21:43,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 48 SyntacticMatches, 41 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6058 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=810, Invalid=21242, Unknown=0, NotChecked=0, Total=22052 [2022-02-15 02:21:43,139 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 183 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 9204 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 9368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 9204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:43,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 167 Invalid, 9368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 9204 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 02:21:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-02-15 02:21:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2022-02-15 02:21:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 161 states have (on average 1.0248447204968945) internal successors, (165), 161 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2022-02-15 02:21:43,235 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 162 [2022-02-15 02:21:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:43,235 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2022-02-15 02:21:43,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2022-02-15 02:21:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-02-15 02:21:43,235 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:43,235 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:43,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-15 02:21:43,236 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1924788390, now seen corresponding path program 68 times [2022-02-15 02:21:43,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:43,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663686459] [2022-02-15 02:21:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:43,849 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:43,888 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:43,920 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:43,975 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:44,014 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:44,046 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:44,101 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:44,101 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:44,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:46,502 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:46,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663686459] [2022-02-15 02:21:46,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [663686459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:46,502 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:46,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-15 02:21:46,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954103266] [2022-02-15 02:21:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:46,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-15 02:21:46,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-15 02:21:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=5577, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:21:46,504 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:50,698 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2022-02-15 02:21:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-15 02:21:50,698 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 1 states have call successors, (2), 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 164 [2022-02-15 02:21:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:50,699 INFO L225 Difference]: With dead ends: 186 [2022-02-15 02:21:50,699 INFO L226 Difference]: Without dead ends: 175 [2022-02-15 02:21:50,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 52 SyntacticMatches, 38 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6322 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=819, Invalid=21831, Unknown=0, NotChecked=0, Total=22650 [2022-02-15 02:21:50,700 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 231 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10015 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 10228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 10015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:50,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 32 Invalid, 10228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 10015 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-15 02:21:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-02-15 02:21:50,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2022-02-15 02:21:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 163 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 170 transitions. [2022-02-15 02:21:50,797 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 170 transitions. Word has length 164 [2022-02-15 02:21:50,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:50,797 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 170 transitions. [2022-02-15 02:21:50,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 170 transitions. [2022-02-15 02:21:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-02-15 02:21:50,798 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:50,798 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:50,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-15 02:21:50,798 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:50,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1475439356, now seen corresponding path program 69 times [2022-02-15 02:21:50,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:50,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414344340] [2022-02-15 02:21:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:51,432 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:51,465 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:51,497 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:51,542 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:51,574 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:51,606 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:51,656 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:51,656 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:51,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:53,905 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:53,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414344340] [2022-02-15 02:21:53,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [414344340] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:53,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:53,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-15 02:21:53,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737436407] [2022-02-15 02:21:53,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:53,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-15 02:21:53,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-15 02:21:53,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=5728, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 02:21:53,907 INFO L87 Difference]: Start difference. First operand 167 states and 170 transitions. Second operand has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:58,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:58,165 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2022-02-15 02:21:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-15 02:21:58,165 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 1 states have call successors, (2), 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 166 [2022-02-15 02:21:58,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:58,166 INFO L225 Difference]: With dead ends: 190 [2022-02-15 02:21:58,166 INFO L226 Difference]: Without dead ends: 179 [2022-02-15 02:21:58,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 60 SyntacticMatches, 31 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6219 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=828, Invalid=22428, Unknown=0, NotChecked=0, Total=23256 [2022-02-15 02:21:58,167 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 228 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 10100 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 10313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 10100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:58,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 102 Invalid, 10313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 10100 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-15 02:21:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-02-15 02:21:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2022-02-15 02:21:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 167 states have (on average 1.0239520958083832) internal successors, (171), 167 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2022-02-15 02:21:58,277 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 166 [2022-02-15 02:21:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:58,277 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2022-02-15 02:21:58,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2022-02-15 02:21:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-15 02:21:58,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:58,278 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:58,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-15 02:21:58,278 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:58,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash -624191006, now seen corresponding path program 70 times [2022-02-15 02:21:58,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:58,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8735740] [2022-02-15 02:21:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:58,906 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:58,944 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:58,976 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:59,019 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:59,057 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:59,089 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:59,140 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:21:59,140 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:21:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:01,602 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:01,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8735740] [2022-02-15 02:22:01,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [8735740] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:01,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:01,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-15 02:22:01,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773804957] [2022-02-15 02:22:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:01,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-15 02:22:01,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-15 02:22:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=5881, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:22:01,603 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:05,884 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2022-02-15 02:22:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 02:22:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 1 states have call successors, (2), 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 168 [2022-02-15 02:22:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:05,885 INFO L225 Difference]: With dead ends: 191 [2022-02-15 02:22:05,885 INFO L226 Difference]: Without dead ends: 180 [2022-02-15 02:22:05,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 53 SyntacticMatches, 39 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6534 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=837, Invalid=23033, Unknown=0, NotChecked=0, Total=23870 [2022-02-15 02:22:05,886 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 234 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9995 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 9995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:05,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 17 Invalid, 10214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 9995 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-15 02:22:05,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-02-15 02:22:05,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 173. [2022-02-15 02:22:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 169 states have (on average 1.0236686390532543) internal successors, (173), 169 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 176 transitions. [2022-02-15 02:22:05,989 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 176 transitions. Word has length 168 [2022-02-15 02:22:05,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:05,989 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 176 transitions. [2022-02-15 02:22:05,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 176 transitions. [2022-02-15 02:22:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-02-15 02:22:05,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:05,990 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:05,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-15 02:22:05,990 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1803606699, now seen corresponding path program 71 times [2022-02-15 02:22:05,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:05,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292540450] [2022-02-15 02:22:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:06,610 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:06,650 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:06,682 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:06,726 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:06,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:06,800 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:06,851 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:06,852 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:06,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:09,379 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:09,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292540450] [2022-02-15 02:22:09,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1292540450] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:09,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:09,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-15 02:22:09,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339724139] [2022-02-15 02:22:09,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:09,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-15 02:22:09,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:09,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-15 02:22:09,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=6036, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 02:22:09,381 INFO L87 Difference]: Start difference. First operand 173 states and 176 transitions. Second operand has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 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) [2022-02-15 02:22:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:13,938 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2022-02-15 02:22:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-15 02:22:13,939 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 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 171 [2022-02-15 02:22:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:13,939 INFO L225 Difference]: With dead ends: 193 [2022-02-15 02:22:13,939 INFO L226 Difference]: Without dead ends: 182 [2022-02-15 02:22:13,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 52 SyntacticMatches, 42 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6859 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=846, Invalid=23646, Unknown=0, NotChecked=0, Total=24492 [2022-02-15 02:22:13,941 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 229 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11005 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 11220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 11005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:13,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 62 Invalid, 11220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 11005 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-15 02:22:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-15 02:22:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2022-02-15 02:22:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 170 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) [2022-02-15 02:22:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2022-02-15 02:22:14,050 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 171 [2022-02-15 02:22:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:14,051 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2022-02-15 02:22:14,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 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) [2022-02-15 02:22:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2022-02-15 02:22:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-02-15 02:22:14,051 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:14,051 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:14,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-15 02:22:14,051 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1966927415, now seen corresponding path program 72 times [2022-02-15 02:22:14,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:14,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386907] [2022-02-15 02:22:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:14,676 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:14,718 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:14,750 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:14,797 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:14,840 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:14,873 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:14,945 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:14,945 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:14,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:14,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:17,600 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:17,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386907] [2022-02-15 02:22:17,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [386907] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:17,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:17,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-15 02:22:17,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240140718] [2022-02-15 02:22:17,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:17,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-15 02:22:17,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-15 02:22:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=6193, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:22:17,601 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand has 81 states, 81 states have (on average 2.0987654320987654) internal successors, (170), 80 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) [2022-02-15 02:22:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:22,133 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2022-02-15 02:22:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 02:22:22,133 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0987654320987654) internal successors, (170), 80 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 173 [2022-02-15 02:22:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:22,134 INFO L225 Difference]: With dead ends: 195 [2022-02-15 02:22:22,134 INFO L226 Difference]: Without dead ends: 184 [2022-02-15 02:22:22,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 53 SyntacticMatches, 42 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7016 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=855, Invalid=24267, Unknown=0, NotChecked=0, Total=25122 [2022-02-15 02:22:22,135 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 222 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10672 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 10883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 10672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:22,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 172 Invalid, 10883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 10672 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 02:22:22,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-15 02:22:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 176. [2022-02-15 02:22:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.0232558139534884) internal successors, (176), 172 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 179 transitions. [2022-02-15 02:22:22,249 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 179 transitions. Word has length 173 [2022-02-15 02:22:22,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:22,249 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 179 transitions. [2022-02-15 02:22:22,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.0987654320987654) internal successors, (170), 80 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) [2022-02-15 02:22:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 179 transitions. [2022-02-15 02:22:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-02-15 02:22:22,250 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:22,250 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:22,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-15 02:22:22,250 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash -497813145, now seen corresponding path program 73 times [2022-02-15 02:22:22,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:22,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687187982] [2022-02-15 02:22:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:22,880 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:22,915 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:22,950 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,000 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,035 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,069 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,125 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:23,125 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:23,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:25,762 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:25,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687187982] [2022-02-15 02:22:25,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [687187982] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:25,763 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:25,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-15 02:22:25,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226157570] [2022-02-15 02:22:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:25,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-15 02:22:25,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-15 02:22:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=6352, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 02:22:25,764 INFO L87 Difference]: Start difference. First operand 176 states and 179 transitions. Second operand has 82 states, 82 states have (on average 2.097560975609756) internal successors, (172), 81 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) [2022-02-15 02:22:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:30,653 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2022-02-15 02:22:30,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-15 02:22:30,653 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.097560975609756) internal successors, (172), 81 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 175 [2022-02-15 02:22:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:30,654 INFO L225 Difference]: With dead ends: 197 [2022-02-15 02:22:30,654 INFO L226 Difference]: Without dead ends: 186 [2022-02-15 02:22:30,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 55 SyntacticMatches, 41 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7158 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=864, Invalid=24896, Unknown=0, NotChecked=0, Total=25760 [2022-02-15 02:22:30,655 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 195 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 12018 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 12196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 12018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:30,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 327 Invalid, 12196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 12018 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-15 02:22:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-02-15 02:22:30,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2022-02-15 02:22:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 174 states have (on average 1.0229885057471264) internal successors, (178), 174 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2022-02-15 02:22:30,768 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 175 [2022-02-15 02:22:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:30,769 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 181 transitions. [2022-02-15 02:22:30,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.097560975609756) internal successors, (172), 81 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) [2022-02-15 02:22:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 181 transitions. [2022-02-15 02:22:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-02-15 02:22:30,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:30,769 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:30,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-15 02:22:30,769 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1723240059, now seen corresponding path program 74 times [2022-02-15 02:22:30,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:30,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097094938] [2022-02-15 02:22:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:31,380 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,413 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,446 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,490 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,522 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,554 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,605 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:31,605 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:31,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:34,247 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:34,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097094938] [2022-02-15 02:22:34,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2097094938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:34,248 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:34,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-15 02:22:34,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9293823] [2022-02-15 02:22:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:34,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-15 02:22:34,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:34,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-15 02:22:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=6513, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:22:34,249 INFO L87 Difference]: Start difference. First operand 178 states and 181 transitions. Second operand has 83 states, 83 states have (on average 2.0963855421686746) internal successors, (174), 82 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) [2022-02-15 02:22:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:38,906 INFO L93 Difference]: Finished difference Result 199 states and 209 transitions. [2022-02-15 02:22:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-15 02:22:38,907 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0963855421686746) internal successors, (174), 82 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 177 [2022-02-15 02:22:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:38,907 INFO L225 Difference]: With dead ends: 199 [2022-02-15 02:22:38,907 INFO L226 Difference]: Without dead ends: 188 [2022-02-15 02:22:38,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 62 SyntacticMatches, 35 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7451 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=873, Invalid=25533, Unknown=0, NotChecked=0, Total=26406 [2022-02-15 02:22:38,908 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 189 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 10870 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 11044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 10870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:38,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 257 Invalid, 11044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 10870 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 02:22:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-02-15 02:22:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 180. [2022-02-15 02:22:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 176 states have (on average 1.0227272727272727) internal successors, (180), 176 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 183 transitions. [2022-02-15 02:22:39,024 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 183 transitions. Word has length 177 [2022-02-15 02:22:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:39,024 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 183 transitions. [2022-02-15 02:22:39,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0963855421686746) internal successors, (174), 82 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) [2022-02-15 02:22:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 183 transitions. [2022-02-15 02:22:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-02-15 02:22:39,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:39,024 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:39,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-15 02:22:39,025 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1757501987, now seen corresponding path program 75 times [2022-02-15 02:22:39,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:39,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031345602] [2022-02-15 02:22:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:39,637 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:39,670 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:39,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:39,745 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:39,780 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:39,811 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:39,863 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:39,864 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:39,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:39,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:42,876 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:42,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031345602] [2022-02-15 02:22:42,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031345602] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:42,876 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:42,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-15 02:22:42,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339110707] [2022-02-15 02:22:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:42,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-15 02:22:42,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-15 02:22:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=6676, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 02:22:42,877 INFO L87 Difference]: Start difference. First operand 180 states and 183 transitions. Second operand has 84 states, 84 states have (on average 2.0952380952380953) internal successors, (176), 83 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) [2022-02-15 02:22:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:47,569 INFO L93 Difference]: Finished difference Result 201 states and 211 transitions. [2022-02-15 02:22:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 02:22:47,569 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0952380952380953) internal successors, (176), 83 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 179 [2022-02-15 02:22:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:47,570 INFO L225 Difference]: With dead ends: 201 [2022-02-15 02:22:47,570 INFO L226 Difference]: Without dead ends: 190 [2022-02-15 02:22:47,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 44 SyntacticMatches, 54 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7908 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=882, Invalid=26178, Unknown=0, NotChecked=0, Total=27060 [2022-02-15 02:22:47,572 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 199 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 10621 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 10803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 10621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:47,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 167 Invalid, 10803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 10621 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 02:22:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-02-15 02:22:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2022-02-15 02:22:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 178 states have (on average 1.0224719101123596) internal successors, (182), 178 states have internal predecessors, (182), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2022-02-15 02:22:47,695 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 179 [2022-02-15 02:22:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:47,695 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2022-02-15 02:22:47,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0952380952380953) internal successors, (176), 83 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) [2022-02-15 02:22:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2022-02-15 02:22:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-02-15 02:22:47,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:47,696 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:47,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-15 02:22:47,696 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:47,696 INFO L85 PathProgramCache]: Analyzing trace with hash 971084609, now seen corresponding path program 76 times [2022-02-15 02:22:47,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:47,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723894366] [2022-02-15 02:22:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:48,332 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,365 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,397 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,440 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,474 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,506 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,566 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:48,566 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:51,448 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:51,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723894366] [2022-02-15 02:22:51,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [723894366] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:51,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:51,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-15 02:22:51,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683042946] [2022-02-15 02:22:51,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:51,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-15 02:22:51,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-15 02:22:51,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=6841, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:22:51,450 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand has 85 states, 85 states have (on average 2.0941176470588236) internal successors, (178), 84 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) [2022-02-15 02:22:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:56,652 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2022-02-15 02:22:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-15 02:22:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0941176470588236) internal successors, (178), 84 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 181 [2022-02-15 02:22:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:56,653 INFO L225 Difference]: With dead ends: 205 [2022-02-15 02:22:56,653 INFO L226 Difference]: Without dead ends: 194 [2022-02-15 02:22:56,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 55 SyntacticMatches, 44 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7925 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=891, Invalid=26831, Unknown=0, NotChecked=0, Total=27722 [2022-02-15 02:22:56,654 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 234 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 12724 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 12947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 12724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:56,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 187 Invalid, 12947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 12724 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-15 02:22:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-02-15 02:22:56,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 186. [2022-02-15 02:22:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.021978021978022) internal successors, (186), 182 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 189 transitions. [2022-02-15 02:22:56,772 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 189 transitions. Word has length 181 [2022-02-15 02:22:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:56,772 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 189 transitions. [2022-02-15 02:22:56,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.0941176470588236) internal successors, (178), 84 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) [2022-02-15 02:22:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 189 transitions. [2022-02-15 02:22:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-02-15 02:22:56,773 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:56,773 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:56,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-15 02:22:56,773 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1138228447, now seen corresponding path program 77 times [2022-02-15 02:22:56,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:56,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047208893] [2022-02-15 02:22:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:57,388 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,429 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,460 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,503 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,542 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,574 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,626 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:22:57,626 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:22:57,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:00,422 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:00,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047208893] [2022-02-15 02:23:00,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1047208893] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:00,423 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:00,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-15 02:23:00,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271231280] [2022-02-15 02:23:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:00,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-15 02:23:00,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:00,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-15 02:23:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=7008, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 02:23:00,424 INFO L87 Difference]: Start difference. First operand 186 states and 189 transitions. Second operand has 86 states, 86 states have (on average 2.0930232558139537) internal successors, (180), 85 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) [2022-02-15 02:23:05,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:05,719 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2022-02-15 02:23:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-15 02:23:05,720 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0930232558139537) internal successors, (180), 85 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 183 [2022-02-15 02:23:05,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:05,720 INFO L225 Difference]: With dead ends: 206 [2022-02-15 02:23:05,720 INFO L226 Difference]: Without dead ends: 195 [2022-02-15 02:23:05,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 64 SyntacticMatches, 36 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7955 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=900, Invalid=27492, Unknown=0, NotChecked=0, Total=28392 [2022-02-15 02:23:05,722 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 248 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 13038 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 13273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 13038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:05,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 187 Invalid, 13273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 13038 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-15 02:23:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-02-15 02:23:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 188. [2022-02-15 02:23:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 1.0217391304347827) internal successors, (188), 184 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:05,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2022-02-15 02:23:05,848 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 183 [2022-02-15 02:23:05,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:05,848 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2022-02-15 02:23:05,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.0930232558139537) internal successors, (180), 85 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) [2022-02-15 02:23:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2022-02-15 02:23:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-02-15 02:23:05,848 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:05,849 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:05,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-15 02:23:05,849 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:05,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:05,849 INFO L85 PathProgramCache]: Analyzing trace with hash 66337422, now seen corresponding path program 78 times [2022-02-15 02:23:05,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:05,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822071153] [2022-02-15 02:23:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:06,497 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:06,540 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:06,575 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:06,624 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:06,667 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:06,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:06,760 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:06,761 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:09,673 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:09,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822071153] [2022-02-15 02:23:09,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1822071153] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:09,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:09,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-15 02:23:09,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844194747] [2022-02-15 02:23:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:09,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-15 02:23:09,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-15 02:23:09,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=7177, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:23:09,675 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:15,143 INFO L93 Difference]: Finished difference Result 208 states and 218 transitions. [2022-02-15 02:23:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 02:23:15,144 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 1 states have call successors, (2), 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 186 [2022-02-15 02:23:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:15,144 INFO L225 Difference]: With dead ends: 208 [2022-02-15 02:23:15,144 INFO L226 Difference]: Without dead ends: 197 [2022-02-15 02:23:15,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 65 SyntacticMatches, 37 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8280 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=909, Invalid=28161, Unknown=0, NotChecked=0, Total=29070 [2022-02-15 02:23:15,145 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 242 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 13613 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 13844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 13613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:15,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 87 Invalid, 13844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 13613 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 02:23:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-02-15 02:23:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2022-02-15 02:23:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 185 states have (on average 1.0216216216216216) internal successors, (189), 185 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) [2022-02-15 02:23:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2022-02-15 02:23:15,266 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 186 [2022-02-15 02:23:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:15,266 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2022-02-15 02:23:15,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2022-02-15 02:23:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-02-15 02:23:15,267 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:15,267 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:15,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-15 02:23:15,267 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:15,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash -740424468, now seen corresponding path program 79 times [2022-02-15 02:23:15,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:15,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109409206] [2022-02-15 02:23:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:15,901 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:15,933 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:15,965 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:16,013 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:16,047 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:16,080 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:16,135 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:16,135 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:16,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:19,194 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:19,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109409206] [2022-02-15 02:23:19,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1109409206] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:19,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:19,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-15 02:23:19,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587590218] [2022-02-15 02:23:19,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:19,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-15 02:23:19,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-15 02:23:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=7348, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 02:23:19,196 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand has 88 states, 88 states have (on average 2.102272727272727) internal successors, (185), 87 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:24,454 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2022-02-15 02:23:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 02:23:24,454 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.102272727272727) internal successors, (185), 87 states have internal predecessors, (185), 1 states have call successors, (2), 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 188 [2022-02-15 02:23:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:24,455 INFO L225 Difference]: With dead ends: 210 [2022-02-15 02:23:24,455 INFO L226 Difference]: Without dead ends: 199 [2022-02-15 02:23:24,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 59 SyntacticMatches, 44 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8516 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=918, Invalid=28838, Unknown=0, NotChecked=0, Total=29756 [2022-02-15 02:23:24,457 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 253 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12188 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 12427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 12188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:24,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 22 Invalid, 12427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 12188 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 02:23:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-02-15 02:23:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2022-02-15 02:23:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 1.0213903743315509) internal successors, (191), 187 states have internal predecessors, (191), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2022-02-15 02:23:24,585 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 188 [2022-02-15 02:23:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:24,585 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 194 transitions. [2022-02-15 02:23:24,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.102272727272727) internal successors, (185), 87 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 194 transitions. [2022-02-15 02:23:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-02-15 02:23:24,586 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:24,586 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:24,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-15 02:23:24,586 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:24,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1350479818, now seen corresponding path program 80 times [2022-02-15 02:23:24,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:24,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327817339] [2022-02-15 02:23:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:25,256 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,300 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,336 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,387 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,434 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,470 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,527 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:25,527 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:25,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:25,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:28,466 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:28,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327817339] [2022-02-15 02:23:28,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1327817339] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:28,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:28,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-15 02:23:28,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900487076] [2022-02-15 02:23:28,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:28,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-15 02:23:28,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-15 02:23:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=7521, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:23:28,468 INFO L87 Difference]: Start difference. First operand 191 states and 194 transitions. Second operand has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:34,127 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2022-02-15 02:23:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 02:23:34,127 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 1 states have call successors, (2), 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 [2022-02-15 02:23:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:34,128 INFO L225 Difference]: With dead ends: 212 [2022-02-15 02:23:34,128 INFO L226 Difference]: Without dead ends: 201 [2022-02-15 02:23:34,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 65 SyntacticMatches, 39 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8438 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=927, Invalid=29523, Unknown=0, NotChecked=0, Total=30450 [2022-02-15 02:23:34,129 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 255 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13781 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 14022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 13781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:34,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 32 Invalid, 14022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 13781 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 02:23:34,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-02-15 02:23:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 193. [2022-02-15 02:23:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 1.0211640211640212) internal successors, (193), 189 states have internal predecessors, (193), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2022-02-15 02:23:34,260 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 190 [2022-02-15 02:23:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:34,260 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2022-02-15 02:23:34,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:34,260 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2022-02-15 02:23:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-02-15 02:23:34,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:34,261 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:34,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-15 02:23:34,261 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash 664804136, now seen corresponding path program 81 times [2022-02-15 02:23:34,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:34,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049870411] [2022-02-15 02:23:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:34,881 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:34,921 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:34,953 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:34,997 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,037 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,070 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,135 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:35,135 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:35,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:38,367 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:38,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049870411] [2022-02-15 02:23:38,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2049870411] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:38,367 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:38,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-15 02:23:38,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871833315] [2022-02-15 02:23:38,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:38,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-15 02:23:38,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-15 02:23:38,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=7696, Unknown=0, NotChecked=0, Total=8010 [2022-02-15 02:23:38,369 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand has 90 states, 90 states have (on average 2.1) internal successors, (189), 89 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:43,649 INFO L93 Difference]: Finished difference Result 214 states and 224 transitions. [2022-02-15 02:23:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-15 02:23:43,649 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.1) internal successors, (189), 89 states have internal predecessors, (189), 1 states have call successors, (2), 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 192 [2022-02-15 02:23:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:43,650 INFO L225 Difference]: With dead ends: 214 [2022-02-15 02:23:43,650 INFO L226 Difference]: Without dead ends: 203 [2022-02-15 02:23:43,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 60 SyntacticMatches, 45 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8889 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=936, Invalid=30216, Unknown=0, NotChecked=0, Total=31152 [2022-02-15 02:23:43,651 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 212 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 11752 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 11948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 11752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:43,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 147 Invalid, 11948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 11752 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-15 02:23:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-02-15 02:23:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2022-02-15 02:23:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.0209424083769634) internal successors, (195), 191 states have internal predecessors, (195), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 198 transitions. [2022-02-15 02:23:43,786 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 198 transitions. Word has length 192 [2022-02-15 02:23:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:43,787 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 198 transitions. [2022-02-15 02:23:43,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.1) internal successors, (189), 89 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 198 transitions. [2022-02-15 02:23:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-02-15 02:23:43,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:43,787 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:43,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-15 02:23:43,788 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1139529978, now seen corresponding path program 82 times [2022-02-15 02:23:43,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:43,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169719589] [2022-02-15 02:23:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:44,399 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,432 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,465 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,508 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,542 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,588 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,642 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:44,642 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:47,722 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:47,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169719589] [2022-02-15 02:23:47,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1169719589] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:47,722 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:47,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-15 02:23:47,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082539268] [2022-02-15 02:23:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:47,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-15 02:23:47,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-15 02:23:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=7873, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:23:47,724 INFO L87 Difference]: Start difference. First operand 195 states and 198 transitions. Second operand has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:53,154 INFO L93 Difference]: Finished difference Result 216 states and 226 transitions. [2022-02-15 02:23:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 02:23:53,154 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 1 states have call successors, (2), 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 194 [2022-02-15 02:23:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:53,155 INFO L225 Difference]: With dead ends: 216 [2022-02-15 02:23:53,155 INFO L226 Difference]: Without dead ends: 205 [2022-02-15 02:23:53,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 66 SyntacticMatches, 40 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8674 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=945, Invalid=30917, Unknown=0, NotChecked=0, Total=31862 [2022-02-15 02:23:53,156 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 213 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 12279 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 12477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 12279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:53,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 207 Invalid, 12477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 12279 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-15 02:23:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-02-15 02:23:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 197. [2022-02-15 02:23:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 193 states have (on average 1.0207253886010363) internal successors, (197), 193 states have internal predecessors, (197), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 200 transitions. [2022-02-15 02:23:53,287 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 200 transitions. Word has length 194 [2022-02-15 02:23:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:53,288 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 200 transitions. [2022-02-15 02:23:53,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 200 transitions. [2022-02-15 02:23:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-02-15 02:23:53,288 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:53,288 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:53,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-15 02:23:53,289 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 62174052, now seen corresponding path program 83 times [2022-02-15 02:23:53,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:53,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560782629] [2022-02-15 02:23:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:53,919 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:53,960 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:53,992 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,038 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,077 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,110 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,165 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:23:54,165 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:23:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:57,540 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:57,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560782629] [2022-02-15 02:23:57,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1560782629] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:57,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:57,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-15 02:23:57,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075807730] [2022-02-15 02:23:57,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:57,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-15 02:23:57,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:57,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-15 02:23:57,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=8052, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 02:23:57,542 INFO L87 Difference]: Start difference. First operand 197 states and 200 transitions. Second operand has 92 states, 92 states have (on average 2.097826086956522) internal successors, (193), 91 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:03,398 INFO L93 Difference]: Finished difference Result 222 states and 234 transitions. [2022-02-15 02:24:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-15 02:24:03,398 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.097826086956522) internal successors, (193), 91 states have internal predecessors, (193), 1 states have call successors, (2), 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 196 [2022-02-15 02:24:03,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:03,399 INFO L225 Difference]: With dead ends: 222 [2022-02-15 02:24:03,399 INFO L226 Difference]: Without dead ends: 211 [2022-02-15 02:24:03,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 61 SyntacticMatches, 46 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9201 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=954, Invalid=31626, Unknown=0, NotChecked=0, Total=32580 [2022-02-15 02:24:03,400 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 220 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 13788 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 13995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 13788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:03,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 292 Invalid, 13995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 13788 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 02:24:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-02-15 02:24:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 203. [2022-02-15 02:24:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 1.020100502512563) internal successors, (203), 199 states have internal predecessors, (203), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 206 transitions. [2022-02-15 02:24:03,544 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 206 transitions. Word has length 196 [2022-02-15 02:24:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 206 transitions. [2022-02-15 02:24:03,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.097826086956522) internal successors, (193), 91 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 206 transitions. [2022-02-15 02:24:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-02-15 02:24:03,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:03,545 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:03,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-15 02:24:03,545 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash -446455742, now seen corresponding path program 84 times [2022-02-15 02:24:03,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:03,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751541561] [2022-02-15 02:24:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:04,194 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:04,227 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:04,259 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:04,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:04,336 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:04,369 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:04,424 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:04,424 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:04,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:07,570 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:07,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751541561] [2022-02-15 02:24:07,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [751541561] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:07,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:07,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-15 02:24:07,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935536988] [2022-02-15 02:24:07,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:07,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-15 02:24:07,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-15 02:24:07,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=8233, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:24:07,572 INFO L87 Difference]: Start difference. First operand 203 states and 206 transitions. Second operand has 93 states, 93 states have (on average 2.096774193548387) internal successors, (195), 92 states have internal predecessors, (195), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:13,871 INFO L93 Difference]: Finished difference Result 223 states and 233 transitions. [2022-02-15 02:24:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-15 02:24:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.096774193548387) internal successors, (195), 92 states have internal predecessors, (195), 1 states have call successors, (2), 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 198 [2022-02-15 02:24:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:13,872 INFO L225 Difference]: With dead ends: 223 [2022-02-15 02:24:13,872 INFO L226 Difference]: Without dead ends: 212 [2022-02-15 02:24:13,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 72 SyntacticMatches, 36 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9115 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=963, Invalid=32343, Unknown=0, NotChecked=0, Total=33306 [2022-02-15 02:24:13,874 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 211 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 15590 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 15790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 15590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:13,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 372 Invalid, 15790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 15590 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-02-15 02:24:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-02-15 02:24:14,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2022-02-15 02:24:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 201 states have (on average 1.0199004975124377) internal successors, (205), 201 states have internal predecessors, (205), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2022-02-15 02:24:14,019 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 198 [2022-02-15 02:24:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:14,019 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2022-02-15 02:24:14,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.096774193548387) internal successors, (195), 92 states have internal predecessors, (195), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2022-02-15 02:24:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-02-15 02:24:14,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:14,020 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 12, 12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:14,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-15 02:24:14,020 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:14,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1511468783, now seen corresponding path program 85 times [2022-02-15 02:24:14,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:14,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538725608] [2022-02-15 02:24:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:14,622 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:14,666 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:14,698 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:14,743 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:14,776 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:14,808 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:14,863 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:14,864 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:14,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:18,755 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:18,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538725608] [2022-02-15 02:24:18,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [538725608] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:18,756 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:18,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-15 02:24:18,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426050194] [2022-02-15 02:24:18,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:18,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-15 02:24:18,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:18,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-15 02:24:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=8416, Unknown=0, NotChecked=0, Total=8742 [2022-02-15 02:24:18,757 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 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) [2022-02-15 02:24:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:24,874 INFO L93 Difference]: Finished difference Result 224 states and 234 transitions. [2022-02-15 02:24:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-15 02:24:24,874 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 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 201 [2022-02-15 02:24:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:24,875 INFO L225 Difference]: With dead ends: 224 [2022-02-15 02:24:24,875 INFO L226 Difference]: Without dead ends: 213 [2022-02-15 02:24:24,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 46 SyntacticMatches, 64 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10080 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=972, Invalid=33068, Unknown=0, NotChecked=0, Total=34040 [2022-02-15 02:24:24,876 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 248 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14401 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 14644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 14401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:24,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 192 Invalid, 14644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 14401 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-15 02:24:24,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-02-15 02:24:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 206. [2022-02-15 02:24:25,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.0198019801980198) internal successors, (206), 202 states have internal predecessors, (206), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 209 transitions. [2022-02-15 02:24:25,024 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 209 transitions. Word has length 201 [2022-02-15 02:24:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:25,024 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 209 transitions. [2022-02-15 02:24:25,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 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) [2022-02-15 02:24:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 209 transitions. [2022-02-15 02:24:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-02-15 02:24:25,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:25,025 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:25,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-15 02:24:25,025 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash -401142146, now seen corresponding path program 86 times [2022-02-15 02:24:25,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:25,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572901295] [2022-02-15 02:24:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:25,656 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:25,688 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:25,721 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:25,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:25,782 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:25,786 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:25,786 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:24:25,825 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:25,826 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:29,541 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:29,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572901295] [2022-02-15 02:24:29,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [572901295] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:29,542 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:29,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-15 02:24:29,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733404902] [2022-02-15 02:24:29,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:29,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-15 02:24:29,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-15 02:24:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=8601, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 02:24:29,543 INFO L87 Difference]: Start difference. First operand 206 states and 209 transitions. Second operand has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:36,126 INFO L93 Difference]: Finished difference Result 226 states and 236 transitions. [2022-02-15 02:24:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 02:24:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 1 states have call successors, (2), 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 204 [2022-02-15 02:24:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:36,127 INFO L225 Difference]: With dead ends: 226 [2022-02-15 02:24:36,127 INFO L226 Difference]: Without dead ends: 215 [2022-02-15 02:24:36,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 57 SyntacticMatches, 55 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10017 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=981, Invalid=33801, Unknown=0, NotChecked=0, Total=34782 [2022-02-15 02:24:36,129 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 259 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15936 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 16187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 15936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:36,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 27 Invalid, 16187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 15936 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-02-15 02:24:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-02-15 02:24:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2022-02-15 02:24:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 203 states have (on average 1.019704433497537) internal successors, (207), 203 states have internal predecessors, (207), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 210 transitions. [2022-02-15 02:24:36,277 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 210 transitions. Word has length 204 [2022-02-15 02:24:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:36,277 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 210 transitions. [2022-02-15 02:24:36,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.1157894736842104) internal successors, (201), 94 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 210 transitions. [2022-02-15 02:24:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-02-15 02:24:36,277 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:36,278 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:36,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-15 02:24:36,278 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:36,278 INFO L85 PathProgramCache]: Analyzing trace with hash 983276764, now seen corresponding path program 87 times [2022-02-15 02:24:36,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:36,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718518002] [2022-02-15 02:24:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:36,899 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:36,932 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:36,965 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,010 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,064 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 0 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,070 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:37,070 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-02-15 02:24:37,106 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:37,106 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:37,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:40,780 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:40,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718518002] [2022-02-15 02:24:40,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [718518002] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:40,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:40,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-15 02:24:40,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140434730] [2022-02-15 02:24:40,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:40,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-15 02:24:40,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:40,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-15 02:24:40,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=8788, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 02:24:40,782 INFO L87 Difference]: Start difference. First operand 207 states and 210 transitions. Second operand has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:47,224 INFO L93 Difference]: Finished difference Result 228 states and 238 transitions. [2022-02-15 02:24:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-15 02:24:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 1 states have call successors, (2), 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 206 [2022-02-15 02:24:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:47,225 INFO L225 Difference]: With dead ends: 228 [2022-02-15 02:24:47,225 INFO L226 Difference]: Without dead ends: 217 [2022-02-15 02:24:47,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 61 SyntacticMatches, 52 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10108 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=990, Invalid=34542, Unknown=0, NotChecked=0, Total=35532 [2022-02-15 02:24:47,226 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 224 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 15416 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 15628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 15416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:47,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 227 Invalid, 15628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 15416 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-02-15 02:24:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-02-15 02:24:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 209. [2022-02-15 02:24:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.0195121951219512) internal successors, (209), 205 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) [2022-02-15 02:24:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 212 transitions. [2022-02-15 02:24:47,378 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 212 transitions. Word has length 206 [2022-02-15 02:24:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:47,378 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 212 transitions. [2022-02-15 02:24:47,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.1145833333333335) internal successors, (203), 95 states have internal predecessors, (203), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 212 transitions. [2022-02-15 02:24:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-02-15 02:24:47,379 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:47,379 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:47,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-15 02:24:47,379 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash -30012486, now seen corresponding path program 88 times [2022-02-15 02:24:47,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:47,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30452873] [2022-02-15 02:24:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:48,003 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:48,044 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:48,079 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:48,124 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:48,163 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:48,196 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:48,252 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:48,252 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:48,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:24:51,992 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:51,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30452873] [2022-02-15 02:24:51,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [30452873] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:51,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:51,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-15 02:24:51,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379469239] [2022-02-15 02:24:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:51,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-15 02:24:51,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-15 02:24:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8977, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 02:24:51,993 INFO L87 Difference]: Start difference. First operand 209 states and 212 transitions. Second operand has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:58,131 INFO L93 Difference]: Finished difference Result 230 states and 240 transitions. [2022-02-15 02:24:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-15 02:24:58,131 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 1 states have call successors, (2), 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 208 [2022-02-15 02:24:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:58,132 INFO L225 Difference]: With dead ends: 230 [2022-02-15 02:24:58,132 INFO L226 Difference]: Without dead ends: 219 [2022-02-15 02:24:58,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 61 SyntacticMatches, 53 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10274 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=999, Invalid=35291, Unknown=0, NotChecked=0, Total=36290 [2022-02-15 02:24:58,133 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 225 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 13747 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 13961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 13747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:58,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 227 Invalid, 13961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 13747 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-02-15 02:24:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-02-15 02:24:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 211. [2022-02-15 02:24:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 207 states have (on average 1.0193236714975846) internal successors, (211), 207 states have internal predecessors, (211), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 214 transitions. [2022-02-15 02:24:58,280 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 214 transitions. Word has length 208 [2022-02-15 02:24:58,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:58,280 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 214 transitions. [2022-02-15 02:24:58,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.11340206185567) internal successors, (205), 96 states have internal predecessors, (205), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 214 transitions. [2022-02-15 02:24:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-02-15 02:24:58,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:58,281 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:58,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-15 02:24:58,281 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:58,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1156594456, now seen corresponding path program 89 times [2022-02-15 02:24:58,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:58,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183493222] [2022-02-15 02:24:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:58,906 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,939 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:58,971 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:59,018 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:59,051 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:59,084 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:59,141 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:24:59,141 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:24:59,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:02,886 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:02,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183493222] [2022-02-15 02:25:02,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1183493222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:02,887 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:02,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-15 02:25:02,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131663691] [2022-02-15 02:25:02,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:02,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-15 02:25:02,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:02,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-15 02:25:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=9168, Unknown=0, NotChecked=0, Total=9506 [2022-02-15 02:25:02,889 INFO L87 Difference]: Start difference. First operand 211 states and 214 transitions. Second operand has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:09,234 INFO L93 Difference]: Finished difference Result 232 states and 242 transitions. [2022-02-15 02:25:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 02:25:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 1 states have call successors, (2), 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 [2022-02-15 02:25:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:09,235 INFO L225 Difference]: With dead ends: 232 [2022-02-15 02:25:09,235 INFO L226 Difference]: Without dead ends: 221 [2022-02-15 02:25:09,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 63 SyntacticMatches, 52 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10360 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1008, Invalid=36048, Unknown=0, NotChecked=0, Total=37056 [2022-02-15 02:25:09,237 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 219 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 14442 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 14652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 14442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:09,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 117 Invalid, 14652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 14442 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-15 02:25:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-02-15 02:25:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2022-02-15 02:25:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 209 states have (on average 1.0191387559808613) internal successors, (213), 209 states have internal predecessors, (213), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 216 transitions. [2022-02-15 02:25:09,403 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 216 transitions. Word has length 210 [2022-02-15 02:25:09,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:09,403 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 216 transitions. [2022-02-15 02:25:09,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 97 states have internal predecessors, (207), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:09,404 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 216 transitions. [2022-02-15 02:25:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-02-15 02:25:09,404 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:09,404 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:09,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-15 02:25:09,404 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:09,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:09,405 INFO L85 PathProgramCache]: Analyzing trace with hash -975435018, now seen corresponding path program 90 times [2022-02-15 02:25:09,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:09,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956088751] [2022-02-15 02:25:09,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:10,040 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:10,074 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:10,106 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:10,151 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:10,183 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:10,216 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:10,274 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:10,274 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:10,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:13,892 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:13,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956088751] [2022-02-15 02:25:13,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [956088751] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:13,893 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:13,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-15 02:25:13,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789447227] [2022-02-15 02:25:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:13,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-15 02:25:13,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:13,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-15 02:25:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=9361, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:25:13,894 INFO L87 Difference]: Start difference. First operand 213 states and 216 transitions. Second operand has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:20,725 INFO L93 Difference]: Finished difference Result 234 states and 244 transitions. [2022-02-15 02:25:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-15 02:25:20,726 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 1 states have call successors, (2), 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 212 [2022-02-15 02:25:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:20,726 INFO L225 Difference]: With dead ends: 234 [2022-02-15 02:25:20,726 INFO L226 Difference]: Without dead ends: 223 [2022-02-15 02:25:20,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 70 SyntacticMatches, 46 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10315 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1017, Invalid=36813, Unknown=0, NotChecked=0, Total=37830 [2022-02-15 02:25:20,728 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 229 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 16385 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 16603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 16385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:20,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 347 Invalid, 16603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 16385 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-02-15 02:25:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-02-15 02:25:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 215. [2022-02-15 02:25:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 211 states have (on average 1.018957345971564) internal successors, (215), 211 states have internal predecessors, (215), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 218 transitions. [2022-02-15 02:25:20,881 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 218 transitions. Word has length 212 [2022-02-15 02:25:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:20,881 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 218 transitions. [2022-02-15 02:25:20,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.111111111111111) internal successors, (209), 98 states have internal predecessors, (209), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 218 transitions. [2022-02-15 02:25:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-02-15 02:25:20,882 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:20,882 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:20,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-15 02:25:20,882 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:20,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1156359340, now seen corresponding path program 91 times [2022-02-15 02:25:20,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:20,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705619821] [2022-02-15 02:25:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:21,502 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,536 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,615 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,649 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,682 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,742 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:21,742 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:25,665 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:25,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705619821] [2022-02-15 02:25:25,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [705619821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:25,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:25,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-15 02:25:25,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946264046] [2022-02-15 02:25:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:25,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-15 02:25:25,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:25,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-15 02:25:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=9556, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 02:25:25,666 INFO L87 Difference]: Start difference. First operand 215 states and 218 transitions. Second operand has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:32,708 INFO L93 Difference]: Finished difference Result 238 states and 249 transitions. [2022-02-15 02:25:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-15 02:25:32,709 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 1 states have call successors, (2), 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 214 [2022-02-15 02:25:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:32,709 INFO L225 Difference]: With dead ends: 238 [2022-02-15 02:25:32,710 INFO L226 Difference]: Without dead ends: 227 [2022-02-15 02:25:32,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 64 SyntacticMatches, 53 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10871 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1026, Invalid=37586, Unknown=0, NotChecked=0, Total=38612 [2022-02-15 02:25:32,711 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 280 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17015 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 17286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 17015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:32,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 72 Invalid, 17286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 17015 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-02-15 02:25:32,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-02-15 02:25:32,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 219. [2022-02-15 02:25:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 215 states have (on average 1.0186046511627906) internal successors, (219), 215 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) [2022-02-15 02:25:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2022-02-15 02:25:32,876 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 214 [2022-02-15 02:25:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:32,876 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2022-02-15 02:25:32,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.11) internal successors, (211), 99 states have internal predecessors, (211), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2022-02-15 02:25:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-02-15 02:25:32,877 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:32,877 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:32,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-15 02:25:32,877 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1069026354, now seen corresponding path program 92 times [2022-02-15 02:25:32,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:32,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303774285] [2022-02-15 02:25:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:33,474 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:33,507 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:33,539 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:33,583 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:33,621 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:33,654 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:33,712 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:33,712 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:37,685 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:37,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303774285] [2022-02-15 02:25:37,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1303774285] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:37,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:37,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-15 02:25:37,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180846714] [2022-02-15 02:25:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:37,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-15 02:25:37,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-15 02:25:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=9753, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:25:37,686 INFO L87 Difference]: Start difference. First operand 219 states and 222 transitions. Second operand has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:45,145 INFO L93 Difference]: Finished difference Result 239 states and 249 transitions. [2022-02-15 02:25:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-15 02:25:45,146 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 1 states have call successors, (2), 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 216 [2022-02-15 02:25:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:45,146 INFO L225 Difference]: With dead ends: 239 [2022-02-15 02:25:45,146 INFO L226 Difference]: Without dead ends: 228 [2022-02-15 02:25:45,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 71 SyntacticMatches, 47 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11124 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1035, Invalid=38367, Unknown=0, NotChecked=0, Total=39402 [2022-02-15 02:25:45,148 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 262 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 18394 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 18653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 18394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:45,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 97 Invalid, 18653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 18394 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-02-15 02:25:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-02-15 02:25:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 221. [2022-02-15 02:25:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 217 states have (on average 1.0184331797235022) internal successors, (221), 217 states have internal predecessors, (221), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 224 transitions. [2022-02-15 02:25:45,315 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 224 transitions. Word has length 216 [2022-02-15 02:25:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:45,315 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 224 transitions. [2022-02-15 02:25:45,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.108910891089109) internal successors, (213), 100 states have internal predecessors, (213), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 224 transitions. [2022-02-15 02:25:45,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-02-15 02:25:45,316 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:45,316 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:45,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-15 02:25:45,316 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:45,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:45,316 INFO L85 PathProgramCache]: Analyzing trace with hash 51086939, now seen corresponding path program 93 times [2022-02-15 02:25:45,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:45,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702281666] [2022-02-15 02:25:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:45,933 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:45,972 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,005 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,049 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,121 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,185 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:46,186 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:46,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:50,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:50,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702281666] [2022-02-15 02:25:50,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [702281666] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:50,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:50,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-15 02:25:50,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557469437] [2022-02-15 02:25:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:50,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-15 02:25:50,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:50,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-15 02:25:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=9952, Unknown=0, NotChecked=0, Total=10302 [2022-02-15 02:25:50,112 INFO L87 Difference]: Start difference. First operand 221 states and 224 transitions. Second operand has 102 states, 102 states have (on average 2.1176470588235294) internal successors, (216), 101 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:57,306 INFO L93 Difference]: Finished difference Result 241 states and 251 transitions. [2022-02-15 02:25:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-15 02:25:57,307 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.1176470588235294) internal successors, (216), 101 states have internal predecessors, (216), 1 states have call successors, (2), 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 219 [2022-02-15 02:25:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:57,307 INFO L225 Difference]: With dead ends: 241 [2022-02-15 02:25:57,307 INFO L226 Difference]: Without dead ends: 230 [2022-02-15 02:25:57,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 74 SyntacticMatches, 46 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11110 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1044, Invalid=39156, Unknown=0, NotChecked=0, Total=40200 [2022-02-15 02:25:57,309 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 235 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 17210 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 17436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 17210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:57,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 282 Invalid, 17436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 17210 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-02-15 02:25:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-02-15 02:25:57,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 222. [2022-02-15 02:25:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.018348623853211) internal successors, (222), 218 states have internal predecessors, (222), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 225 transitions. [2022-02-15 02:25:57,471 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 225 transitions. Word has length 219 [2022-02-15 02:25:57,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:57,471 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 225 transitions. [2022-02-15 02:25:57,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.1176470588235294) internal successors, (216), 101 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:57,471 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 225 transitions. [2022-02-15 02:25:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-02-15 02:25:57,472 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:57,472 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:57,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-15 02:25:57,472 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1783730553, now seen corresponding path program 94 times [2022-02-15 02:25:57,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:57,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408224557] [2022-02-15 02:25:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:58,091 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:58,125 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:58,157 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:58,201 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:58,235 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:58,267 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:58,328 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:25:58,329 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:25:58,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:02,559 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:02,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408224557] [2022-02-15 02:26:02,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [408224557] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:02,559 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:02,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-15 02:26:02,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411319390] [2022-02-15 02:26:02,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:02,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 02:26:02,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 02:26:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=10153, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:26:02,561 INFO L87 Difference]: Start difference. First operand 222 states and 225 transitions. Second operand has 103 states, 103 states have (on average 2.116504854368932) internal successors, (218), 102 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:10,395 INFO L93 Difference]: Finished difference Result 243 states and 253 transitions. [2022-02-15 02:26:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-15 02:26:10,396 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.116504854368932) internal successors, (218), 102 states have internal predecessors, (218), 1 states have call successors, (2), 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 221 [2022-02-15 02:26:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:10,397 INFO L225 Difference]: With dead ends: 243 [2022-02-15 02:26:10,397 INFO L226 Difference]: Without dead ends: 232 [2022-02-15 02:26:10,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 66 SyntacticMatches, 55 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11743 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1053, Invalid=39953, Unknown=0, NotChecked=0, Total=41006 [2022-02-15 02:26:10,398 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 266 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 19532 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 19795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 19532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:10,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 262 Invalid, 19795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 19532 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 02:26:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-02-15 02:26:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2022-02-15 02:26:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 220 states have (on average 1.018181818181818) internal successors, (224), 220 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) [2022-02-15 02:26:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 227 transitions. [2022-02-15 02:26:10,572 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 227 transitions. Word has length 221 [2022-02-15 02:26:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:10,572 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 227 transitions. [2022-02-15 02:26:10,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.116504854368932) internal successors, (218), 102 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 227 transitions. [2022-02-15 02:26:10,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-02-15 02:26:10,573 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:10,573 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:10,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-15 02:26:10,573 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:10,573 INFO L85 PathProgramCache]: Analyzing trace with hash 406932759, now seen corresponding path program 95 times [2022-02-15 02:26:10,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:10,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899884697] [2022-02-15 02:26:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:11,201 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:11,240 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:11,272 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:11,316 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:11,356 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:11,389 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:11,448 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:11,448 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:26:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:15,667 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:15,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899884697] [2022-02-15 02:26:15,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1899884697] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:15,667 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:15,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-15 02:26:15,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558274642] [2022-02-15 02:26:15,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:15,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-15 02:26:15,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-15 02:26:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=10356, Unknown=0, NotChecked=0, Total=10712 [2022-02-15 02:26:15,669 INFO L87 Difference]: Start difference. First operand 224 states and 227 transitions. Second operand has 104 states, 104 states have (on average 2.1153846153846154) internal successors, (220), 103 states have internal predecessors, (220), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:23,108 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2022-02-15 02:26:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-15 02:26:23,109 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.1153846153846154) internal successors, (220), 103 states have internal predecessors, (220), 1 states have call successors, (2), 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 223 [2022-02-15 02:26:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:23,109 INFO L225 Difference]: With dead ends: 245 [2022-02-15 02:26:23,109 INFO L226 Difference]: Without dead ends: 234 [2022-02-15 02:26:23,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 73 SyntacticMatches, 49 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11733 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1062, Invalid=40758, Unknown=0, NotChecked=0, Total=41820 [2022-02-15 02:26:23,111 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 285 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17553 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 17830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 17553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:23,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 27 Invalid, 17830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 17553 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-02-15 02:26:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-15 02:26:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2022-02-15 02:26:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.018018018018018) internal successors, (226), 222 states have internal predecessors, (226), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 229 transitions. [2022-02-15 02:26:23,286 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 229 transitions. Word has length 223 [2022-02-15 02:26:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:23,286 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 229 transitions. [2022-02-15 02:26:23,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.1153846153846154) internal successors, (220), 103 states have internal predecessors, (220), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 229 transitions. [2022-02-15 02:26:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-02-15 02:26:23,287 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:23,287 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:23,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-15 02:26:23,287 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:23,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash 154179893, now seen corresponding path program 96 times [2022-02-15 02:26:23,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:23,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598882851] [2022-02-15 02:26:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:23,903 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,942 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:23,975 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:24,019 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:24,057 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:24,089 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:24,149 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:24,149 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:26:24,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:28,228 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:28,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598882851] [2022-02-15 02:26:28,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1598882851] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:28,228 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:28,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-02-15 02:26:28,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675254629] [2022-02-15 02:26:28,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:28,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-15 02:26:28,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-15 02:26:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=10561, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 02:26:28,229 INFO L87 Difference]: Start difference. First operand 226 states and 229 transitions. Second operand has 105 states, 105 states have (on average 2.1142857142857143) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:35,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:35,599 INFO L93 Difference]: Finished difference Result 247 states and 257 transitions. [2022-02-15 02:26:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-15 02:26:35,600 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.1142857142857143) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 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 [2022-02-15 02:26:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:35,601 INFO L225 Difference]: With dead ends: 247 [2022-02-15 02:26:35,601 INFO L226 Difference]: Without dead ends: 236 [2022-02-15 02:26:35,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 76 SyntacticMatches, 47 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11722 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1071, Invalid=41571, Unknown=0, NotChecked=0, Total=42642 [2022-02-15 02:26:35,602 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 241 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 17004 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 17236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 17004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:35,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 297 Invalid, 17236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 17004 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-02-15 02:26:35,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-02-15 02:26:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 228. [2022-02-15 02:26:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 224 states have (on average 1.0178571428571428) internal successors, (228), 224 states have internal predecessors, (228), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 231 transitions. [2022-02-15 02:26:35,789 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 231 transitions. Word has length 225 [2022-02-15 02:26:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:35,789 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 231 transitions. [2022-02-15 02:26:35,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.1142857142857143) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 231 transitions. [2022-02-15 02:26:35,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-02-15 02:26:35,790 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:35,790 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:35,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-15 02:26:35,790 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:35,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:35,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2071811539, now seen corresponding path program 97 times [2022-02-15 02:26:35,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:35,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707235269] [2022-02-15 02:26:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:36,428 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:36,462 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:36,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:36,539 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:36,573 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:36,605 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:36,665 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:36,666 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:26:36,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:36,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:40,993 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:40,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707235269] [2022-02-15 02:26:40,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1707235269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:40,993 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:40,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-02-15 02:26:40,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610843086] [2022-02-15 02:26:40,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:40,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-15 02:26:40,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:40,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-15 02:26:40,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=10768, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 02:26:40,995 INFO L87 Difference]: Start difference. First operand 228 states and 231 transitions. Second operand has 106 states, 106 states have (on average 2.1132075471698113) internal successors, (224), 105 states have internal predecessors, (224), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:48,906 INFO L93 Difference]: Finished difference Result 249 states and 259 transitions. [2022-02-15 02:26:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-15 02:26:48,907 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.1132075471698113) internal successors, (224), 105 states have internal predecessors, (224), 1 states have call successors, (2), 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 227 [2022-02-15 02:26:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:48,907 INFO L225 Difference]: With dead ends: 249 [2022-02-15 02:26:48,907 INFO L226 Difference]: Without dead ends: 238 [2022-02-15 02:26:48,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 72 SyntacticMatches, 52 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11902 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1080, Invalid=42392, Unknown=0, NotChecked=0, Total=43472 [2022-02-15 02:26:48,909 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 289 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 18755 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 19036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 18755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:48,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 112 Invalid, 19036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 18755 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-15 02:26:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-02-15 02:26:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 230. [2022-02-15 02:26:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 226 states have (on average 1.0176991150442478) internal successors, (230), 226 states have internal predecessors, (230), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 233 transitions. [2022-02-15 02:26:49,090 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 233 transitions. Word has length 227 [2022-02-15 02:26:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:49,090 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 233 transitions. [2022-02-15 02:26:49,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.1132075471698113) internal successors, (224), 105 states have internal predecessors, (224), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 233 transitions. [2022-02-15 02:26:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-02-15 02:26:49,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:49,091 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:49,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-15 02:26:49,091 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:49,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1920113935, now seen corresponding path program 98 times [2022-02-15 02:26:49,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:49,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4992206] [2022-02-15 02:26:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:49,726 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,765 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,797 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,848 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,886 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,919 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,980 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:26:49,980 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:26:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:49,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:26:54,450 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:54,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4992206] [2022-02-15 02:26:54,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [4992206] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:54,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:54,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-02-15 02:26:54,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554922278] [2022-02-15 02:26:54,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:54,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-15 02:26:54,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-15 02:26:54,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=10977, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 02:26:54,452 INFO L87 Difference]: Start difference. First operand 230 states and 233 transitions. Second operand has 107 states, 107 states have (on average 2.1121495327102804) internal successors, (226), 106 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:02,289 INFO L93 Difference]: Finished difference Result 253 states and 264 transitions. [2022-02-15 02:27:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-15 02:27:02,290 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.1121495327102804) internal successors, (226), 106 states have internal predecessors, (226), 1 states have call successors, (2), 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 229 [2022-02-15 02:27:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:02,290 INFO L225 Difference]: With dead ends: 253 [2022-02-15 02:27:02,290 INFO L226 Difference]: Without dead ends: 242 [2022-02-15 02:27:02,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 71 SyntacticMatches, 54 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12372 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1089, Invalid=43221, Unknown=0, NotChecked=0, Total=44310 [2022-02-15 02:27:02,292 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 248 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 18536 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 18775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 18536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:02,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 247 Invalid, 18775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 18536 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-02-15 02:27:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-02-15 02:27:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 234. [2022-02-15 02:27:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 1.017391304347826) internal successors, (234), 230 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 237 transitions. [2022-02-15 02:27:02,477 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 237 transitions. Word has length 229 [2022-02-15 02:27:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:02,477 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 237 transitions. [2022-02-15 02:27:02,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.1121495327102804) internal successors, (226), 106 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 237 transitions. [2022-02-15 02:27:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-02-15 02:27:02,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:02,478 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 14, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:27:02,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-15 02:27:02,478 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1540268175, now seen corresponding path program 99 times [2022-02-15 02:27:02,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:02,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150804834] [2022-02-15 02:27:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:03,089 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:03,128 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:03,160 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:03,207 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:03,246 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:03,278 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:03,346 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:03,346 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:03,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:03,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:07,814 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:07,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150804834] [2022-02-15 02:27:07,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1150804834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:07,815 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:07,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-02-15 02:27:07,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929837036] [2022-02-15 02:27:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:07,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-02-15 02:27:07,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-02-15 02:27:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=11188, Unknown=0, NotChecked=0, Total=11556 [2022-02-15 02:27:07,816 INFO L87 Difference]: Start difference. First operand 234 states and 237 transitions. Second operand has 108 states, 108 states have (on average 2.111111111111111) internal successors, (228), 107 states have internal predecessors, (228), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:16,274 INFO L93 Difference]: Finished difference Result 254 states and 264 transitions. [2022-02-15 02:27:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-15 02:27:16,275 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.111111111111111) internal successors, (228), 107 states have internal predecessors, (228), 1 states have call successors, (2), 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 231 [2022-02-15 02:27:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:16,275 INFO L225 Difference]: With dead ends: 254 [2022-02-15 02:27:16,275 INFO L226 Difference]: Without dead ends: 243 [2022-02-15 02:27:16,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 74 SyntacticMatches, 52 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12461 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1098, Invalid=44058, Unknown=0, NotChecked=0, Total=45156 [2022-02-15 02:27:16,277 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 284 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 21013 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 21294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 21013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:16,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 37 Invalid, 21294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 21013 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-02-15 02:27:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-02-15 02:27:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 236. [2022-02-15 02:27:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 1.0172413793103448) internal successors, (236), 232 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:16,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 239 transitions. [2022-02-15 02:27:16,463 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 239 transitions. Word has length 231 [2022-02-15 02:27:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:16,463 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 239 transitions. [2022-02-15 02:27:16,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.111111111111111) internal successors, (228), 107 states have internal predecessors, (228), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 239 transitions. [2022-02-15 02:27:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-02-15 02:27:16,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:16,464 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:27:16,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-15 02:27:16,464 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1431914274, now seen corresponding path program 100 times [2022-02-15 02:27:16,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:16,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831663322] [2022-02-15 02:27:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:17,086 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:17,118 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:17,150 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:17,196 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:17,229 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:17,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:17,323 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:17,323 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:21,975 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:21,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831663322] [2022-02-15 02:27:21,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1831663322] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:21,975 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:21,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-02-15 02:27:21,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891934939] [2022-02-15 02:27:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:21,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-02-15 02:27:21,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-02-15 02:27:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=11401, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 02:27:21,977 INFO L87 Difference]: Start difference. First operand 236 states and 239 transitions. Second operand has 109 states, 109 states have (on average 2.1192660550458715) internal successors, (231), 108 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:30,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:30,603 INFO L93 Difference]: Finished difference Result 256 states and 266 transitions. [2022-02-15 02:27:30,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-15 02:27:30,603 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.1192660550458715) internal successors, (231), 108 states have internal predecessors, (231), 1 states have call successors, (2), 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 234 [2022-02-15 02:27:30,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:30,604 INFO L225 Difference]: With dead ends: 256 [2022-02-15 02:27:30,604 INFO L226 Difference]: Without dead ends: 245 [2022-02-15 02:27:30,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 77 SyntacticMatches, 51 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12815 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1107, Invalid=44903, Unknown=0, NotChecked=0, Total=46010 [2022-02-15 02:27:30,606 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 279 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 21568 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 21845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 21568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:30,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 257 Invalid, 21845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 21568 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-02-15 02:27:30,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-02-15 02:27:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 237. [2022-02-15 02:27:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 233 states have (on average 1.0171673819742488) internal successors, (237), 233 states have internal predecessors, (237), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 240 transitions. [2022-02-15 02:27:30,796 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 240 transitions. Word has length 234 [2022-02-15 02:27:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:30,796 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 240 transitions. [2022-02-15 02:27:30,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.1192660550458715) internal successors, (231), 108 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 240 transitions. [2022-02-15 02:27:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-02-15 02:27:30,797 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:30,797 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:27:30,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-02-15 02:27:30,797 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1746260164, now seen corresponding path program 101 times [2022-02-15 02:27:30,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:30,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117494667] [2022-02-15 02:27:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:31,436 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:31,475 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:31,507 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:31,552 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:31,590 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:31,623 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:31,691 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:31,691 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:36,350 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:36,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117494667] [2022-02-15 02:27:36,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [117494667] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:36,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:36,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-02-15 02:27:36,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865261342] [2022-02-15 02:27:36,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:36,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-02-15 02:27:36,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:36,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-02-15 02:27:36,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=11616, Unknown=0, NotChecked=0, Total=11990 [2022-02-15 02:27:36,351 INFO L87 Difference]: Start difference. First operand 237 states and 240 transitions. Second operand has 110 states, 110 states have (on average 2.118181818181818) internal successors, (233), 109 states have internal predecessors, (233), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:44,475 INFO L93 Difference]: Finished difference Result 258 states and 268 transitions. [2022-02-15 02:27:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-15 02:27:44,475 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.118181818181818) internal successors, (233), 109 states have internal predecessors, (233), 1 states have call successors, (2), 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 236 [2022-02-15 02:27:44,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:44,476 INFO L225 Difference]: With dead ends: 258 [2022-02-15 02:27:44,476 INFO L226 Difference]: Without dead ends: 247 [2022-02-15 02:27:44,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 75 SyntacticMatches, 54 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12955 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1116, Invalid=45756, Unknown=0, NotChecked=0, Total=46872 [2022-02-15 02:27:44,477 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 297 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19277 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 19277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:44,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 52 Invalid, 19568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 19277 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-15 02:27:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-02-15 02:27:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 239. [2022-02-15 02:27:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.0170212765957447) internal successors, (239), 235 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) [2022-02-15 02:27:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 242 transitions. [2022-02-15 02:27:44,669 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 242 transitions. Word has length 236 [2022-02-15 02:27:44,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:44,669 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 242 transitions. [2022-02-15 02:27:44,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.118181818181818) internal successors, (233), 109 states have internal predecessors, (233), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 242 transitions. [2022-02-15 02:27:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-02-15 02:27:44,670 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:44,670 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:27:44,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-02-15 02:27:44,670 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:44,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:44,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1110017562, now seen corresponding path program 102 times [2022-02-15 02:27:44,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:44,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692280379] [2022-02-15 02:27:44,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:45,283 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:45,321 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:45,354 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:45,397 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:45,437 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:45,470 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:45,538 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:27:45,538 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:27:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:45,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:50,342 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:50,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692280379] [2022-02-15 02:27:50,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [692280379] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:50,342 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:50,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-02-15 02:27:50,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955686085] [2022-02-15 02:27:50,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:50,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-02-15 02:27:50,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-02-15 02:27:50,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=11833, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 02:27:50,344 INFO L87 Difference]: Start difference. First operand 239 states and 242 transitions. Second operand has 111 states, 111 states have (on average 2.1171171171171173) internal successors, (235), 110 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:59,346 INFO L93 Difference]: Finished difference Result 260 states and 270 transitions. [2022-02-15 02:27:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-15 02:27:59,346 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.1171171171171173) internal successors, (235), 110 states have internal predecessors, (235), 1 states have call successors, (2), 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 238 [2022-02-15 02:27:59,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:59,347 INFO L225 Difference]: With dead ends: 260 [2022-02-15 02:27:59,347 INFO L226 Difference]: Without dead ends: 249 [2022-02-15 02:27:59,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 72 SyntacticMatches, 58 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13082 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1125, Invalid=46617, Unknown=0, NotChecked=0, Total=47742 [2022-02-15 02:27:59,349 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 283 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 22602 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 22883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 22602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:59,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 377 Invalid, 22883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 22602 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-02-15 02:27:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-15 02:27:59,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 241. [2022-02-15 02:27:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 237 states have (on average 1.0168776371308017) internal successors, (241), 237 states have internal predecessors, (241), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 244 transitions. [2022-02-15 02:27:59,544 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 244 transitions. Word has length 238 [2022-02-15 02:27:59,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:59,544 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 244 transitions. [2022-02-15 02:27:59,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.1171171171171173) internal successors, (235), 110 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 244 transitions. [2022-02-15 02:27:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-02-15 02:27:59,544 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:59,545 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:27:59,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-02-15 02:27:59,545 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1508810104, now seen corresponding path program 103 times [2022-02-15 02:27:59,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:59,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407744773] [2022-02-15 02:27:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:28:00,175 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:00,215 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:00,247 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:00,291 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:00,330 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:00,363 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:00,425 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:00,425 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:28:00,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:28:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:28:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:05,285 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:05,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407744773] [2022-02-15 02:28:05,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [407744773] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:05,285 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:05,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-02-15 02:28:05,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706615767] [2022-02-15 02:28:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:05,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-02-15 02:28:05,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-02-15 02:28:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=12052, Unknown=0, NotChecked=0, Total=12432 [2022-02-15 02:28:05,286 INFO L87 Difference]: Start difference. First operand 241 states and 244 transitions. Second operand has 112 states, 112 states have (on average 2.1160714285714284) internal successors, (237), 111 states have internal predecessors, (237), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:28:14,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:28:14,328 INFO L93 Difference]: Finished difference Result 262 states and 272 transitions. [2022-02-15 02:28:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-15 02:28:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.1160714285714284) internal successors, (237), 111 states have internal predecessors, (237), 1 states have call successors, (2), 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 [2022-02-15 02:28:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:28:14,329 INFO L225 Difference]: With dead ends: 262 [2022-02-15 02:28:14,329 INFO L226 Difference]: Without dead ends: 251 [2022-02-15 02:28:14,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 73 SyntacticMatches, 58 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13358 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1134, Invalid=47486, Unknown=0, NotChecked=0, Total=48620 [2022-02-15 02:28:14,331 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 256 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 22312 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 22560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 22312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:28:14,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 357 Invalid, 22560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 22312 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-02-15 02:28:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-02-15 02:28:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 243. [2022-02-15 02:28:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 239 states have (on average 1.0167364016736402) internal successors, (243), 239 states have internal predecessors, (243), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:28:14,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 246 transitions. [2022-02-15 02:28:14,530 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 246 transitions. Word has length 240 [2022-02-15 02:28:14,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:28:14,530 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 246 transitions. [2022-02-15 02:28:14,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.1160714285714284) internal successors, (237), 111 states have internal predecessors, (237), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:28:14,531 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 246 transitions. [2022-02-15 02:28:14,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-02-15 02:28:14,531 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:28:14,531 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:28:14,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-02-15 02:28:14,531 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:28:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:28:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1798613674, now seen corresponding path program 104 times [2022-02-15 02:28:14,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:28:14,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015654918] [2022-02-15 02:28:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:28:15,156 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:15,189 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:15,221 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:15,268 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:15,315 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:15,356 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:15,421 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:15,422 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:28:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:28:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:15,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:28:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:20,359 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:20,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015654918] [2022-02-15 02:28:20,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1015654918] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:20,359 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:20,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-02-15 02:28:20,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736141119] [2022-02-15 02:28:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:20,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-02-15 02:28:20,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-02-15 02:28:20,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=12273, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 02:28:20,361 INFO L87 Difference]: Start difference. First operand 243 states and 246 transitions. Second operand has 113 states, 113 states have (on average 2.1150442477876106) internal successors, (239), 112 states have internal predecessors, (239), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:28:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:28:29,596 INFO L93 Difference]: Finished difference Result 264 states and 274 transitions. [2022-02-15 02:28:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 02:28:29,596 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.1150442477876106) internal successors, (239), 112 states have internal predecessors, (239), 1 states have call successors, (2), 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 242 [2022-02-15 02:28:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:28:29,597 INFO L225 Difference]: With dead ends: 264 [2022-02-15 02:28:29,597 INFO L226 Difference]: Without dead ends: 253 [2022-02-15 02:28:29,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 76 SyntacticMatches, 56 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13651 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1143, Invalid=48363, Unknown=0, NotChecked=0, Total=49506 [2022-02-15 02:28:29,599 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 295 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 22962 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 23253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 22962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-15 02:28:29,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 87 Invalid, 23253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 22962 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-02-15 02:28:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-02-15 02:28:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 245. [2022-02-15 02:28:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 241 states have (on average 1.016597510373444) internal successors, (245), 241 states have internal predecessors, (245), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:28:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 248 transitions. [2022-02-15 02:28:29,800 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 248 transitions. Word has length 242 [2022-02-15 02:28:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:28:29,800 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 248 transitions. [2022-02-15 02:28:29,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.1150442477876106) internal successors, (239), 112 states have internal predecessors, (239), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:28:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 248 transitions. [2022-02-15 02:28:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-02-15 02:28:29,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:28:29,801 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:28:29,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-02-15 02:28:29,801 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:28:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:28:29,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1957065292, now seen corresponding path program 105 times [2022-02-15 02:28:29,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:28:29,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094567462] [2022-02-15 02:28:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:28:30,429 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:30,468 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:30,500 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:30,545 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:30,585 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:30,618 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:30,689 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:30,690 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:28:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:28:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:28:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:35,474 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:35,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094567462] [2022-02-15 02:28:35,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1094567462] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:35,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:35,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-02-15 02:28:35,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182783178] [2022-02-15 02:28:35,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:35,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-02-15 02:28:35,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:35,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-02-15 02:28:35,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=12496, Unknown=0, NotChecked=0, Total=12882 [2022-02-15 02:28:35,476 INFO L87 Difference]: Start difference. First operand 245 states and 248 transitions. Second operand has 114 states, 114 states have (on average 2.1140350877192984) internal successors, (241), 113 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:28:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:28:44,095 INFO L93 Difference]: Finished difference Result 268 states and 279 transitions. [2022-02-15 02:28:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-15 02:28:44,096 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.1140350877192984) internal successors, (241), 113 states have internal predecessors, (241), 1 states have call successors, (2), 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 244 [2022-02-15 02:28:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:28:44,096 INFO L225 Difference]: With dead ends: 268 [2022-02-15 02:28:44,096 INFO L226 Difference]: Without dead ends: 257 [2022-02-15 02:28:44,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 84 SyntacticMatches, 49 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13644 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1152, Invalid=49248, Unknown=0, NotChecked=0, Total=50400 [2022-02-15 02:28:44,098 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 261 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 19862 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 20117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 19862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-15 02:28:44,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 292 Invalid, 20117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 19862 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-15 02:28:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-02-15 02:28:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2022-02-15 02:28:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 245 states have (on average 1.0163265306122449) internal successors, (249), 245 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) [2022-02-15 02:28:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 252 transitions. [2022-02-15 02:28:44,306 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 252 transitions. Word has length 244 [2022-02-15 02:28:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:28:44,306 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 252 transitions. [2022-02-15 02:28:44,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.1140350877192984) internal successors, (241), 113 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:28:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 252 transitions. [2022-02-15 02:28:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-02-15 02:28:44,307 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:28:44,307 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 15, 15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:28:44,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-02-15 02:28:44,307 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:28:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:28:44,307 INFO L85 PathProgramCache]: Analyzing trace with hash 389752466, now seen corresponding path program 106 times [2022-02-15 02:28:44,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:28:44,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031817568] [2022-02-15 02:28:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:28:44,926 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:44,966 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:44,999 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:45,044 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:45,085 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:45,118 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:45,183 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:28:45,183 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:28:45,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:28:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:45,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:28:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:28:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:28:50,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:28:50,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031817568] [2022-02-15 02:28:50,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2031817568] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:28:50,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:28:50,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-02-15 02:28:50,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453041532] [2022-02-15 02:28:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:28:50,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-02-15 02:28:50,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:28:50,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-02-15 02:28:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=12721, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 02:28:50,463 INFO L87 Difference]: Start difference. First operand 249 states and 252 transitions. Second operand has 115 states, 115 states have (on average 2.1130434782608694) internal successors, (243), 114 states have internal predecessors, (243), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:29:00,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:29:00,328 INFO L93 Difference]: Finished difference Result 269 states and 279 transitions. [2022-02-15 02:29:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-15 02:29:00,328 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.1130434782608694) internal successors, (243), 114 states have internal predecessors, (243), 1 states have call successors, (2), 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 246 [2022-02-15 02:29:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:29:00,329 INFO L225 Difference]: With dead ends: 269 [2022-02-15 02:29:00,329 INFO L226 Difference]: Without dead ends: 258 [2022-02-15 02:29:00,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 80 SyntacticMatches, 54 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14002 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1161, Invalid=50141, Unknown=0, NotChecked=0, Total=51302 [2022-02-15 02:29:00,331 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 253 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 24477 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 24727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 24477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-02-15 02:29:00,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 497 Invalid, 24727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 24477 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-02-15 02:29:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-02-15 02:29:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 251. [2022-02-15 02:29:00,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 247 states have (on average 1.0161943319838056) internal successors, (251), 247 states have internal predecessors, (251), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:29:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 254 transitions. [2022-02-15 02:29:00,550 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 254 transitions. Word has length 246 [2022-02-15 02:29:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:29:00,550 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 254 transitions. [2022-02-15 02:29:00,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.1130434782608694) internal successors, (243), 114 states have internal predecessors, (243), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:29:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 254 transitions. [2022-02-15 02:29:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-02-15 02:29:00,551 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:29:00,551 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:29:00,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-02-15 02:29:00,551 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:29:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:29:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1688588283, now seen corresponding path program 107 times [2022-02-15 02:29:00,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:29:00,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857463503] [2022-02-15 02:29:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:29:01,197 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:01,234 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:01,275 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:01,326 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:01,363 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:01,397 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:01,462 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:01,462 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:29:01,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:29:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:01,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:29:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:29:06,742 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:29:06,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857463503] [2022-02-15 02:29:06,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [857463503] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:29:06,743 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:29:06,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-02-15 02:29:06,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26861928] [2022-02-15 02:29:06,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:29:06,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-02-15 02:29:06,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:29:06,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-02-15 02:29:06,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=12948, Unknown=0, NotChecked=0, Total=13340 [2022-02-15 02:29:06,744 INFO L87 Difference]: Start difference. First operand 251 states and 254 transitions. Second operand has 116 states, 116 states have (on average 2.1206896551724137) internal successors, (246), 115 states have internal predecessors, (246), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:29:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:29:16,068 INFO L93 Difference]: Finished difference Result 271 states and 281 transitions. [2022-02-15 02:29:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-15 02:29:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.1206896551724137) internal successors, (246), 115 states have internal predecessors, (246), 1 states have call successors, (2), 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 249 [2022-02-15 02:29:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:29:16,070 INFO L225 Difference]: With dead ends: 271 [2022-02-15 02:29:16,070 INFO L226 Difference]: Without dead ends: 260 [2022-02-15 02:29:16,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 76 SyntacticMatches, 60 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14155 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1170, Invalid=51042, Unknown=0, NotChecked=0, Total=52212 [2022-02-15 02:29:16,072 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 309 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 21713 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 22018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 21713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:29:16,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 112 Invalid, 22018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 21713 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-02-15 02:29:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-02-15 02:29:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 252. [2022-02-15 02:29:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 248 states have (on average 1.0161290322580645) internal successors, (252), 248 states have internal predecessors, (252), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:29:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 255 transitions. [2022-02-15 02:29:16,284 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 255 transitions. Word has length 249 [2022-02-15 02:29:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:29:16,284 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 255 transitions. [2022-02-15 02:29:16,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.1206896551724137) internal successors, (246), 115 states have internal predecessors, (246), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:29:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 255 transitions. [2022-02-15 02:29:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-02-15 02:29:16,285 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:29:16,285 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:29:16,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-02-15 02:29:16,285 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:29:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:29:16,286 INFO L85 PathProgramCache]: Analyzing trace with hash -830475495, now seen corresponding path program 108 times [2022-02-15 02:29:16,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:29:16,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109900677] [2022-02-15 02:29:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:29:16,892 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:16,926 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:16,960 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:17,005 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:17,054 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:17,095 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:17,184 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:17,185 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:29:17,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:29:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:17,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:29:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:29:22,680 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:29:22,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109900677] [2022-02-15 02:29:22,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2109900677] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:29:22,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:29:22,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-02-15 02:29:22,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474771180] [2022-02-15 02:29:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:29:22,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-02-15 02:29:22,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:29:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-02-15 02:29:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=13177, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 02:29:22,682 INFO L87 Difference]: Start difference. First operand 252 states and 255 transitions. Second operand has 117 states, 117 states have (on average 2.1196581196581197) internal successors, (248), 116 states have internal predecessors, (248), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:29:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:29:32,799 INFO L93 Difference]: Finished difference Result 273 states and 283 transitions. [2022-02-15 02:29:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-15 02:29:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.1196581196581197) internal successors, (248), 116 states have internal predecessors, (248), 1 states have call successors, (2), 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 251 [2022-02-15 02:29:32,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:29:32,800 INFO L225 Difference]: With dead ends: 273 [2022-02-15 02:29:32,800 INFO L226 Difference]: Without dead ends: 262 [2022-02-15 02:29:32,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 81 SyntacticMatches, 56 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14570 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1179, Invalid=51951, Unknown=0, NotChecked=0, Total=53130 [2022-02-15 02:29:32,802 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 257 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 25071 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 25325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 25071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-02-15 02:29:32,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 442 Invalid, 25325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 25071 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-02-15 02:29:32,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-02-15 02:29:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 254. [2022-02-15 02:29:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.016) internal successors, (254), 250 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) [2022-02-15 02:29:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 257 transitions. [2022-02-15 02:29:33,021 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 257 transitions. Word has length 251 [2022-02-15 02:29:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:29:33,021 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 257 transitions. [2022-02-15 02:29:33,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.1196581196581197) internal successors, (248), 116 states have internal predecessors, (248), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:29:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 257 transitions. [2022-02-15 02:29:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-02-15 02:29:33,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:29:33,022 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 16, 16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:29:33,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-02-15 02:29:33,022 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:29:33,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:29:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash 710788791, now seen corresponding path program 109 times [2022-02-15 02:29:33,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:29:33,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382736234] [2022-02-15 02:29:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:29:33,687 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:33,727 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:33,763 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:33,807 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:33,847 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:33,879 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=2}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:33,984 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 4 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=3}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 02:29:33,984 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 02:29:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:29:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:33,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:29:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:29:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:29:39,478 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:29:39,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382736234] [2022-02-15 02:29:39,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1382736234] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:29:39,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:29:39,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-02-15 02:29:39,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219610657] [2022-02-15 02:29:39,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:29:39,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-02-15 02:29:39,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:29:39,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-02-15 02:29:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=13408, Unknown=0, NotChecked=0, Total=13806 [2022-02-15 02:29:39,480 INFO L87 Difference]: Start difference. First operand 254 states and 257 transitions. Second operand has 118 states, 118 states have (on average 2.1186440677966103) internal successors, (250), 117 states have internal predecessors, (250), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)