/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-invariants/linear-inequality-inv-a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 02:16:14,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 02:16:14,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 02:16:14,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 02:16:14,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 02:16:14,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 02:16:14,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 02:16:14,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 02:16:14,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 02:16:14,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 02:16:14,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 02:16:14,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 02:16:14,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 02:16:14,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 02:16:14,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 02:16:14,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 02:16:14,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 02:16:14,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 02:16:14,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 02:16:14,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 02:16:14,499 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 02:16:14,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 02:16:14,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 02:16:14,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 02:16:14,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 02:16:14,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 02:16:14,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 02:16:14,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 02:16:14,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 02:16:14,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 02:16:14,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 02:16:14,521 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 02:16:14,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 02:16:14,522 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 02:16:14,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 02:16:14,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 02:16:14,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 02:16:14,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 02:16:14,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 02:16:14,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:16:14,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 02:16:14,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 02:16:14,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 02:16:14,524 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 02:16:14,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 02:16:14,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 02:16:14,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 02:16:14,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 02:16:14,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 02:16:14,789 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 02:16:14,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/linear-inequality-inv-a.c [2022-02-15 02:16:14,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46bb4ff3/a7c9568cfdad4115aeb95a968dcf4104/FLAG799466134 [2022-02-15 02:16:15,194 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 02:16:15,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/linear-inequality-inv-a.c [2022-02-15 02:16:15,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46bb4ff3/a7c9568cfdad4115aeb95a968dcf4104/FLAG799466134 [2022-02-15 02:16:15,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46bb4ff3/a7c9568cfdad4115aeb95a968dcf4104 [2022-02-15 02:16:15,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 02:16:15,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 02:16:15,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 02:16:15,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 02:16:15,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 02:16:15,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25187b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15, skipping insertion in model container [2022-02-15 02:16:15,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 02:16:15,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 02:16:15,750 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-invariants/linear-inequality-inv-a.c[557,570] [2022-02-15 02:16:15,753 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-invariants/linear-inequality-inv-a.c[613,626] [2022-02-15 02:16:15,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:16:15,760 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 02:16:15,789 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-invariants/linear-inequality-inv-a.c[557,570] [2022-02-15 02:16:15,789 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-invariants/linear-inequality-inv-a.c[613,626] [2022-02-15 02:16:15,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:16:15,823 INFO L208 MainTranslator]: Completed translation [2022-02-15 02:16:15,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15 WrapperNode [2022-02-15 02:16:15,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 02:16:15,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 02:16:15,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 02:16:15,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 02:16:15,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 02:16:15,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 02:16:15,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 02:16:15,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 02:16:15,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (1/1) ... [2022-02-15 02:16:15,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:16:15,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 02:16:15,891 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 02:16:15,894 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 02:16:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 02:16:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 02:16:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 02:16:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 02:16:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 02:16:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 02:16:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 02:16:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-02-15 02:16:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 02:16:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 02:16:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 02:16:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 02:16:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 02:16:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 02:16:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 02:16:15,977 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 02:16:15,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 02:16:16,058 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 02:16:16,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 02:16:16,063 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 02:16:16,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:16:16 BoogieIcfgContainer [2022-02-15 02:16:16,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 02:16:16,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 02:16:16,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 02:16:16,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 02:16:16,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:16:15" (1/3) ... [2022-02-15 02:16:16,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52915e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:16:16, skipping insertion in model container [2022-02-15 02:16:16,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:15" (2/3) ... [2022-02-15 02:16:16,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52915e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:16:16, skipping insertion in model container [2022-02-15 02:16:16,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:16:16" (3/3) ... [2022-02-15 02:16:16,078 INFO L111 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-a.c [2022-02-15 02:16:16,096 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 02:16:16,097 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-15 02:16:16,144 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 02:16:16,151 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 02:16:16,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-15 02:16:16,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 02:16:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-15 02:16:16,182 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:16,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:16,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1624254505, now seen corresponding path program 1 times [2022-02-15 02:16:16,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:16,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504139098] [2022-02-15 02:16:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:16,239 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:16,448 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 02:16:16,449 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:16,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504139098] [2022-02-15 02:16:16,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1504139098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:16,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:16,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 02:16:16,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33931674] [2022-02-15 02:16:16,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:16,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 02:16:16,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:16,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 02:16:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 02:16:16,488 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:16,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:16,561 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-02-15 02:16:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 02:16:16,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-02-15 02:16:16,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:16,574 INFO L225 Difference]: With dead ends: 29 [2022-02-15 02:16:16,575 INFO L226 Difference]: Without dead ends: 15 [2022-02-15 02:16:16,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:16:16,582 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:16,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 27 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-15 02:16:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-15 02:16:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-02-15 02:16:16,622 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2022-02-15 02:16:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:16,623 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-02-15 02:16:16,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-02-15 02:16:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 02:16:16,624 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:16,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:16,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 02:16:16,625 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:16,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1187666007, now seen corresponding path program 1 times [2022-02-15 02:16:16,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:16,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321604571] [2022-02-15 02:16:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:16,649 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:16,649 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:16,654 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:16,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:16,791 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 02:16:16,792 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:16,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321604571] [2022-02-15 02:16:16,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [321604571] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:16,792 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:16,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 02:16:16,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911923912] [2022-02-15 02:16:16,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:16,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 02:16:16,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 02:16:16,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:16:16,795 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:16,882 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-02-15 02:16:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 02:16:16,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 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 11 [2022-02-15 02:16:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:16,884 INFO L225 Difference]: With dead ends: 22 [2022-02-15 02:16:16,884 INFO L226 Difference]: Without dead ends: 20 [2022-02-15 02:16:16,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-15 02:16:16,885 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:16,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-15 02:16:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-02-15 02:16:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 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 02:16:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-02-15 02:16:16,895 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2022-02-15 02:16:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:16,895 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-02-15 02:16:16,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-02-15 02:16:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-15 02:16:16,896 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:16,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:16,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 02:16:16,897 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1837062518, now seen corresponding path program 1 times [2022-02-15 02:16:16,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:16,898 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722461547] [2022-02-15 02:16:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:16,902 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:16,902 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:16,904 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:16,987 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:16,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722461547] [2022-02-15 02:16:16,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1722461547] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:16,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:16,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 02:16:16,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185081515] [2022-02-15 02:16:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:16,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 02:16:16,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 02:16:16,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 02:16:16,989 INFO L87 Difference]: Start difference. First operand 17 states and 18 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 02:16:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:17,052 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-02-15 02:16:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 02:16:17,053 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 02:16:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:17,053 INFO L225 Difference]: With dead ends: 20 [2022-02-15 02:16:17,054 INFO L226 Difference]: Without dead ends: 16 [2022-02-15 02:16:17,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 02:16:17,055 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:17,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-02-15 02:16:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-02-15 02:16:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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 02:16:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-02-15 02:16:17,061 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2022-02-15 02:16:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:17,062 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-02-15 02:16:17,062 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 02:16:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-02-15 02:16:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-15 02:16:17,063 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:17,063 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:17,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 02:16:17,063 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:17,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:17,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1837111337, now seen corresponding path program 2 times [2022-02-15 02:16:17,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:17,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727590304] [2022-02-15 02:16:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:17,066 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:17,066 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:17,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:17,068 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,170 INFO 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 02:16:17,170 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:17,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727590304] [2022-02-15 02:16:17,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [727590304] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:17,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:17,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 02:16:17,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313965099] [2022-02-15 02:16:17,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:17,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 02:16:17,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 02:16:17,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-15 02:16:17,173 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 02:16:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:17,285 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-02-15 02:16:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 02:16:17,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 02:16:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:17,287 INFO L225 Difference]: With dead ends: 23 [2022-02-15 02:16:17,287 INFO L226 Difference]: Without dead ends: 21 [2022-02-15 02:16:17,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-15 02:16:17,298 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:17,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-15 02:16:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-02-15 02:16:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 02:16:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-02-15 02:16:17,308 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2022-02-15 02:16:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:17,308 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-02-15 02:16:17,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 02:16:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-02-15 02:16:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-15 02:16:17,309 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:17,309 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:17,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 02:16:17,310 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1115879670, now seen corresponding path program 2 times [2022-02-15 02:16:17,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:17,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62335552] [2022-02-15 02:16:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:17,316 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:17,316 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:17,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:17,320 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:17,412 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:17,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62335552] [2022-02-15 02:16:17,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [62335552] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:17,413 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:17,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 02:16:17,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716395607] [2022-02-15 02:16:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:17,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 02:16:17,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 02:16:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 02:16:17,414 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:17,471 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-02-15 02:16:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 02:16:17,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 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 13 [2022-02-15 02:16:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:17,472 INFO L225 Difference]: With dead ends: 21 [2022-02-15 02:16:17,472 INFO L226 Difference]: Without dead ends: 17 [2022-02-15 02:16:17,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-15 02:16:17,473 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:17,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-15 02:16:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-15 02:16:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-02-15 02:16:17,488 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2022-02-15 02:16:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:17,488 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-02-15 02:16:17,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-02-15 02:16:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-15 02:16:17,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:17,489 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:17,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 02:16:17,489 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:17,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1115928489, now seen corresponding path program 3 times [2022-02-15 02:16:17,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:17,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230279900] [2022-02-15 02:16:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:17,491 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:17,492 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:17,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:17,493 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,579 INFO 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 02:16:17,580 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:17,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230279900] [2022-02-15 02:16:17,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [230279900] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:17,580 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:17,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 02:16:17,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598128514] [2022-02-15 02:16:17,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:17,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 02:16:17,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 02:16:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 02:16:17,581 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:17,681 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-02-15 02:16:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 02:16:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 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 13 [2022-02-15 02:16:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:17,682 INFO L225 Difference]: With dead ends: 24 [2022-02-15 02:16:17,682 INFO L226 Difference]: Without dead ends: 22 [2022-02-15 02:16:17,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-15 02:16:17,683 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:17,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-15 02:16:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-02-15 02:16:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 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 02:16:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-02-15 02:16:17,688 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2022-02-15 02:16:17,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:17,689 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-02-15 02:16:17,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-02-15 02:16:17,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-15 02:16:17,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:17,689 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:17,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 02:16:17,690 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:17,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:17,690 INFO L85 PathProgramCache]: Analyzing trace with hash 234047862, now seen corresponding path program 3 times [2022-02-15 02:16:17,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:17,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495984094] [2022-02-15 02:16:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:17,692 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:17,692 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:17,693 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:17,771 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:17,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495984094] [2022-02-15 02:16:17,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [495984094] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:17,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:17,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 02:16:17,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942334233] [2022-02-15 02:16:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:17,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 02:16:17,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 02:16:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-15 02:16:17,773 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:17,831 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-02-15 02:16:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 02:16:17,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 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 14 [2022-02-15 02:16:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:17,832 INFO L225 Difference]: With dead ends: 22 [2022-02-15 02:16:17,832 INFO L226 Difference]: Without dead ends: 18 [2022-02-15 02:16:17,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-02-15 02:16:17,833 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:17,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-15 02:16:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-15 02:16:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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 02:16:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-02-15 02:16:17,838 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-02-15 02:16:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:17,838 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-02-15 02:16:17,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-02-15 02:16:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-15 02:16:17,839 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:17,839 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:17,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 02:16:17,840 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:17,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash 234096681, now seen corresponding path program 4 times [2022-02-15 02:16:17,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:17,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823844690] [2022-02-15 02:16:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:17,842 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:17,842 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:17,843 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:17,953 INFO 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 02:16:17,954 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:17,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823844690] [2022-02-15 02:16:17,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [823844690] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:17,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:17,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 02:16:17,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073403373] [2022-02-15 02:16:17,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:17,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 02:16:17,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 02:16:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-15 02:16:17,955 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:18,088 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-02-15 02:16:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 02:16:18,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 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 14 [2022-02-15 02:16:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:18,091 INFO L225 Difference]: With dead ends: 25 [2022-02-15 02:16:18,091 INFO L226 Difference]: Without dead ends: 23 [2022-02-15 02:16:18,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-02-15 02:16:18,092 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:18,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 23 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-15 02:16:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2022-02-15 02:16:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 16 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 02:16:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-02-15 02:16:18,100 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2022-02-15 02:16:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:18,100 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-02-15 02:16:18,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-02-15 02:16:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 02:16:18,101 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:18,101 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:18,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 02:16:18,102 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:18,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1332934410, now seen corresponding path program 4 times [2022-02-15 02:16:18,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:18,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666642945] [2022-02-15 02:16:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:18,105 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:18,105 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:18,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:18,106 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:18,237 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:18,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666642945] [2022-02-15 02:16:18,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [666642945] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:18,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:18,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 02:16:18,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661279951] [2022-02-15 02:16:18,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:18,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 02:16:18,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:18,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 02:16:18,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 02:16:18,239 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 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 02:16:18,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:18,320 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-02-15 02:16:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 02:16:18,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 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 02:16:18,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:18,323 INFO L225 Difference]: With dead ends: 23 [2022-02-15 02:16:18,323 INFO L226 Difference]: Without dead ends: 19 [2022-02-15 02:16:18,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-02-15 02:16:18,325 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:18,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-02-15 02:16:18,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-02-15 02:16:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 02:16:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-02-15 02:16:18,331 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2022-02-15 02:16:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:18,332 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-02-15 02:16:18,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 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 02:16:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-02-15 02:16:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-15 02:16:18,332 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:18,332 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:18,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 02:16:18,333 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1332885591, now seen corresponding path program 5 times [2022-02-15 02:16:18,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:18,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325025770] [2022-02-15 02:16:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:18,335 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:18,335 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:18,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:18,336 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:18,461 INFO 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 02:16:18,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:18,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325025770] [2022-02-15 02:16:18,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [325025770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:18,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:18,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 02:16:18,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694363511] [2022-02-15 02:16:18,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:18,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 02:16:18,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 02:16:18,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-15 02:16:18,463 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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 02:16:18,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:18,610 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-02-15 02:16:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 02:16:18,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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 02:16:18,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:18,611 INFO L225 Difference]: With dead ends: 26 [2022-02-15 02:16:18,611 INFO L226 Difference]: Without dead ends: 24 [2022-02-15 02:16:18,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2022-02-15 02:16:18,612 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:18,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-15 02:16:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-02-15 02:16:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-02-15 02:16:18,617 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2022-02-15 02:16:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:18,618 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-02-15 02:16:18,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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 02:16:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-02-15 02:16:18,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-15 02:16:18,618 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:18,618 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:18,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 02:16:18,619 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1630222710, now seen corresponding path program 5 times [2022-02-15 02:16:18,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:18,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266366967] [2022-02-15 02:16:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:18,621 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:18,621 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:18,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:18,622 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:18,727 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 02:16:18,728 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:18,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266366967] [2022-02-15 02:16:18,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [266366967] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:18,728 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:18,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 02:16:18,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759718903] [2022-02-15 02:16:18,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:18,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 02:16:18,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:18,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 02:16:18,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-15 02:16:18,729 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:18,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:18,821 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-02-15 02:16:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 02:16:18,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (2), 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 16 [2022-02-15 02:16:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:18,822 INFO L225 Difference]: With dead ends: 24 [2022-02-15 02:16:18,822 INFO L226 Difference]: Without dead ends: 20 [2022-02-15 02:16:18,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-02-15 02:16:18,823 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:18,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:18,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-15 02:16:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-02-15 02:16:18,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 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 02:16:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-02-15 02:16:18,828 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 16 [2022-02-15 02:16:18,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:18,828 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-02-15 02:16:18,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-02-15 02:16:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-15 02:16:18,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:18,829 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:18,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 02:16:18,829 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1630271529, now seen corresponding path program 6 times [2022-02-15 02:16:18,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:18,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639924337] [2022-02-15 02:16:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:18,831 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:18,831 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:18,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:18,832 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:18,948 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 02:16:18,949 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:18,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639924337] [2022-02-15 02:16:18,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1639924337] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:18,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:18,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 02:16:18,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812898696] [2022-02-15 02:16:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:18,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 02:16:18,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 02:16:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-15 02:16:18,950 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:19,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:19,114 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-02-15 02:16:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 02:16:19,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 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 16 [2022-02-15 02:16:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:19,115 INFO L225 Difference]: With dead ends: 27 [2022-02-15 02:16:19,115 INFO L226 Difference]: Without dead ends: 25 [2022-02-15 02:16:19,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:16:19,116 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:19,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-15 02:16:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-02-15 02:16:19,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 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 02:16:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-02-15 02:16:19,121 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2022-02-15 02:16:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:19,121 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-02-15 02:16:19,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-02-15 02:16:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 02:16:19,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:19,122 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:19,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 02:16:19,122 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1001187082, now seen corresponding path program 6 times [2022-02-15 02:16:19,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:19,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070092443] [2022-02-15 02:16:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:19,125 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:19,125 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:19,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:19,126 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:19,261 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:19,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070092443] [2022-02-15 02:16:19,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2070092443] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:19,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:19,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 02:16:19,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452878744] [2022-02-15 02:16:19,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:19,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 02:16:19,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:19,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 02:16:19,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-02-15 02:16:19,263 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:19,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:19,365 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-02-15 02:16:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 02:16:19,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-02-15 02:16:19,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:19,366 INFO L225 Difference]: With dead ends: 25 [2022-02-15 02:16:19,366 INFO L226 Difference]: Without dead ends: 21 [2022-02-15 02:16:19,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:16:19,367 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:19,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-15 02:16:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-02-15 02:16:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 17 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 02:16:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-02-15 02:16:19,372 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-02-15 02:16:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:19,372 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-02-15 02:16:19,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-02-15 02:16:19,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 02:16:19,372 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:19,372 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:19,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 02:16:19,373 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1001138263, now seen corresponding path program 7 times [2022-02-15 02:16:19,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:19,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488227460] [2022-02-15 02:16:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:19,374 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:19,375 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:19,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:19,375 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:19,485 INFO 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 02:16:19,485 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:19,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488227460] [2022-02-15 02:16:19,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [488227460] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:19,485 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:19,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 02:16:19,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444922420] [2022-02-15 02:16:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:19,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 02:16:19,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:19,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 02:16:19,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-15 02:16:19,486 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:19,672 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-02-15 02:16:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 02:16:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-02-15 02:16:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:19,672 INFO L225 Difference]: With dead ends: 28 [2022-02-15 02:16:19,672 INFO L226 Difference]: Without dead ends: 26 [2022-02-15 02:16:19,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2022-02-15 02:16:19,673 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:19,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:19,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-15 02:16:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-02-15 02:16:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 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 02:16:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-02-15 02:16:19,678 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2022-02-15 02:16:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:19,679 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-02-15 02:16:19,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-02-15 02:16:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 02:16:19,679 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:19,679 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:19,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 02:16:19,680 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash -970512010, now seen corresponding path program 7 times [2022-02-15 02:16:19,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:19,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252595926] [2022-02-15 02:16:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:19,682 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:19,682 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:19,684 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:19,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:19,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252595926] [2022-02-15 02:16:19,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1252595926] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:19,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:19,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 02:16:19,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352390903] [2022-02-15 02:16:19,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:19,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 02:16:19,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 02:16:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-02-15 02:16:19,812 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 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 02:16:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:19,920 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-02-15 02:16:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 02:16:19,922 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 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 02:16:19,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:19,928 INFO L225 Difference]: With dead ends: 26 [2022-02-15 02:16:19,928 INFO L226 Difference]: Without dead ends: 22 [2022-02-15 02:16:19,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-02-15 02:16:19,929 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:19,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-15 02:16:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-02-15 02:16:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 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 02:16:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-02-15 02:16:19,933 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2022-02-15 02:16:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:19,933 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-02-15 02:16:19,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 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 02:16:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-02-15 02:16:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 02:16:19,934 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:19,934 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:19,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 02:16:19,934 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:19,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash -970463191, now seen corresponding path program 8 times [2022-02-15 02:16:19,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:19,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402005886] [2022-02-15 02:16:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:19,941 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:19,941 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:19,942 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:20,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:20,088 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:20,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402005886] [2022-02-15 02:16:20,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [402005886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:20,089 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:20,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 02:16:20,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882297825] [2022-02-15 02:16:20,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:20,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 02:16:20,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 02:16:20,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-02-15 02:16:20,090 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 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 02:16:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:20,306 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-02-15 02:16:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 02:16:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 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 02:16:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:20,307 INFO L225 Difference]: With dead ends: 29 [2022-02-15 02:16:20,307 INFO L226 Difference]: Without dead ends: 27 [2022-02-15 02:16:20,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=263, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:16:20,308 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:20,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:20,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-15 02:16:20,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-02-15 02:16:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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 02:16:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-02-15 02:16:20,313 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2022-02-15 02:16:20,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:20,313 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-02-15 02:16:20,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 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 02:16:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-02-15 02:16:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 02:16:20,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:20,314 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:20,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 02:16:20,314 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:20,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:20,314 INFO L85 PathProgramCache]: Analyzing trace with hash -19584778, now seen corresponding path program 8 times [2022-02-15 02:16:20,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:20,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308070602] [2022-02-15 02:16:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:20,316 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:20,316 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:20,317 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:20,439 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 02:16:20,439 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:20,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308070602] [2022-02-15 02:16:20,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [308070602] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:20,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:20,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 02:16:20,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616489666] [2022-02-15 02:16:20,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:20,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 02:16:20,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:20,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 02:16:20,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-02-15 02:16:20,441 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:20,557 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-02-15 02:16:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 02:16:20,557 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-02-15 02:16:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:20,557 INFO L225 Difference]: With dead ends: 27 [2022-02-15 02:16:20,558 INFO L226 Difference]: Without dead ends: 23 [2022-02-15 02:16:20,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:16:20,558 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:20,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:20,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-15 02:16:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-15 02:16:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 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 02:16:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-02-15 02:16:20,563 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2022-02-15 02:16:20,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:20,563 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-02-15 02:16:20,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:20,563 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-02-15 02:16:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-15 02:16:20,563 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:20,563 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:20,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 02:16:20,564 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:20,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash -19535959, now seen corresponding path program 9 times [2022-02-15 02:16:20,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:20,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832656696] [2022-02-15 02:16:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:20,565 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:20,565 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:20,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:20,566 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:20,696 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:20,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832656696] [2022-02-15 02:16:20,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1832656696] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:20,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:20,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 02:16:20,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642041935] [2022-02-15 02:16:20,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:20,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 02:16:20,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 02:16:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-02-15 02:16:20,698 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:20,933 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-02-15 02:16:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 02:16:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-02-15 02:16:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:20,934 INFO L225 Difference]: With dead ends: 30 [2022-02-15 02:16:20,934 INFO L226 Difference]: Without dead ends: 28 [2022-02-15 02:16:20,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=317, Unknown=0, NotChecked=0, Total=506 [2022-02-15 02:16:20,935 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:20,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:20,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-15 02:16:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-02-15 02:16:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 21 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 02:16:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-02-15 02:16:20,940 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2022-02-15 02:16:20,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:20,940 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-02-15 02:16:20,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-02-15 02:16:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 02:16:20,941 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:20,941 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:20,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 02:16:20,941 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash -605611658, now seen corresponding path program 9 times [2022-02-15 02:16:20,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:20,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934402573] [2022-02-15 02:16:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:20,943 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:20,943 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:20,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:20,944 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:21,078 INFO 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 02:16:21,078 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:21,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934402573] [2022-02-15 02:16:21,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1934402573] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:21,079 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:21,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 02:16:21,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422832813] [2022-02-15 02:16:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:21,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 02:16:21,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 02:16:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-02-15 02:16:21,080 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 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 02:16:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:21,222 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-02-15 02:16:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 02:16:21,222 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 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 02:16:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:21,223 INFO L225 Difference]: With dead ends: 28 [2022-02-15 02:16:21,223 INFO L226 Difference]: Without dead ends: 24 [2022-02-15 02:16:21,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-02-15 02:16:21,224 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:21,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-15 02:16:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-15 02:16:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 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 02:16:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-02-15 02:16:21,228 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2022-02-15 02:16:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:21,228 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-02-15 02:16:21,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 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 02:16:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-02-15 02:16:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 02:16:21,229 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:21,229 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:21,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 02:16:21,229 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash -605562839, now seen corresponding path program 10 times [2022-02-15 02:16:21,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:21,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044337775] [2022-02-15 02:16:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:21,231 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:21,231 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:21,232 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:21,370 INFO 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 02:16:21,370 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:21,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044337775] [2022-02-15 02:16:21,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2044337775] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:21,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:21,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 02:16:21,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632731317] [2022-02-15 02:16:21,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:21,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 02:16:21,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 02:16:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-02-15 02:16:21,371 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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 02:16:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:21,643 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-02-15 02:16:21,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 02:16:21,643 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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 02:16:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:21,644 INFO L225 Difference]: With dead ends: 31 [2022-02-15 02:16:21,644 INFO L226 Difference]: Without dead ends: 29 [2022-02-15 02:16:21,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=376, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:16:21,645 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:21,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-15 02:16:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-02-15 02:16:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-02-15 02:16:21,649 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2022-02-15 02:16:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:21,650 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-02-15 02:16:21,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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 02:16:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-02-15 02:16:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 02:16:21,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:21,650 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:21,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 02:16:21,651 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:21,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1592575754, now seen corresponding path program 10 times [2022-02-15 02:16:21,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:21,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068983231] [2022-02-15 02:16:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:21,652 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:21,652 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:21,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:21,653 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:21,826 INFO 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 02:16:21,826 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:21,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068983231] [2022-02-15 02:16:21,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2068983231] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:21,826 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:21,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 02:16:21,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037330576] [2022-02-15 02:16:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:21,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 02:16:21,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 02:16:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-02-15 02:16:21,828 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:21,988 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-02-15 02:16:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 02:16:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-15 02:16:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:21,989 INFO L225 Difference]: With dead ends: 29 [2022-02-15 02:16:21,989 INFO L226 Difference]: Without dead ends: 25 [2022-02-15 02:16:21,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:16:21,990 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:21,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-15 02:16:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-02-15 02:16:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 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 02:16:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-02-15 02:16:21,993 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 21 [2022-02-15 02:16:21,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:21,993 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-02-15 02:16:21,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-02-15 02:16:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-15 02:16:21,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:21,993 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:21,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 02:16:21,994 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1592526935, now seen corresponding path program 11 times [2022-02-15 02:16:21,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:21,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915873887] [2022-02-15 02:16:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:21,996 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:21,996 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:21,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:21,996 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:22,162 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 02:16:22,163 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:22,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915873887] [2022-02-15 02:16:22,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [915873887] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:22,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:22,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 02:16:22,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351306879] [2022-02-15 02:16:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:22,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 02:16:22,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 02:16:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-02-15 02:16:22,164 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:22,449 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-02-15 02:16:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 02:16:22,450 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-15 02:16:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:22,451 INFO L225 Difference]: With dead ends: 32 [2022-02-15 02:16:22,451 INFO L226 Difference]: Without dead ends: 30 [2022-02-15 02:16:22,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=440, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:16:22,452 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:22,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-15 02:16:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-02-15 02:16:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 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 02:16:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-02-15 02:16:22,456 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 21 [2022-02-15 02:16:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:22,457 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-02-15 02:16:22,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-02-15 02:16:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 02:16:22,457 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:22,457 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:22,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 02:16:22,458 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:22,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2123691658, now seen corresponding path program 11 times [2022-02-15 02:16:22,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:22,458 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355589902] [2022-02-15 02:16:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:22,459 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:22,459 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:22,460 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:22,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:22,632 INFO 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 02:16:22,632 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:22,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355589902] [2022-02-15 02:16:22,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1355589902] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:22,633 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:22,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 02:16:22,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386845410] [2022-02-15 02:16:22,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:22,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 02:16:22,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:22,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 02:16:22,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-02-15 02:16:22,634 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 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 02:16:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:22,803 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-02-15 02:16:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 02:16:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 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 02:16:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:22,804 INFO L225 Difference]: With dead ends: 30 [2022-02-15 02:16:22,804 INFO L226 Difference]: Without dead ends: 26 [2022-02-15 02:16:22,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:16:22,805 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:22,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-15 02:16:22,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-15 02:16:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 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 02:16:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-02-15 02:16:22,809 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2022-02-15 02:16:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:22,810 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-02-15 02:16:22,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 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 02:16:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-02-15 02:16:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 02:16:22,810 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:22,810 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:22,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 02:16:22,810 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2123642839, now seen corresponding path program 12 times [2022-02-15 02:16:22,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:22,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278978105] [2022-02-15 02:16:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:22,812 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:22,812 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:22,813 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:22,980 INFO 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 02:16:22,980 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:22,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278978105] [2022-02-15 02:16:22,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1278978105] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:22,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:22,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 02:16:22,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012334082] [2022-02-15 02:16:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:22,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 02:16:22,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 02:16:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2022-02-15 02:16:22,988 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 02:16:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:23,283 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-02-15 02:16:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:16:23,283 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 02:16:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:23,283 INFO L225 Difference]: With dead ends: 33 [2022-02-15 02:16:23,283 INFO L226 Difference]: Without dead ends: 31 [2022-02-15 02:16:23,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=303, Invalid=509, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:16:23,284 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:23,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-15 02:16:23,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-02-15 02:16:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 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 02:16:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-02-15 02:16:23,289 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2022-02-15 02:16:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:23,289 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-02-15 02:16:23,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 02:16:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-02-15 02:16:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 02:16:23,289 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:23,289 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:23,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 02:16:23,290 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1408415498, now seen corresponding path program 12 times [2022-02-15 02:16:23,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:23,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398021627] [2022-02-15 02:16:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:23,291 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:23,291 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:23,292 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:23,478 INFO 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 02:16:23,478 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:23,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398021627] [2022-02-15 02:16:23,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1398021627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:23,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:23,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 02:16:23,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077861933] [2022-02-15 02:16:23,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:23,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 02:16:23,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 02:16:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-02-15 02:16:23,480 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:23,664 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-02-15 02:16:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 02:16:23,664 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-15 02:16:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:23,665 INFO L225 Difference]: With dead ends: 31 [2022-02-15 02:16:23,665 INFO L226 Difference]: Without dead ends: 27 [2022-02-15 02:16:23,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:16:23,666 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:23,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-15 02:16:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-15 02:16:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-02-15 02:16:23,670 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2022-02-15 02:16:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:23,670 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-02-15 02:16:23,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-02-15 02:16:23,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-15 02:16:23,670 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:23,670 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:23,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 02:16:23,671 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:23,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1408366679, now seen corresponding path program 13 times [2022-02-15 02:16:23,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:23,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720412170] [2022-02-15 02:16:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:23,672 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:23,672 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:23,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:23,673 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:23,866 INFO 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 02:16:23,866 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:23,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720412170] [2022-02-15 02:16:23,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [720412170] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:23,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:23,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:16:23,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245043757] [2022-02-15 02:16:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:23,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:16:23,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:16:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:16:23,868 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:24,162 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-02-15 02:16:24,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:16:24,162 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-15 02:16:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:24,163 INFO L225 Difference]: With dead ends: 34 [2022-02-15 02:16:24,163 INFO L226 Difference]: Without dead ends: 32 [2022-02-15 02:16:24,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=347, Invalid=583, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:16:24,164 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:24,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 23 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-15 02:16:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-02-15 02:16:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 25 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 02:16:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-02-15 02:16:24,168 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2022-02-15 02:16:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:24,168 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-02-15 02:16:24,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-02-15 02:16:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 02:16:24,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:24,169 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:24,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 02:16:24,169 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:24,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash -709691018, now seen corresponding path program 13 times [2022-02-15 02:16:24,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:24,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413767042] [2022-02-15 02:16:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:24,171 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:24,171 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:24,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:24,171 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:24,382 INFO 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 02:16:24,382 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:24,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413767042] [2022-02-15 02:16:24,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [413767042] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:24,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:24,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 02:16:24,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076707861] [2022-02-15 02:16:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:24,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 02:16:24,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 02:16:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-02-15 02:16:24,383 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 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 02:16:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:24,576 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-02-15 02:16:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 02:16:24,576 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 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 02:16:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:24,576 INFO L225 Difference]: With dead ends: 32 [2022-02-15 02:16:24,576 INFO L226 Difference]: Without dead ends: 28 [2022-02-15 02:16:24,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:16:24,577 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:24,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-15 02:16:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-02-15 02:16:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 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 02:16:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-02-15 02:16:24,581 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 24 [2022-02-15 02:16:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:24,581 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-02-15 02:16:24,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 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 02:16:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-02-15 02:16:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-15 02:16:24,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:24,582 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:24,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 02:16:24,582 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash -709642199, now seen corresponding path program 14 times [2022-02-15 02:16:24,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:24,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942771331] [2022-02-15 02:16:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:24,584 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:24,584 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:24,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:24,585 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:24,821 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:24,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942771331] [2022-02-15 02:16:24,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1942771331] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:24,821 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:24,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 02:16:24,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491107566] [2022-02-15 02:16:24,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:24,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 02:16:24,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:24,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 02:16:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2022-02-15 02:16:24,822 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 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 02:16:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:25,159 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-02-15 02:16:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 02:16:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 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 02:16:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:25,160 INFO L225 Difference]: With dead ends: 35 [2022-02-15 02:16:25,160 INFO L226 Difference]: Without dead ends: 33 [2022-02-15 02:16:25,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=662, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:16:25,161 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:25,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-15 02:16:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-02-15 02:16:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 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 02:16:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-02-15 02:16:25,165 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2022-02-15 02:16:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:25,165 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-02-15 02:16:25,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 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 02:16:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-02-15 02:16:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 02:16:25,166 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:25,166 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:25,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 02:16:25,166 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash -524068618, now seen corresponding path program 14 times [2022-02-15 02:16:25,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:25,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814908027] [2022-02-15 02:16:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:25,168 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:25,168 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:25,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:25,169 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:25,403 INFO 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 02:16:25,403 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:25,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814908027] [2022-02-15 02:16:25,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1814908027] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:25,403 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:25,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 02:16:25,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753354210] [2022-02-15 02:16:25,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:25,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 02:16:25,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 02:16:25,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-02-15 02:16:25,404 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:25,612 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-02-15 02:16:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 02:16:25,613 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-15 02:16:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:25,613 INFO L225 Difference]: With dead ends: 33 [2022-02-15 02:16:25,613 INFO L226 Difference]: Without dead ends: 29 [2022-02-15 02:16:25,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:16:25,614 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:25,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-15 02:16:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-15 02:16:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 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 02:16:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-02-15 02:16:25,618 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 25 [2022-02-15 02:16:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:25,619 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-02-15 02:16:25,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-02-15 02:16:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-15 02:16:25,619 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:25,619 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:25,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 02:16:25,619 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:25,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -524019799, now seen corresponding path program 15 times [2022-02-15 02:16:25,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:25,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025119820] [2022-02-15 02:16:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:25,621 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:25,621 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:25,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:25,622 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:25,866 INFO 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 02:16:25,866 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:25,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025119820] [2022-02-15 02:16:25,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1025119820] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:25,867 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:25,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 02:16:25,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32028196] [2022-02-15 02:16:25,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:25,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 02:16:25,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 02:16:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2022-02-15 02:16:25,868 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:26,221 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-02-15 02:16:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 02:16:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-02-15 02:16:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:26,224 INFO L225 Difference]: With dead ends: 36 [2022-02-15 02:16:26,224 INFO L226 Difference]: Without dead ends: 34 [2022-02-15 02:16:26,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=444, Invalid=746, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:16:26,225 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:26,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-15 02:16:26,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-02-15 02:16:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-02-15 02:16:26,229 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2022-02-15 02:16:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:26,229 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-02-15 02:16:26,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-02-15 02:16:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 02:16:26,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:26,230 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:26,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 02:16:26,230 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:26,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:26,230 INFO L85 PathProgramCache]: Analyzing trace with hash 935258486, now seen corresponding path program 15 times [2022-02-15 02:16:26,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:26,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254627945] [2022-02-15 02:16:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:26,232 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:26,232 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:26,233 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:26,476 INFO 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 02:16:26,476 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:26,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254627945] [2022-02-15 02:16:26,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [254627945] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:26,476 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:26,476 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 02:16:26,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475688403] [2022-02-15 02:16:26,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:26,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 02:16:26,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:26,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 02:16:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-02-15 02:16:26,477 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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 02:16:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:26,710 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-02-15 02:16:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 02:16:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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 02:16:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:26,711 INFO L225 Difference]: With dead ends: 34 [2022-02-15 02:16:26,711 INFO L226 Difference]: Without dead ends: 30 [2022-02-15 02:16:26,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:16:26,712 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:26,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-15 02:16:26,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-02-15 02:16:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.08) internal successors, (27), 26 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 02:16:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-02-15 02:16:26,716 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2022-02-15 02:16:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:26,716 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-02-15 02:16:26,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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 02:16:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-02-15 02:16:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 02:16:26,717 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:26,717 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:26,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 02:16:26,717 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:26,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash 935307305, now seen corresponding path program 16 times [2022-02-15 02:16:26,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:26,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360601265] [2022-02-15 02:16:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:26,718 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:26,718 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:26,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:26,719 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:26,970 INFO 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 02:16:26,970 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:26,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360601265] [2022-02-15 02:16:26,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [360601265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:26,970 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:26,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 02:16:26,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702857489] [2022-02-15 02:16:26,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:26,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 02:16:26,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:26,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 02:16:26,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2022-02-15 02:16:26,972 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 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 02:16:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:27,364 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-02-15 02:16:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 02:16:27,364 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 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 02:16:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:27,365 INFO L225 Difference]: With dead ends: 37 [2022-02-15 02:16:27,365 INFO L226 Difference]: Without dead ends: 35 [2022-02-15 02:16:27,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=497, Invalid=835, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:16:27,366 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:27,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-15 02:16:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-02-15 02:16:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 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 02:16:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-02-15 02:16:27,376 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 26 [2022-02-15 02:16:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:27,376 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-02-15 02:16:27,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 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 02:16:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-02-15 02:16:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 02:16:27,377 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:27,377 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:27,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 02:16:27,377 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1070241546, now seen corresponding path program 16 times [2022-02-15 02:16:27,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:27,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891509557] [2022-02-15 02:16:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:27,381 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:27,382 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:27,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:27,383 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:27,674 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:27,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891509557] [2022-02-15 02:16:27,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [891509557] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:27,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:27,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 02:16:27,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32536060] [2022-02-15 02:16:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:27,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 02:16:27,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 02:16:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-02-15 02:16:27,675 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 20 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:27,927 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-02-15 02:16:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 02:16:27,928 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 02:16:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:27,928 INFO L225 Difference]: With dead ends: 35 [2022-02-15 02:16:27,928 INFO L226 Difference]: Without dead ends: 31 [2022-02-15 02:16:27,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:16:27,929 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:27,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:27,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-15 02:16:27,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-15 02:16:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 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 02:16:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-02-15 02:16:27,933 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2022-02-15 02:16:27,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:27,933 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-02-15 02:16:27,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-02-15 02:16:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 02:16:27,934 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:27,934 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:27,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 02:16:27,934 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1070192727, now seen corresponding path program 17 times [2022-02-15 02:16:27,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:27,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854554746] [2022-02-15 02:16:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:27,936 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:27,936 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:27,936 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:28,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:28,207 INFO 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 02:16:28,207 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:28,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854554746] [2022-02-15 02:16:28,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1854554746] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:28,207 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:28,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 02:16:28,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838773566] [2022-02-15 02:16:28,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:28,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 02:16:28,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:28,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 02:16:28,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:16:28,208 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:28,685 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-02-15 02:16:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 02:16:28,686 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 02:16:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:28,686 INFO L225 Difference]: With dead ends: 38 [2022-02-15 02:16:28,686 INFO L226 Difference]: Without dead ends: 36 [2022-02-15 02:16:28,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=553, Invalid=929, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:16:28,687 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:28,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-15 02:16:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-02-15 02:16:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 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 02:16:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-02-15 02:16:28,693 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 27 [2022-02-15 02:16:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:28,693 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-02-15 02:16:28,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-02-15 02:16:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 02:16:28,693 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:28,693 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:28,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 02:16:28,693 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1183766902, now seen corresponding path program 17 times [2022-02-15 02:16:28,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:28,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861444042] [2022-02-15 02:16:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:28,695 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:28,695 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:28,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:28,696 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:28,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:28,990 INFO 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 02:16:28,990 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:28,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861444042] [2022-02-15 02:16:28,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [861444042] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:28,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:28,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 02:16:28,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329990044] [2022-02-15 02:16:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:28,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 02:16:28,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:28,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 02:16:28,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-02-15 02:16:28,991 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 21 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 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 02:16:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:29,257 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-02-15 02:16:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 02:16:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 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 02:16:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:29,258 INFO L225 Difference]: With dead ends: 36 [2022-02-15 02:16:29,258 INFO L226 Difference]: Without dead ends: 32 [2022-02-15 02:16:29,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:16:29,260 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:29,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-15 02:16:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-02-15 02:16:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 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 02:16:29,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2022-02-15 02:16:29,265 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 28 [2022-02-15 02:16:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:29,265 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2022-02-15 02:16:29,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 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 02:16:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2022-02-15 02:16:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 02:16:29,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:29,266 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:29,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 02:16:29,266 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:29,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1183815721, now seen corresponding path program 18 times [2022-02-15 02:16:29,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:29,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529462366] [2022-02-15 02:16:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:29,268 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:29,268 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:29,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:29,269 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:29,549 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:29,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529462366] [2022-02-15 02:16:29,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [529462366] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:29,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:29,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 02:16:29,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242543181] [2022-02-15 02:16:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:29,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 02:16:29,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 02:16:29,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2022-02-15 02:16:29,550 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 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 02:16:30,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:30,002 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-02-15 02:16:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:16:30,002 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 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 02:16:30,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:30,003 INFO L225 Difference]: With dead ends: 39 [2022-02-15 02:16:30,003 INFO L226 Difference]: Without dead ends: 37 [2022-02-15 02:16:30,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=612, Invalid=1028, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:16:30,004 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:30,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-15 02:16:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2022-02-15 02:16:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 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 02:16:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-02-15 02:16:30,008 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 28 [2022-02-15 02:16:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:30,008 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-02-15 02:16:30,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 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 02:16:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-02-15 02:16:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 02:16:30,009 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:30,009 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:30,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 02:16:30,009 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:30,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1956415242, now seen corresponding path program 18 times [2022-02-15 02:16:30,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:30,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187419391] [2022-02-15 02:16:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:30,012 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:30,012 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:30,013 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:30,293 INFO 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 02:16:30,293 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:30,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187419391] [2022-02-15 02:16:30,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1187419391] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:30,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:30,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 02:16:30,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266214245] [2022-02-15 02:16:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:30,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 02:16:30,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 02:16:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-02-15 02:16:30,295 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:30,576 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-02-15 02:16:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 02:16:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 02:16:30,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:30,576 INFO L225 Difference]: With dead ends: 37 [2022-02-15 02:16:30,577 INFO L226 Difference]: Without dead ends: 33 [2022-02-15 02:16:30,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:16:30,577 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:30,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-15 02:16:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-15 02:16:30,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 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 02:16:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-02-15 02:16:30,594 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2022-02-15 02:16:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:30,594 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-02-15 02:16:30,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-02-15 02:16:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 02:16:30,595 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:30,595 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:30,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 02:16:30,595 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:30,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1956366423, now seen corresponding path program 19 times [2022-02-15 02:16:30,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:30,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847496998] [2022-02-15 02:16:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:30,598 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:30,598 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:30,599 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:30,901 INFO 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 02:16:30,901 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:30,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847496998] [2022-02-15 02:16:30,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1847496998] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:30,901 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:30,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 02:16:30,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122632550] [2022-02-15 02:16:30,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:30,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 02:16:30,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 02:16:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2022-02-15 02:16:30,902 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:31,425 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-02-15 02:16:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 02:16:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 02:16:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:31,426 INFO L225 Difference]: With dead ends: 40 [2022-02-15 02:16:31,426 INFO L226 Difference]: Without dead ends: 38 [2022-02-15 02:16:31,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=674, Invalid=1132, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:16:31,427 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:31,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-02-15 02:16:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-02-15 02:16:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 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 02:16:31,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-02-15 02:16:31,432 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 29 [2022-02-15 02:16:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:31,432 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-02-15 02:16:31,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-02-15 02:16:31,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 02:16:31,433 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:31,433 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:31,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 02:16:31,433 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -517813898, now seen corresponding path program 19 times [2022-02-15 02:16:31,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:31,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042617915] [2022-02-15 02:16:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:31,434 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:31,435 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:31,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:31,435 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:31,737 INFO 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 02:16:31,738 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:31,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042617915] [2022-02-15 02:16:31,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2042617915] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:31,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:31,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 02:16:31,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583129258] [2022-02-15 02:16:31,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:31,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 02:16:31,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 02:16:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-02-15 02:16:31,739 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 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 02:16:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:32,078 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-02-15 02:16:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 02:16:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 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 02:16:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:32,080 INFO L225 Difference]: With dead ends: 38 [2022-02-15 02:16:32,080 INFO L226 Difference]: Without dead ends: 34 [2022-02-15 02:16:32,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:16:32,081 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:32,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-15 02:16:32,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-02-15 02:16:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 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 02:16:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-02-15 02:16:32,090 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 30 [2022-02-15 02:16:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:32,090 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-02-15 02:16:32,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 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 02:16:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-02-15 02:16:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 02:16:32,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:32,091 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:32,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 02:16:32,091 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -517765079, now seen corresponding path program 20 times [2022-02-15 02:16:32,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:32,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165224556] [2022-02-15 02:16:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:32,092 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:32,092 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:32,093 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:32,411 INFO 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 02:16:32,411 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:32,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165224556] [2022-02-15 02:16:32,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1165224556] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:32,411 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:32,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:16:32,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033628475] [2022-02-15 02:16:32,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:32,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:16:32,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:16:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:16:32,412 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 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 02:16:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:32,918 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2022-02-15 02:16:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:16:32,918 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 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 02:16:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:32,918 INFO L225 Difference]: With dead ends: 41 [2022-02-15 02:16:32,918 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 02:16:32,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=739, Invalid=1241, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:16:32,920 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:32,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 02:16:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-02-15 02:16:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-02-15 02:16:32,924 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2022-02-15 02:16:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:32,924 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-02-15 02:16:32,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 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 02:16:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-02-15 02:16:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 02:16:32,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:32,924 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:32,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 02:16:32,925 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:32,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1129154806, now seen corresponding path program 20 times [2022-02-15 02:16:32,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:32,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562268776] [2022-02-15 02:16:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:32,926 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:32,926 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:32,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:32,927 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:33,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:33,226 INFO 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 02:16:33,226 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:33,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562268776] [2022-02-15 02:16:33,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [562268776] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:33,226 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:33,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 02:16:33,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671118543] [2022-02-15 02:16:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:33,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 02:16:33,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 02:16:33,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-02-15 02:16:33,227 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:33,533 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-02-15 02:16:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 02:16:33,533 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-02-15 02:16:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:33,534 INFO L225 Difference]: With dead ends: 39 [2022-02-15 02:16:33,534 INFO L226 Difference]: Without dead ends: 35 [2022-02-15 02:16:33,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:16:33,535 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:33,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-15 02:16:33,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-02-15 02:16:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 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 02:16:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-02-15 02:16:33,548 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 31 [2022-02-15 02:16:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:33,548 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-02-15 02:16:33,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-02-15 02:16:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 02:16:33,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:33,549 INFO L514 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:33,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 02:16:33,549 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:33,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1129203625, now seen corresponding path program 21 times [2022-02-15 02:16:33,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:33,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561791275] [2022-02-15 02:16:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:33,550 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:33,550 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:33,551 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:33,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:33,899 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:33,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561791275] [2022-02-15 02:16:33,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1561791275] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:33,900 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:33,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:16:33,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317952014] [2022-02-15 02:16:33,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:33,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:16:33,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:33,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:16:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:16:33,901 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:34,508 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-02-15 02:16:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:16:34,508 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-02-15 02:16:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:34,509 INFO L225 Difference]: With dead ends: 42 [2022-02-15 02:16:34,509 INFO L226 Difference]: Without dead ends: 40 [2022-02-15 02:16:34,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=807, Invalid=1355, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:16:34,510 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:34,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-02-15 02:16:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-02-15 02:16:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 33 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 02:16:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2022-02-15 02:16:34,514 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 31 [2022-02-15 02:16:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:34,515 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2022-02-15 02:16:34,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:34,515 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2022-02-15 02:16:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-15 02:16:34,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:34,515 INFO L514 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:34,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 02:16:34,515 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash 645577078, now seen corresponding path program 21 times [2022-02-15 02:16:34,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:34,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331164060] [2022-02-15 02:16:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:34,517 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:34,517 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:34,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:34,518 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:34,862 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:34,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331164060] [2022-02-15 02:16:34,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [331164060] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:34,862 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:34,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 02:16:34,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046312057] [2022-02-15 02:16:34,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:34,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 02:16:34,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 02:16:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-02-15 02:16:34,864 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:35,195 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-02-15 02:16:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 02:16:35,195 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 1 states have call successors, (2), 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 32 [2022-02-15 02:16:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:35,196 INFO L225 Difference]: With dead ends: 40 [2022-02-15 02:16:35,196 INFO L226 Difference]: Without dead ends: 36 [2022-02-15 02:16:35,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:16:35,197 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:35,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-15 02:16:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-02-15 02:16:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 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 02:16:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-02-15 02:16:35,202 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 32 [2022-02-15 02:16:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:35,202 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-02-15 02:16:35,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-02-15 02:16:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-15 02:16:35,202 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:35,202 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:35,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 02:16:35,203 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash 645625897, now seen corresponding path program 22 times [2022-02-15 02:16:35,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:35,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945016236] [2022-02-15 02:16:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:35,204 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:35,204 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:35,205 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:35,556 INFO 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 02:16:35,556 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:35,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945016236] [2022-02-15 02:16:35,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1945016236] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:35,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:35,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 02:16:35,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054493980] [2022-02-15 02:16:35,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:35,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 02:16:35,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 02:16:35,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:16:35,558 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:36,104 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2022-02-15 02:16:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 02:16:36,104 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 1 states have call successors, (2), 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 32 [2022-02-15 02:16:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:36,105 INFO L225 Difference]: With dead ends: 43 [2022-02-15 02:16:36,105 INFO L226 Difference]: Without dead ends: 41 [2022-02-15 02:16:36,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=878, Invalid=1474, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 02:16:36,106 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:36,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-15 02:16:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-02-15 02:16:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 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 02:16:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2022-02-15 02:16:36,111 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 32 [2022-02-15 02:16:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:36,111 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2022-02-15 02:16:36,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2022-02-15 02:16:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 02:16:36,111 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:36,111 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:36,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 02:16:36,111 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1460430602, now seen corresponding path program 22 times [2022-02-15 02:16:36,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:36,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819173713] [2022-02-15 02:16:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:36,113 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:36,113 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:36,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:36,114 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:36,454 INFO 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 02:16:36,454 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:36,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819173713] [2022-02-15 02:16:36,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1819173713] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:36,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:36,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 02:16:36,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208333728] [2022-02-15 02:16:36,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:36,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 02:16:36,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:36,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 02:16:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-02-15 02:16:36,456 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 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 02:16:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:36,794 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2022-02-15 02:16:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 02:16:36,794 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 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 02:16:36,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:36,794 INFO L225 Difference]: With dead ends: 41 [2022-02-15 02:16:36,794 INFO L226 Difference]: Without dead ends: 37 [2022-02-15 02:16:36,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 02:16:36,795 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:36,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-15 02:16:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-02-15 02:16:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-02-15 02:16:36,800 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 33 [2022-02-15 02:16:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:36,800 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-02-15 02:16:36,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 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 02:16:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-02-15 02:16:36,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 02:16:36,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:36,801 INFO L514 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:36,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 02:16:36,801 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1460381783, now seen corresponding path program 23 times [2022-02-15 02:16:36,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:36,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559003535] [2022-02-15 02:16:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:36,802 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:36,803 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:36,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:36,803 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:37,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:37,148 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:37,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559003535] [2022-02-15 02:16:37,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [559003535] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:37,148 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:37,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 02:16:37,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662708188] [2022-02-15 02:16:37,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:37,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 02:16:37,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:37,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 02:16:37,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:16:37,149 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 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 02:16:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:37,714 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-02-15 02:16:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 02:16:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 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 02:16:37,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:37,715 INFO L225 Difference]: With dead ends: 44 [2022-02-15 02:16:37,715 INFO L226 Difference]: Without dead ends: 42 [2022-02-15 02:16:37,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=1598, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:16:37,717 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:37,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-15 02:16:37,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2022-02-15 02:16:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 35 states have internal predecessors, (37), 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 02:16:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-02-15 02:16:37,724 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 33 [2022-02-15 02:16:37,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:37,724 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-02-15 02:16:37,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 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 02:16:37,724 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-02-15 02:16:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-15 02:16:37,724 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:37,724 INFO L514 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:37,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 02:16:37,725 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1972808054, now seen corresponding path program 23 times [2022-02-15 02:16:37,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:37,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649942775] [2022-02-15 02:16:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:37,729 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:37,729 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:37,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:37,730 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:38,142 INFO 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 02:16:38,142 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:38,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649942775] [2022-02-15 02:16:38,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [649942775] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:38,142 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:38,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 02:16:38,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363255704] [2022-02-15 02:16:38,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:38,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 02:16:38,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:38,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 02:16:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-02-15 02:16:38,144 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:38,493 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-02-15 02:16:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 02:16:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 1 states have call successors, (2), 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 34 [2022-02-15 02:16:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:38,493 INFO L225 Difference]: With dead ends: 42 [2022-02-15 02:16:38,493 INFO L226 Difference]: Without dead ends: 38 [2022-02-15 02:16:38,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:16:38,494 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:38,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-02-15 02:16:38,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-02-15 02:16:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 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 02:16:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-02-15 02:16:38,499 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 34 [2022-02-15 02:16:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:38,500 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-02-15 02:16:38,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-02-15 02:16:38,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-15 02:16:38,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:38,500 INFO L514 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:38,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 02:16:38,500 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1972856873, now seen corresponding path program 24 times [2022-02-15 02:16:38,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:38,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034034010] [2022-02-15 02:16:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:38,501 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:38,502 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:38,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:38,502 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:38,921 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:38,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034034010] [2022-02-15 02:16:38,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1034034010] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:38,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:38,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 02:16:38,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207588511] [2022-02-15 02:16:38,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:38,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 02:16:38,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 02:16:38,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2022-02-15 02:16:38,922 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:39,529 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2022-02-15 02:16:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 02:16:39,529 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 1 states have call successors, (2), 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 34 [2022-02-15 02:16:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:39,529 INFO L225 Difference]: With dead ends: 45 [2022-02-15 02:16:39,530 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 02:16:39,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1029, Invalid=1727, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:16:39,531 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:39,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 02:16:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2022-02-15 02:16:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 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 02:16:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-02-15 02:16:39,535 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 34 [2022-02-15 02:16:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:39,535 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-02-15 02:16:39,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-02-15 02:16:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 02:16:39,536 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:39,536 INFO L514 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:39,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 02:16:39,536 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1029023990, now seen corresponding path program 24 times [2022-02-15 02:16:39,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:39,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72432761] [2022-02-15 02:16:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:39,537 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:39,538 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:39,538 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:39,947 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:39,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72432761] [2022-02-15 02:16:39,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [72432761] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:39,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:39,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 02:16:39,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040402720] [2022-02-15 02:16:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:39,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 02:16:39,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 02:16:39,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-02-15 02:16:39,948 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 28 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 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 02:16:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:40,323 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2022-02-15 02:16:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 02:16:40,323 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 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 02:16:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:40,324 INFO L225 Difference]: With dead ends: 43 [2022-02-15 02:16:40,324 INFO L226 Difference]: Without dead ends: 39 [2022-02-15 02:16:40,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:16:40,325 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:40,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-15 02:16:40,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-15 02:16:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 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 02:16:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2022-02-15 02:16:40,329 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 35 [2022-02-15 02:16:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:40,330 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2022-02-15 02:16:40,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 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 02:16:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2022-02-15 02:16:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 02:16:40,330 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:40,330 INFO L514 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:40,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 02:16:40,330 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:40,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:40,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1029072809, now seen corresponding path program 25 times [2022-02-15 02:16:40,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:40,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484676646] [2022-02-15 02:16:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:40,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:40,332 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:40,332 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:40,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:40,736 INFO 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 02:16:40,736 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:40,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484676646] [2022-02-15 02:16:40,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [484676646] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:40,736 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:40,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 02:16:40,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522283321] [2022-02-15 02:16:40,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:40,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 02:16:40,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:40,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 02:16:40,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:16:40,737 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 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 02:16:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:41,378 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-02-15 02:16:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:16:41,378 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 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 02:16:41,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:41,378 INFO L225 Difference]: With dead ends: 46 [2022-02-15 02:16:41,378 INFO L226 Difference]: Without dead ends: 44 [2022-02-15 02:16:41,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1109, Invalid=1861, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:16:41,379 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:41,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-15 02:16:41,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-02-15 02:16:41,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 37 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-02-15 02:16:41,384 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 35 [2022-02-15 02:16:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:41,384 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-02-15 02:16:41,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 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 02:16:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-02-15 02:16:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 02:16:41,384 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:41,384 INFO L514 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:41,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 02:16:41,384 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1836489078, now seen corresponding path program 25 times [2022-02-15 02:16:41,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:41,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057318662] [2022-02-15 02:16:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:41,385 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:41,385 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:41,386 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:41,864 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:41,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057318662] [2022-02-15 02:16:41,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1057318662] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:41,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:41,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 02:16:41,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822061769] [2022-02-15 02:16:41,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:41,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 02:16:41,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 02:16:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-02-15 02:16:41,866 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 29 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:42,321 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-02-15 02:16:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 02:16:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 1 states have call successors, (2), 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 36 [2022-02-15 02:16:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:42,322 INFO L225 Difference]: With dead ends: 44 [2022-02-15 02:16:42,322 INFO L226 Difference]: Without dead ends: 40 [2022-02-15 02:16:42,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:16:42,324 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:42,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:42,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-02-15 02:16:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-02-15 02:16:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 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 02:16:42,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2022-02-15 02:16:42,329 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 36 [2022-02-15 02:16:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:42,329 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2022-02-15 02:16:42,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2022-02-15 02:16:42,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 02:16:42,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:42,329 INFO L514 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:42,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 02:16:42,330 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:42,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1836537897, now seen corresponding path program 26 times [2022-02-15 02:16:42,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:42,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350224630] [2022-02-15 02:16:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:42,335 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:42,335 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:42,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:42,336 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:42,807 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 02:16:42,807 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:42,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350224630] [2022-02-15 02:16:42,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1350224630] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:42,808 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:42,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 02:16:42,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266817952] [2022-02-15 02:16:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:42,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 02:16:42,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:42,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 02:16:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2022-02-15 02:16:42,809 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:43,507 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-02-15 02:16:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 02:16:43,507 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 1 states have call successors, (2), 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 36 [2022-02-15 02:16:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:43,507 INFO L225 Difference]: With dead ends: 47 [2022-02-15 02:16:43,507 INFO L226 Difference]: Without dead ends: 45 [2022-02-15 02:16:43,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1192, Invalid=2000, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:16:43,508 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:43,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-15 02:16:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2022-02-15 02:16:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 38 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 02:16:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-02-15 02:16:43,514 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 36 [2022-02-15 02:16:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:43,514 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-02-15 02:16:43,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-02-15 02:16:43,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 02:16:43,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:43,514 INFO L514 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:43,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 02:16:43,515 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:43,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:43,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1098103030, now seen corresponding path program 26 times [2022-02-15 02:16:43,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:43,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601806537] [2022-02-15 02:16:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:43,516 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:43,516 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:43,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:43,517 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:44,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:44,028 INFO 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 02:16:44,028 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:44,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601806537] [2022-02-15 02:16:44,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [601806537] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:44,028 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:44,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 02:16:44,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454214611] [2022-02-15 02:16:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:44,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 02:16:44,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:44,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 02:16:44,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-02-15 02:16:44,029 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 30 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 29 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 02:16:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:44,449 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2022-02-15 02:16:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 02:16:44,450 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 29 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 02:16:44,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:44,450 INFO L225 Difference]: With dead ends: 45 [2022-02-15 02:16:44,450 INFO L226 Difference]: Without dead ends: 41 [2022-02-15 02:16:44,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:16:44,451 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:44,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 02:16:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-15 02:16:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-02-15 02:16:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 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 02:16:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-02-15 02:16:44,456 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 37 [2022-02-15 02:16:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:44,456 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-02-15 02:16:44,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 29 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 02:16:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-02-15 02:16:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 02:16:44,457 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:44,457 INFO L514 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:44,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 02:16:44,457 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:44,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1098151849, now seen corresponding path program 27 times [2022-02-15 02:16:44,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:44,458 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924398648] [2022-02-15 02:16:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:44,459 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:44,459 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:44,459 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:44,964 INFO 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 02:16:44,964 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:44,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924398648] [2022-02-15 02:16:44,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [924398648] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:44,964 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:44,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:16:44,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577442548] [2022-02-15 02:16:44,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:44,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:16:44,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:44,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:16:44,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:16:44,965 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 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 02:16:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:45,679 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-02-15 02:16:45,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:16:45,680 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 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 02:16:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:45,680 INFO L225 Difference]: With dead ends: 48 [2022-02-15 02:16:45,680 INFO L226 Difference]: Without dead ends: 46 [2022-02-15 02:16:45,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1278, Invalid=2144, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:16:45,681 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:45,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-15 02:16:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-02-15 02:16:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 39 states have internal predecessors, (41), 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 02:16:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2022-02-15 02:16:45,686 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 37 [2022-02-15 02:16:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:45,686 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2022-02-15 02:16:45,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 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 02:16:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2022-02-15 02:16:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 02:16:45,687 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:45,687 INFO L514 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:45,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 02:16:45,687 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash -317027978, now seen corresponding path program 27 times [2022-02-15 02:16:45,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:45,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77818594] [2022-02-15 02:16:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:45,689 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:45,689 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:45,689 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:46,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:46,216 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 02:16:46,216 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:46,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77818594] [2022-02-15 02:16:46,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [77818594] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:46,216 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:46,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 02:16:46,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756523888] [2022-02-15 02:16:46,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:46,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 02:16:46,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 02:16:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-02-15 02:16:46,218 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 30 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:46,674 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-02-15 02:16:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 02:16:46,674 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 30 states have internal predecessors, (35), 1 states have call successors, (2), 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 38 [2022-02-15 02:16:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:46,675 INFO L225 Difference]: With dead ends: 46 [2022-02-15 02:16:46,675 INFO L226 Difference]: Without dead ends: 42 [2022-02-15 02:16:46,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:16:46,676 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:46,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:46,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-15 02:16:46,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-02-15 02:16:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2022-02-15 02:16:46,681 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 38 [2022-02-15 02:16:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:46,681 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2022-02-15 02:16:46,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 30 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:46,681 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2022-02-15 02:16:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 02:16:46,681 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:46,681 INFO L514 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:46,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 02:16:46,682 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash -316979159, now seen corresponding path program 28 times [2022-02-15 02:16:46,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:46,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550557627] [2022-02-15 02:16:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:46,683 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:46,683 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:46,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:46,684 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:16:47,195 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:47,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550557627] [2022-02-15 02:16:47,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1550557627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:47,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:47,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:16:47,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579831982] [2022-02-15 02:16:47,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:47,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:16:47,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:47,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:16:47,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:16:47,196 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:47,947 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-02-15 02:16:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:16:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 1 states have call successors, (2), 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 38 [2022-02-15 02:16:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:47,948 INFO L225 Difference]: With dead ends: 49 [2022-02-15 02:16:47,948 INFO L226 Difference]: Without dead ends: 47 [2022-02-15 02:16:47,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1367, Invalid=2293, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:16:47,949 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:47,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-15 02:16:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2022-02-15 02:16:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 40 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 02:16:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2022-02-15 02:16:47,955 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 38 [2022-02-15 02:16:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:47,955 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2022-02-15 02:16:47,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2022-02-15 02:16:47,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 02:16:47,955 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:47,955 INFO L514 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:47,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 02:16:47,956 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1236416266, now seen corresponding path program 28 times [2022-02-15 02:16:47,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:47,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157147878] [2022-02-15 02:16:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:47,957 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:47,957 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:47,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:47,958 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:48,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:48,467 INFO 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 02:16:48,467 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:48,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157147878] [2022-02-15 02:16:48,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1157147878] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:48,467 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:48,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 02:16:48,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244674931] [2022-02-15 02:16:48,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:48,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 02:16:48,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 02:16:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-02-15 02:16:48,468 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 32 states, 32 states have (on average 1.125) internal successors, (36), 31 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 02:16:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:48,948 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-02-15 02:16:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 02:16:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 31 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 02:16:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:48,949 INFO L225 Difference]: With dead ends: 47 [2022-02-15 02:16:48,949 INFO L226 Difference]: Without dead ends: 43 [2022-02-15 02:16:48,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:16:48,950 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:48,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-15 02:16:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-02-15 02:16:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 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 02:16:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2022-02-15 02:16:48,955 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 39 [2022-02-15 02:16:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:48,956 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2022-02-15 02:16:48,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 31 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 02:16:48,956 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2022-02-15 02:16:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 02:16:48,956 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:48,956 INFO L514 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:48,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 02:16:48,956 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:48,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1236367447, now seen corresponding path program 29 times [2022-02-15 02:16:48,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:48,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671070298] [2022-02-15 02:16:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:48,958 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:48,958 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:48,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:48,958 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:49,521 INFO 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 02:16:49,521 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:49,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671070298] [2022-02-15 02:16:49,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [671070298] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:49,521 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:49,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:16:49,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794606798] [2022-02-15 02:16:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:49,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:16:49,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:16:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:16:49,522 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 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 02:16:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:50,324 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2022-02-15 02:16:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 02:16:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 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 02:16:50,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:50,325 INFO L225 Difference]: With dead ends: 50 [2022-02-15 02:16:50,325 INFO L226 Difference]: Without dead ends: 48 [2022-02-15 02:16:50,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1459, Invalid=2447, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:16:50,326 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:50,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-15 02:16:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-02-15 02:16:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 41 states have internal predecessors, (43), 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 02:16:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-02-15 02:16:50,332 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 39 [2022-02-15 02:16:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:50,332 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-02-15 02:16:50,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 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 02:16:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-02-15 02:16:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 02:16:50,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:50,333 INFO L514 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:50,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 02:16:50,333 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:50,333 INFO L85 PathProgramCache]: Analyzing trace with hash 327317878, now seen corresponding path program 29 times [2022-02-15 02:16:50,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:50,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376788016] [2022-02-15 02:16:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:50,334 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:50,334 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:50,335 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:50,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:50,935 INFO 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 02:16:50,935 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:50,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376788016] [2022-02-15 02:16:50,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [376788016] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:50,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:50,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-15 02:16:50,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872172725] [2022-02-15 02:16:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:50,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 02:16:50,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 02:16:50,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 02:16:50,936 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 33 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:51,432 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-02-15 02:16:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 02:16:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-02-15 02:16:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:51,433 INFO L225 Difference]: With dead ends: 48 [2022-02-15 02:16:51,433 INFO L226 Difference]: Without dead ends: 44 [2022-02-15 02:16:51,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:16:51,433 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:51,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-15 02:16:51,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-02-15 02:16:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 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 02:16:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2022-02-15 02:16:51,438 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 40 [2022-02-15 02:16:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:51,438 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2022-02-15 02:16:51,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2022-02-15 02:16:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 02:16:51,439 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:51,439 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:51,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 02:16:51,439 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash 327366697, now seen corresponding path program 30 times [2022-02-15 02:16:51,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:51,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543729936] [2022-02-15 02:16:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:51,440 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:51,440 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:51,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:51,441 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:51,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:51,963 INFO 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 02:16:51,964 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:51,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543729936] [2022-02-15 02:16:51,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [543729936] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:51,964 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:51,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 02:16:51,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757165214] [2022-02-15 02:16:51,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:51,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 02:16:51,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 02:16:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 02:16:51,965 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:52,817 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2022-02-15 02:16:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 02:16:52,817 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-02-15 02:16:52,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:52,818 INFO L225 Difference]: With dead ends: 51 [2022-02-15 02:16:52,818 INFO L226 Difference]: Without dead ends: 49 [2022-02-15 02:16:52,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1554, Invalid=2606, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:16:52,819 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:52,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-15 02:16:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-02-15 02:16:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 42 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-02-15 02:16:52,825 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40 [2022-02-15 02:16:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:52,825 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-02-15 02:16:52,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-02-15 02:16:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 02:16:52,825 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:52,825 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:52,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 02:16:52,826 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:52,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1558436086, now seen corresponding path program 30 times [2022-02-15 02:16:52,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:52,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163610391] [2022-02-15 02:16:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:52,827 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:52,827 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:52,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:52,828 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:53,460 INFO 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 02:16:53,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:53,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163610391] [2022-02-15 02:16:53,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [163610391] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:53,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:53,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-15 02:16:53,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79695892] [2022-02-15 02:16:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:53,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 02:16:53,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 02:16:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 02:16:53,462 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 34 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 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 02:16:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:53,971 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-02-15 02:16:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 02:16:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 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 02:16:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:53,972 INFO L225 Difference]: With dead ends: 49 [2022-02-15 02:16:53,972 INFO L226 Difference]: Without dead ends: 45 [2022-02-15 02:16:53,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:16:53,973 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:53,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-15 02:16:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-02-15 02:16:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.05) internal successors, (42), 41 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 02:16:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2022-02-15 02:16:53,978 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 41 [2022-02-15 02:16:53,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:53,978 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2022-02-15 02:16:53,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 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 02:16:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2022-02-15 02:16:53,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-15 02:16:53,979 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:53,979 INFO L514 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:53,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 02:16:53,979 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:53,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1558484905, now seen corresponding path program 31 times [2022-02-15 02:16:53,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:53,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218476545] [2022-02-15 02:16:53,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:53,981 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:53,981 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:53,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:53,981 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:54,534 INFO 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 02:16:54,534 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:54,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218476545] [2022-02-15 02:16:54,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [218476545] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:54,535 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:54,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:16:54,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057090417] [2022-02-15 02:16:54,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:54,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:16:54,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:54,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:16:54,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:16:54,536 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 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 02:16:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:55,455 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-02-15 02:16:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 02:16:55,456 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 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 02:16:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:55,456 INFO L225 Difference]: With dead ends: 52 [2022-02-15 02:16:55,456 INFO L226 Difference]: Without dead ends: 50 [2022-02-15 02:16:55,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1652, Invalid=2770, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:16:55,457 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:55,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-15 02:16:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-02-15 02:16:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 43 states have internal predecessors, (45), 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 02:16:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-02-15 02:16:55,461 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 41 [2022-02-15 02:16:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:55,461 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-02-15 02:16:55,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 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 02:16:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-02-15 02:16:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 02:16:55,461 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:55,461 INFO L514 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:55,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 02:16:55,461 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:55,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:55,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1068394870, now seen corresponding path program 31 times [2022-02-15 02:16:55,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:55,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745870838] [2022-02-15 02:16:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:55,463 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:55,463 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:55,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:55,464 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:56,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:56,024 INFO 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 02:16:56,024 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:56,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745870838] [2022-02-15 02:16:56,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1745870838] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:56,024 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:56,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-15 02:16:56,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233068688] [2022-02-15 02:16:56,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:56,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 02:16:56,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 02:16:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 02:16:56,025 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:56,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:56,583 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2022-02-15 02:16:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 02:16:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 1 states have call successors, (2), 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 42 [2022-02-15 02:16:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:56,583 INFO L225 Difference]: With dead ends: 50 [2022-02-15 02:16:56,583 INFO L226 Difference]: Without dead ends: 46 [2022-02-15 02:16:56,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:16:56,584 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:56,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-15 02:16:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-02-15 02:16:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 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 02:16:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2022-02-15 02:16:56,590 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 42 [2022-02-15 02:16:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:56,590 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2022-02-15 02:16:56,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2022-02-15 02:16:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 02:16:56,591 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:56,591 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:56,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 02:16:56,591 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1068443689, now seen corresponding path program 32 times [2022-02-15 02:16:56,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:56,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056539939] [2022-02-15 02:16:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:56,593 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:56,593 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:56,593 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:57,132 INFO 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 02:16:57,132 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:57,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056539939] [2022-02-15 02:16:57,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1056539939] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:57,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:57,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 02:16:57,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110331385] [2022-02-15 02:16:57,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:57,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 02:16:57,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:57,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 02:16:57,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:16:57,134 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:58,044 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2022-02-15 02:16:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 02:16:58,044 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 1 states have call successors, (2), 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 42 [2022-02-15 02:16:58,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:58,045 INFO L225 Difference]: With dead ends: 53 [2022-02-15 02:16:58,045 INFO L226 Difference]: Without dead ends: 51 [2022-02-15 02:16:58,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1753, Invalid=2939, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:16:58,046 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:58,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-15 02:16:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-02-15 02:16:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 states have internal predecessors, (46), 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 02:16:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-02-15 02:16:58,052 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 42 [2022-02-15 02:16:58,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:58,052 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-02-15 02:16:58,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:16:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-02-15 02:16:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-15 02:16:58,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:58,052 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:58,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-15 02:16:58,053 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:58,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:58,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1237980938, now seen corresponding path program 32 times [2022-02-15 02:16:58,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:58,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482939221] [2022-02-15 02:16:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:58,054 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:58,054 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:58,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:58,055 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:58,659 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 02:16:58,659 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:58,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482939221] [2022-02-15 02:16:58,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1482939221] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:58,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:58,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-15 02:16:58,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371787779] [2022-02-15 02:16:58,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:58,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-15 02:16:58,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:58,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-15 02:16:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 02:16:58,660 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 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 02:16:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:16:59,254 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2022-02-15 02:16:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 02:16:59,254 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 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 02:16:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:16:59,254 INFO L225 Difference]: With dead ends: 51 [2022-02-15 02:16:59,254 INFO L226 Difference]: Without dead ends: 47 [2022-02-15 02:16:59,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:16:59,255 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:16:59,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:16:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-15 02:16:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-02-15 02:16:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 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 02:16:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-02-15 02:16:59,261 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 43 [2022-02-15 02:16:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:16:59,261 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-02-15 02:16:59,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 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 02:16:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-02-15 02:16:59,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-15 02:16:59,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:16:59,262 INFO L514 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:16:59,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-15 02:16:59,262 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:16:59,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:16:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1237932119, now seen corresponding path program 33 times [2022-02-15 02:16:59,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:16:59,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164923403] [2022-02-15 02:16:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:16:59,263 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:16:59,263 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:16:59,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:16:59,264 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:16:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:16:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:16:59,860 INFO 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 02:16:59,860 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:16:59,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164923403] [2022-02-15 02:16:59,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [164923403] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:16:59,860 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:16:59,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 02:16:59,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464236298] [2022-02-15 02:16:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:16:59,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 02:16:59,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:16:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 02:16:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:16:59,861 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 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 02:17:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:00,930 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-02-15 02:17:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 02:17:00,930 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 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 02:17:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:00,931 INFO L225 Difference]: With dead ends: 54 [2022-02-15 02:17:00,931 INFO L226 Difference]: Without dead ends: 52 [2022-02-15 02:17:00,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1857, Invalid=3113, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:17:00,932 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:00,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:00,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-15 02:17:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-02-15 02:17:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 45 states have internal predecessors, (47), 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 02:17:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-02-15 02:17:00,938 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 43 [2022-02-15 02:17:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:00,938 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-02-15 02:17:00,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 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 02:17:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-02-15 02:17:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-15 02:17:00,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:00,938 INFO L514 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:00,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-15 02:17:00,939 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:00,939 INFO L85 PathProgramCache]: Analyzing trace with hash 278813046, now seen corresponding path program 33 times [2022-02-15 02:17:00,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:00,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230294562] [2022-02-15 02:17:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:00,940 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:00,940 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:00,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:00,941 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:01,540 INFO 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 02:17:01,540 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:01,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230294562] [2022-02-15 02:17:01,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1230294562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:01,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:01,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-15 02:17:01,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336699107] [2022-02-15 02:17:01,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:01,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 02:17:01,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:01,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 02:17:01,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 02:17:01,541 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 36 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:02,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:02,146 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-02-15 02:17:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 02:17:02,147 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 36 states have internal predecessors, (41), 1 states have call successors, (2), 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 44 [2022-02-15 02:17:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:02,147 INFO L225 Difference]: With dead ends: 52 [2022-02-15 02:17:02,147 INFO L226 Difference]: Without dead ends: 48 [2022-02-15 02:17:02,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:17:02,148 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:02,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-15 02:17:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-02-15 02:17:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 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 02:17:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-02-15 02:17:02,154 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 44 [2022-02-15 02:17:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:02,154 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-02-15 02:17:02,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 36 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-02-15 02:17:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-15 02:17:02,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:02,154 INFO L514 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:02,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-15 02:17:02,155 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:02,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash 278861865, now seen corresponding path program 34 times [2022-02-15 02:17:02,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:02,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659205179] [2022-02-15 02:17:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:02,156 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:02,156 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:02,157 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:02,819 INFO 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 02:17:02,819 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:02,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659205179] [2022-02-15 02:17:02,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1659205179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:02,820 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:02,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 02:17:02,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151112444] [2022-02-15 02:17:02,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:02,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 02:17:02,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:02,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 02:17:02,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 02:17:02,821 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:03,821 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2022-02-15 02:17:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 02:17:03,821 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 1 states have call successors, (2), 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 44 [2022-02-15 02:17:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:03,822 INFO L225 Difference]: With dead ends: 55 [2022-02-15 02:17:03,822 INFO L226 Difference]: Without dead ends: 53 [2022-02-15 02:17:03,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1964, Invalid=3292, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:17:03,823 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:03,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:03,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-15 02:17:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-02-15 02:17:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 46 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 02:17:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-02-15 02:17:03,828 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 44 [2022-02-15 02:17:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:03,829 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-02-15 02:17:03,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-02-15 02:17:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 02:17:03,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:03,829 INFO L514 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:03,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-15 02:17:03,830 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:03,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash 54786294, now seen corresponding path program 34 times [2022-02-15 02:17:03,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:03,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536312585] [2022-02-15 02:17:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:03,831 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:03,831 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:03,832 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:04,488 INFO 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 02:17:04,488 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:04,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536312585] [2022-02-15 02:17:04,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1536312585] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:04,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:04,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-15 02:17:04,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583602026] [2022-02-15 02:17:04,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:04,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-15 02:17:04,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:04,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-15 02:17:04,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 02:17:04,489 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 38 states, 38 states have (on average 1.105263157894737) internal successors, (42), 37 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 02:17:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:05,164 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2022-02-15 02:17:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 02:17:05,164 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.105263157894737) internal successors, (42), 37 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 02:17:05,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:05,165 INFO L225 Difference]: With dead ends: 53 [2022-02-15 02:17:05,165 INFO L226 Difference]: Without dead ends: 49 [2022-02-15 02:17:05,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:17:05,166 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:05,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-15 02:17:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-02-15 02:17:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 45 states have internal predecessors, (46), 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 02:17:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-02-15 02:17:05,170 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 45 [2022-02-15 02:17:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:05,170 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-02-15 02:17:05,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.105263157894737) internal successors, (42), 37 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 02:17:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-02-15 02:17:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 02:17:05,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:05,170 INFO L514 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:05,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-15 02:17:05,171 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash 54835113, now seen corresponding path program 35 times [2022-02-15 02:17:05,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:05,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806510236] [2022-02-15 02:17:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:05,172 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:05,172 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:05,173 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:17:05,810 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:05,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806510236] [2022-02-15 02:17:05,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [806510236] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:05,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:05,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 02:17:05,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630738950] [2022-02-15 02:17:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:05,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 02:17:05,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 02:17:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:17:05,811 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 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 02:17:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:06,863 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2022-02-15 02:17:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 02:17:06,864 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 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 02:17:06,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:06,864 INFO L225 Difference]: With dead ends: 56 [2022-02-15 02:17:06,864 INFO L226 Difference]: Without dead ends: 54 [2022-02-15 02:17:06,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2074, Invalid=3476, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:17:06,865 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:06,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:06,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-15 02:17:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2022-02-15 02:17:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.065217391304348) internal successors, (49), 47 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-02-15 02:17:06,869 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 45 [2022-02-15 02:17:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:06,869 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-02-15 02:17:06,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 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 02:17:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-02-15 02:17:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 02:17:06,870 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:06,870 INFO L514 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:06,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-15 02:17:06,870 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1699891574, now seen corresponding path program 35 times [2022-02-15 02:17:06,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:06,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708291779] [2022-02-15 02:17:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:06,871 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:06,871 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:06,872 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:07,572 INFO 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 02:17:07,572 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:07,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708291779] [2022-02-15 02:17:07,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1708291779] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:07,572 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:07,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-15 02:17:07,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645268738] [2022-02-15 02:17:07,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:07,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-15 02:17:07,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:07,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-15 02:17:07,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 02:17:07,573 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:08,274 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-02-15 02:17:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 02:17:08,274 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 1 states have call successors, (2), 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 46 [2022-02-15 02:17:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:08,275 INFO L225 Difference]: With dead ends: 54 [2022-02-15 02:17:08,275 INFO L226 Difference]: Without dead ends: 50 [2022-02-15 02:17:08,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:17:08,276 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:08,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-15 02:17:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-02-15 02:17:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 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 02:17:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2022-02-15 02:17:08,282 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 46 [2022-02-15 02:17:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:08,282 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2022-02-15 02:17:08,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2022-02-15 02:17:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 02:17:08,282 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:08,282 INFO L514 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:08,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-15 02:17:08,283 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1699940393, now seen corresponding path program 36 times [2022-02-15 02:17:08,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:08,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467180528] [2022-02-15 02:17:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:08,284 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:08,284 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:08,285 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:08,988 INFO 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 02:17:08,988 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:08,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467180528] [2022-02-15 02:17:08,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [467180528] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:08,988 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:08,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 02:17:08,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035464608] [2022-02-15 02:17:08,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:08,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 02:17:08,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 02:17:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 02:17:08,990 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:10,079 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2022-02-15 02:17:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 02:17:10,080 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 1 states have call successors, (2), 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 46 [2022-02-15 02:17:10,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:10,080 INFO L225 Difference]: With dead ends: 57 [2022-02-15 02:17:10,080 INFO L226 Difference]: Without dead ends: 55 [2022-02-15 02:17:10,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2187, Invalid=3665, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:17:10,081 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:10,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-15 02:17:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2022-02-15 02:17:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 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 02:17:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2022-02-15 02:17:10,085 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 46 [2022-02-15 02:17:10,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:10,086 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2022-02-15 02:17:10,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2022-02-15 02:17:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 02:17:10,086 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:10,086 INFO L514 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:10,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-15 02:17:10,086 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1158547702, now seen corresponding path program 36 times [2022-02-15 02:17:10,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:10,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340804725] [2022-02-15 02:17:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:10,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:10,088 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:10,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:10,088 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:10,817 INFO 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 02:17:10,817 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:10,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340804725] [2022-02-15 02:17:10,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [340804725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:10,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:10,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-15 02:17:10,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849242054] [2022-02-15 02:17:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:10,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 02:17:10,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 02:17:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 02:17:10,818 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 40 states, 40 states have (on average 1.1) internal successors, (44), 39 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:11,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:11,496 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2022-02-15 02:17:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 02:17:11,496 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.1) internal successors, (44), 39 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-02-15 02:17:11,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:11,497 INFO L225 Difference]: With dead ends: 55 [2022-02-15 02:17:11,497 INFO L226 Difference]: Without dead ends: 51 [2022-02-15 02:17:11,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:17:11,497 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:11,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-15 02:17:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-02-15 02:17:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 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 02:17:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-02-15 02:17:11,503 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 47 [2022-02-15 02:17:11,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:11,503 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-02-15 02:17:11,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.1) internal successors, (44), 39 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:11,503 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-02-15 02:17:11,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 02:17:11,504 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:11,504 INFO L514 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:11,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-15 02:17:11,504 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1158596521, now seen corresponding path program 37 times [2022-02-15 02:17:11,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:11,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571349397] [2022-02-15 02:17:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:11,505 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:11,505 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:11,506 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:12,167 INFO 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 02:17:12,167 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:12,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571349397] [2022-02-15 02:17:12,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [571349397] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:12,167 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:12,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-15 02:17:12,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664471604] [2022-02-15 02:17:12,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:12,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 02:17:12,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:12,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 02:17:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=895, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:17:12,168 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:13,298 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2022-02-15 02:17:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 02:17:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-02-15 02:17:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:13,299 INFO L225 Difference]: With dead ends: 58 [2022-02-15 02:17:13,299 INFO L226 Difference]: Without dead ends: 56 [2022-02-15 02:17:13,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2303, Invalid=3859, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:17:13,300 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:13,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-15 02:17:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2022-02-15 02:17:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 49 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 02:17:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2022-02-15 02:17:13,304 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 47 [2022-02-15 02:17:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:13,304 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2022-02-15 02:17:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2022-02-15 02:17:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 02:17:13,305 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:13,305 INFO L514 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:13,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-15 02:17:13,305 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:13,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1556756854, now seen corresponding path program 37 times [2022-02-15 02:17:13,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:13,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305367116] [2022-02-15 02:17:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:13,306 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:13,306 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:13,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:13,306 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:14,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:14,127 INFO 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 02:17:14,127 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:14,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305367116] [2022-02-15 02:17:14,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [305367116] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:14,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:14,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-15 02:17:14,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237690498] [2022-02-15 02:17:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:14,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 02:17:14,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 02:17:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 02:17:14,128 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 41 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 40 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 02:17:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:14,913 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2022-02-15 02:17:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 02:17:14,913 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 40 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 02:17:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:14,917 INFO L225 Difference]: With dead ends: 56 [2022-02-15 02:17:14,917 INFO L226 Difference]: Without dead ends: 52 [2022-02-15 02:17:14,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:17:14,918 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:14,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-15 02:17:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-02-15 02:17:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2022-02-15 02:17:14,922 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 48 [2022-02-15 02:17:14,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:14,922 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2022-02-15 02:17:14,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 40 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 02:17:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2022-02-15 02:17:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 02:17:14,923 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:14,923 INFO L514 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:14,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-15 02:17:14,923 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:14,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1556805673, now seen corresponding path program 38 times [2022-02-15 02:17:14,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:14,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411011581] [2022-02-15 02:17:14,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:14,924 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:14,924 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:14,925 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:15,652 INFO 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 02:17:15,652 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:15,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411011581] [2022-02-15 02:17:15,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [411011581] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:15,652 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:15,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 02:17:15,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428993565] [2022-02-15 02:17:15,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:15,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 02:17:15,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:15,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 02:17:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=938, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 02:17:15,653 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 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 02:17:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:16,856 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-02-15 02:17:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 02:17:16,856 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 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 02:17:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:16,856 INFO L225 Difference]: With dead ends: 59 [2022-02-15 02:17:16,856 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 02:17:16,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2422, Invalid=4058, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:17:16,857 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:16,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 02:17:16,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-02-15 02:17:16,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 50 states have internal predecessors, (52), 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 02:17:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2022-02-15 02:17:16,861 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 48 [2022-02-15 02:17:16,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:16,862 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2022-02-15 02:17:16,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 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 02:17:16,862 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2022-02-15 02:17:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 02:17:16,862 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:16,862 INFO L514 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:16,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-15 02:17:16,862 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:16,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1016338678, now seen corresponding path program 38 times [2022-02-15 02:17:16,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:16,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946282608] [2022-02-15 02:17:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:16,863 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:16,863 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:16,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:16,864 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:17,625 INFO 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 02:17:17,625 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:17,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946282608] [2022-02-15 02:17:17,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1946282608] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:17,626 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:17,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-15 02:17:17,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032124161] [2022-02-15 02:17:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:17,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 02:17:17,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 02:17:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 02:17:17,627 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 42 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:18,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:18,390 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2022-02-15 02:17:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 02:17:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-02-15 02:17:18,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:18,391 INFO L225 Difference]: With dead ends: 57 [2022-02-15 02:17:18,391 INFO L226 Difference]: Without dead ends: 53 [2022-02-15 02:17:18,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:17:18,391 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:18,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-15 02:17:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-02-15 02:17:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 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 02:17:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2022-02-15 02:17:18,396 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 49 [2022-02-15 02:17:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:18,396 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2022-02-15 02:17:18,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2022-02-15 02:17:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-15 02:17:18,397 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:18,397 INFO L514 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:18,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-15 02:17:18,397 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1016387497, now seen corresponding path program 39 times [2022-02-15 02:17:18,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:18,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610217888] [2022-02-15 02:17:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:18,398 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:18,398 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:18,399 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:19,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:19,130 INFO 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 02:17:19,130 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:19,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610217888] [2022-02-15 02:17:19,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [610217888] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:19,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:19,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 02:17:19,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220718015] [2022-02-15 02:17:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:19,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 02:17:19,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 02:17:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=824, Invalid=982, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:17:19,131 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:20,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:20,364 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-02-15 02:17:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 02:17:20,364 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-02-15 02:17:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:20,365 INFO L225 Difference]: With dead ends: 60 [2022-02-15 02:17:20,365 INFO L226 Difference]: Without dead ends: 58 [2022-02-15 02:17:20,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2544, Invalid=4262, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:17:20,366 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:20,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-02-15 02:17:20,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-02-15 02:17:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 51 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 02:17:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2022-02-15 02:17:20,370 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 49 [2022-02-15 02:17:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:20,370 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2022-02-15 02:17:20,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2022-02-15 02:17:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 02:17:20,371 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:20,371 INFO L514 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:20,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-15 02:17:20,371 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1443244406, now seen corresponding path program 39 times [2022-02-15 02:17:20,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:20,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715736161] [2022-02-15 02:17:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:20,372 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:20,372 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:20,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:20,372 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:21,171 INFO 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 02:17:21,171 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:21,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715736161] [2022-02-15 02:17:21,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1715736161] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:21,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:21,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-15 02:17:21,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845553352] [2022-02-15 02:17:21,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:21,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-15 02:17:21,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:21,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-15 02:17:21,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 02:17:21,172 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 43 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 42 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 02:17:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:21,988 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2022-02-15 02:17:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 02:17:21,988 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 42 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 02:17:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:21,989 INFO L225 Difference]: With dead ends: 58 [2022-02-15 02:17:21,989 INFO L226 Difference]: Without dead ends: 54 [2022-02-15 02:17:21,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:17:21,990 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:21,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-15 02:17:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-02-15 02:17:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 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 02:17:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2022-02-15 02:17:21,997 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 50 [2022-02-15 02:17:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:21,997 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2022-02-15 02:17:21,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 42 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 02:17:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2022-02-15 02:17:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-15 02:17:21,998 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:21,998 INFO L514 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:21,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-15 02:17:21,998 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1443293225, now seen corresponding path program 40 times [2022-02-15 02:17:21,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:21,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042173511] [2022-02-15 02:17:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:22,000 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:22,000 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:22,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:22,000 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:22,773 INFO 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 02:17:22,773 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:22,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042173511] [2022-02-15 02:17:22,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1042173511] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:22,773 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:22,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-15 02:17:22,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912391390] [2022-02-15 02:17:22,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:22,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 02:17:22,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:22,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 02:17:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=1027, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 02:17:22,774 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 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 02:17:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:24,073 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2022-02-15 02:17:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 02:17:24,074 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 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 02:17:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:24,074 INFO L225 Difference]: With dead ends: 61 [2022-02-15 02:17:24,074 INFO L226 Difference]: Without dead ends: 59 [2022-02-15 02:17:24,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2669, Invalid=4471, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:17:24,075 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:24,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-15 02:17:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2022-02-15 02:17:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 52 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-02-15 02:17:24,080 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 50 [2022-02-15 02:17:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:24,080 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-02-15 02:17:24,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 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 02:17:24,080 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-02-15 02:17:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 02:17:24,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:24,080 INFO L514 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:24,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-15 02:17:24,080 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:24,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1792420086, now seen corresponding path program 40 times [2022-02-15 02:17:24,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:24,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520802983] [2022-02-15 02:17:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:24,081 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:24,081 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:24,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:24,082 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:24,888 INFO 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 02:17:24,888 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:24,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520802983] [2022-02-15 02:17:24,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [520802983] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:24,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:24,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-15 02:17:24,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63952696] [2022-02-15 02:17:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:24,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-15 02:17:24,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-15 02:17:24,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 02:17:24,889 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 44 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 43 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:25,786 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-02-15 02:17:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 02:17:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 43 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-02-15 02:17:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:25,787 INFO L225 Difference]: With dead ends: 59 [2022-02-15 02:17:25,787 INFO L226 Difference]: Without dead ends: 55 [2022-02-15 02:17:25,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:17:25,788 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:25,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:25,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-15 02:17:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-02-15 02:17:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 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 02:17:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-02-15 02:17:25,792 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 51 [2022-02-15 02:17:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:25,792 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-02-15 02:17:25,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 43 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-02-15 02:17:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 02:17:25,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:25,793 INFO L514 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:25,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-15 02:17:25,793 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1792468905, now seen corresponding path program 41 times [2022-02-15 02:17:25,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:25,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356065251] [2022-02-15 02:17:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:25,794 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:25,794 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:25,795 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:26,590 INFO 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 02:17:26,590 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:26,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356065251] [2022-02-15 02:17:26,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1356065251] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:26,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:26,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 02:17:26,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758553392] [2022-02-15 02:17:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:26,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 02:17:26,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 02:17:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=907, Invalid=1073, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:17:26,592 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:27,927 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2022-02-15 02:17:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 02:17:27,928 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-02-15 02:17:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:27,928 INFO L225 Difference]: With dead ends: 62 [2022-02-15 02:17:27,928 INFO L226 Difference]: Without dead ends: 60 [2022-02-15 02:17:27,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2797, Invalid=4685, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:17:27,929 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:27,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-02-15 02:17:27,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2022-02-15 02:17:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 53 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 02:17:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-02-15 02:17:27,933 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 51 [2022-02-15 02:17:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:27,934 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-02-15 02:17:27,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-02-15 02:17:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 02:17:27,934 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:27,934 INFO L514 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:27,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-15 02:17:27,934 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash -268035722, now seen corresponding path program 41 times [2022-02-15 02:17:27,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:27,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354646151] [2022-02-15 02:17:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:27,935 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:27,935 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:27,936 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:17:28,788 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:28,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354646151] [2022-02-15 02:17:28,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [354646151] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:28,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:28,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-15 02:17:28,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297287637] [2022-02-15 02:17:28,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:28,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 02:17:28,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:28,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 02:17:28,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 02:17:28,789 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 44 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 02:17:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:29,636 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-02-15 02:17:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 02:17:29,636 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 44 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 02:17:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:29,637 INFO L225 Difference]: With dead ends: 60 [2022-02-15 02:17:29,637 INFO L226 Difference]: Without dead ends: 56 [2022-02-15 02:17:29,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:17:29,638 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:29,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-15 02:17:29,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-02-15 02:17:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 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 02:17:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2022-02-15 02:17:29,643 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 52 [2022-02-15 02:17:29,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:29,643 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2022-02-15 02:17:29,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 44 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 02:17:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2022-02-15 02:17:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-15 02:17:29,643 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:29,643 INFO L514 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:29,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-15 02:17:29,644 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash -267986903, now seen corresponding path program 42 times [2022-02-15 02:17:29,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:29,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789758468] [2022-02-15 02:17:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:29,645 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:29,645 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:29,646 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:30,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:30,524 INFO 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 02:17:30,525 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:30,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789758468] [2022-02-15 02:17:30,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [789758468] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:30,525 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:30,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-15 02:17:30,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965725871] [2022-02-15 02:17:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:30,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-15 02:17:30,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-15 02:17:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=1120, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 02:17:30,526 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 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 02:17:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:31,935 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-02-15 02:17:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 02:17:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 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 02:17:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:31,936 INFO L225 Difference]: With dead ends: 63 [2022-02-15 02:17:31,936 INFO L226 Difference]: Without dead ends: 61 [2022-02-15 02:17:31,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2928, Invalid=4904, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:17:31,936 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:31,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-15 02:17:31,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2022-02-15 02:17:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 54 states have internal predecessors, (56), 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 02:17:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2022-02-15 02:17:31,943 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2022-02-15 02:17:31,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:31,943 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2022-02-15 02:17:31,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 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 02:17:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2022-02-15 02:17:31,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 02:17:31,944 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:31,944 INFO L514 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:31,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-15 02:17:31,944 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:31,944 INFO L85 PathProgramCache]: Analyzing trace with hash 282343670, now seen corresponding path program 42 times [2022-02-15 02:17:31,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:31,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967767351] [2022-02-15 02:17:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:31,945 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:31,945 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:31,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:31,946 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:32,825 INFO 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 02:17:32,825 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:32,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967767351] [2022-02-15 02:17:32,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1967767351] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:32,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:32,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-15 02:17:32,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125764418] [2022-02-15 02:17:32,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:32,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-15 02:17:32,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-15 02:17:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 02:17:32,826 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 46 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 45 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:33,701 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2022-02-15 02:17:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 02:17:33,701 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 45 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-02-15 02:17:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:33,702 INFO L225 Difference]: With dead ends: 61 [2022-02-15 02:17:33,702 INFO L226 Difference]: Without dead ends: 57 [2022-02-15 02:17:33,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:17:33,703 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:33,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:33,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-15 02:17:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-02-15 02:17:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2022-02-15 02:17:33,710 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 53 [2022-02-15 02:17:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:33,711 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2022-02-15 02:17:33,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 45 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2022-02-15 02:17:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 02:17:33,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:33,711 INFO L514 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:33,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-15 02:17:33,711 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash 282392489, now seen corresponding path program 43 times [2022-02-15 02:17:33,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:33,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632313796] [2022-02-15 02:17:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:33,713 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:33,714 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:33,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:33,722 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:34,625 INFO 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 02:17:34,625 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:34,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632313796] [2022-02-15 02:17:34,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [632313796] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:34,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:34,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 02:17:34,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846358366] [2022-02-15 02:17:34,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:34,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 02:17:34,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 02:17:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=994, Invalid=1168, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:17:34,626 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:36,090 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2022-02-15 02:17:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 02:17:36,091 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-02-15 02:17:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:36,094 INFO L225 Difference]: With dead ends: 64 [2022-02-15 02:17:36,094 INFO L226 Difference]: Without dead ends: 62 [2022-02-15 02:17:36,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3062, Invalid=5128, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:17:36,099 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:36,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-15 02:17:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2022-02-15 02:17:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 55 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 02:17:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2022-02-15 02:17:36,107 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 53 [2022-02-15 02:17:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:36,108 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2022-02-15 02:17:36,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2022-02-15 02:17:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 02:17:36,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:36,109 INFO L514 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:36,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-15 02:17:36,109 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash 164235638, now seen corresponding path program 43 times [2022-02-15 02:17:36,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:36,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333493652] [2022-02-15 02:17:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:36,117 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:36,117 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:36,118 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:37,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:37,008 INFO 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 02:17:37,008 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:37,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333493652] [2022-02-15 02:17:37,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1333493652] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:37,008 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:37,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-15 02:17:37,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174543601] [2022-02-15 02:17:37,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:37,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-15 02:17:37,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-15 02:17:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 02:17:37,009 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 47 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 46 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 02:17:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:38,019 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2022-02-15 02:17:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 02:17:38,020 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 46 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 02:17:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:38,020 INFO L225 Difference]: With dead ends: 62 [2022-02-15 02:17:38,020 INFO L226 Difference]: Without dead ends: 58 [2022-02-15 02:17:38,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:17:38,022 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:38,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-02-15 02:17:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-02-15 02:17:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 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 02:17:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2022-02-15 02:17:38,029 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 54 [2022-02-15 02:17:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:38,029 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2022-02-15 02:17:38,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 46 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 02:17:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2022-02-15 02:17:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 02:17:38,029 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:38,029 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:38,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-15 02:17:38,030 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash 164284457, now seen corresponding path program 44 times [2022-02-15 02:17:38,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:38,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348676647] [2022-02-15 02:17:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:38,031 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:38,031 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:38,032 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:38,997 INFO 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 02:17:38,997 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:38,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348676647] [2022-02-15 02:17:38,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [348676647] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:38,997 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:38,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-15 02:17:38,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181696563] [2022-02-15 02:17:38,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:38,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-15 02:17:38,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:38,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-15 02:17:38,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=1217, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 02:17:38,998 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 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 02:17:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:40,502 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-02-15 02:17:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 02:17:40,502 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 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 02:17:40,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:40,503 INFO L225 Difference]: With dead ends: 65 [2022-02-15 02:17:40,503 INFO L226 Difference]: Without dead ends: 63 [2022-02-15 02:17:40,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3199, Invalid=5357, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:17:40,504 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:40,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:40,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-15 02:17:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2022-02-15 02:17:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 56 states have internal predecessors, (58), 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 02:17:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2022-02-15 02:17:40,511 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 54 [2022-02-15 02:17:40,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:40,511 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2022-02-15 02:17:40,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 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 02:17:40,511 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2022-02-15 02:17:40,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 02:17:40,512 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:40,512 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:40,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-15 02:17:40,512 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:40,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:40,512 INFO L85 PathProgramCache]: Analyzing trace with hash 797853942, now seen corresponding path program 44 times [2022-02-15 02:17:40,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:40,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993590114] [2022-02-15 02:17:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:40,513 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:40,513 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:40,514 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:41,475 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 02:17:41,475 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:41,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993590114] [2022-02-15 02:17:41,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [993590114] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:41,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:41,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-15 02:17:41,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647698487] [2022-02-15 02:17:41,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:41,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-15 02:17:41,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:41,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-15 02:17:41,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 02:17:41,476 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:42,439 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-02-15 02:17:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 02:17:42,439 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-02-15 02:17:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:42,440 INFO L225 Difference]: With dead ends: 63 [2022-02-15 02:17:42,440 INFO L226 Difference]: Without dead ends: 59 [2022-02-15 02:17:42,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:17:42,441 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:42,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-15 02:17:42,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-02-15 02:17:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.037037037037037) internal successors, (56), 55 states have internal predecessors, (56), 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 02:17:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-02-15 02:17:42,448 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 55 [2022-02-15 02:17:42,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:42,448 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-02-15 02:17:42,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:42,448 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-02-15 02:17:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 02:17:42,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:42,449 INFO L514 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:42,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-15 02:17:42,449 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:42,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash 797902761, now seen corresponding path program 45 times [2022-02-15 02:17:42,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:42,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080726722] [2022-02-15 02:17:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:42,450 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:42,450 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:42,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:42,451 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:43,378 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 02:17:43,378 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:43,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080726722] [2022-02-15 02:17:43,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2080726722] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:43,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:43,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-15 02:17:43,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181643751] [2022-02-15 02:17:43,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:43,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-15 02:17:43,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:43,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-15 02:17:43,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=1267, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 02:17:43,379 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:44,928 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2022-02-15 02:17:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 02:17:44,929 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-02-15 02:17:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:44,929 INFO L225 Difference]: With dead ends: 66 [2022-02-15 02:17:44,929 INFO L226 Difference]: Without dead ends: 64 [2022-02-15 02:17:44,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3339, Invalid=5591, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 02:17:44,930 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:44,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-15 02:17:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-02-15 02:17:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 57 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2022-02-15 02:17:44,942 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2022-02-15 02:17:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:44,942 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2022-02-15 02:17:44,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2022-02-15 02:17:44,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 02:17:44,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:44,943 INFO L514 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:44,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-15 02:17:44,943 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1034815114, now seen corresponding path program 45 times [2022-02-15 02:17:44,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:44,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041519587] [2022-02-15 02:17:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:44,944 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:44,944 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:44,945 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:45,919 INFO 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 02:17:45,919 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:45,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041519587] [2022-02-15 02:17:45,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1041519587] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:45,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:45,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-15 02:17:45,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403555577] [2022-02-15 02:17:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:45,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-15 02:17:45,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:45,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-15 02:17:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 02:17:45,920 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 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 02:17:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:46,900 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2022-02-15 02:17:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 02:17:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 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 02:17:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:46,901 INFO L225 Difference]: With dead ends: 64 [2022-02-15 02:17:46,901 INFO L226 Difference]: Without dead ends: 60 [2022-02-15 02:17:46,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 02:17:46,902 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:46,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:46,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-02-15 02:17:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-02-15 02:17:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 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 02:17:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2022-02-15 02:17:46,909 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 56 [2022-02-15 02:17:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:46,910 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2022-02-15 02:17:46,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 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 02:17:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2022-02-15 02:17:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 02:17:46,910 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:46,910 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:46,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-15 02:17:46,910 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1034766295, now seen corresponding path program 46 times [2022-02-15 02:17:46,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:46,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235087278] [2022-02-15 02:17:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:46,912 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:46,912 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:46,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:46,912 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:47,866 INFO 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 02:17:47,866 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:47,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235087278] [2022-02-15 02:17:47,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1235087278] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:47,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:47,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-15 02:17:47,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866467961] [2022-02-15 02:17:47,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:47,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-15 02:17:47,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-15 02:17:47,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=1318, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 02:17:47,868 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 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 02:17:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:49,597 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2022-02-15 02:17:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 02:17:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 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 02:17:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:49,597 INFO L225 Difference]: With dead ends: 67 [2022-02-15 02:17:49,598 INFO L226 Difference]: Without dead ends: 65 [2022-02-15 02:17:49,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3482, Invalid=5830, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 02:17:49,598 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:49,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:49,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-15 02:17:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2022-02-15 02:17:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 58 states have internal predecessors, (60), 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 02:17:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2022-02-15 02:17:49,606 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 56 [2022-02-15 02:17:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:49,606 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2022-02-15 02:17:49,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 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 02:17:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2022-02-15 02:17:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 02:17:49,606 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:49,606 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:49,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-15 02:17:49,607 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2012981002, now seen corresponding path program 46 times [2022-02-15 02:17:49,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:49,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504146774] [2022-02-15 02:17:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:49,609 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:49,609 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:49,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:49,610 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:50,660 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 02:17:50,660 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:50,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504146774] [2022-02-15 02:17:50,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [504146774] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:50,660 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:50,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-15 02:17:50,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043129045] [2022-02-15 02:17:50,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:50,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-15 02:17:50,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:50,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-15 02:17:50,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 02:17:50,661 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 50 states, 50 states have (on average 1.08) internal successors, (54), 49 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:51,738 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-02-15 02:17:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 02:17:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.08) internal successors, (54), 49 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-02-15 02:17:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:51,739 INFO L225 Difference]: With dead ends: 65 [2022-02-15 02:17:51,739 INFO L226 Difference]: Without dead ends: 61 [2022-02-15 02:17:51,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 02:17:51,740 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:51,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-15 02:17:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-02-15 02:17:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 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 02:17:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2022-02-15 02:17:51,747 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 57 [2022-02-15 02:17:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:51,747 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2022-02-15 02:17:51,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.08) internal successors, (54), 49 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2022-02-15 02:17:51,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 02:17:51,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:51,748 INFO L514 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:51,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-15 02:17:51,748 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2012932183, now seen corresponding path program 47 times [2022-02-15 02:17:51,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:51,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640293787] [2022-02-15 02:17:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:51,749 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:51,749 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:51,750 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:17:52,738 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:52,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640293787] [2022-02-15 02:17:52,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1640293787] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:52,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:52,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-15 02:17:52,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735206874] [2022-02-15 02:17:52,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:52,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-15 02:17:52,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:52,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-15 02:17:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=1370, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:17:52,739 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:54,413 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2022-02-15 02:17:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 02:17:54,414 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-02-15 02:17:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:54,414 INFO L225 Difference]: With dead ends: 68 [2022-02-15 02:17:54,414 INFO L226 Difference]: Without dead ends: 66 [2022-02-15 02:17:54,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3628, Invalid=6074, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:17:54,415 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:54,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-02-15 02:17:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2022-02-15 02:17:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 59 states have internal predecessors, (61), 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 02:17:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2022-02-15 02:17:54,424 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 57 [2022-02-15 02:17:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:54,424 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2022-02-15 02:17:54,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:17:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2022-02-15 02:17:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 02:17:54,425 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:54,425 INFO L514 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:54,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-15 02:17:54,425 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:54,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:54,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2023614838, now seen corresponding path program 47 times [2022-02-15 02:17:54,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:54,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651456968] [2022-02-15 02:17:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:54,427 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:54,427 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:54,428 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:55,534 INFO 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 02:17:55,534 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:55,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651456968] [2022-02-15 02:17:55,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1651456968] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:55,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:55,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-15 02:17:55,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079349786] [2022-02-15 02:17:55,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:55,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-15 02:17:55,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:55,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-15 02:17:55,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 02:17:55,535 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 51 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 50 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 02:17:56,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:56,610 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2022-02-15 02:17:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 02:17:56,610 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 50 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 02:17:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:56,610 INFO L225 Difference]: With dead ends: 66 [2022-02-15 02:17:56,611 INFO L226 Difference]: Without dead ends: 62 [2022-02-15 02:17:56,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:17:56,612 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:56,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-15 02:17:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-02-15 02:17:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 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 02:17:56,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2022-02-15 02:17:56,616 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 58 [2022-02-15 02:17:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:56,616 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2022-02-15 02:17:56,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 50 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 02:17:56,617 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2022-02-15 02:17:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 02:17:56,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:56,617 INFO L514 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:56,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-15 02:17:56,617 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:56,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2023663657, now seen corresponding path program 48 times [2022-02-15 02:17:56,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:56,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044029673] [2022-02-15 02:17:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:56,618 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:56,618 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:56,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:56,619 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:57,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:17:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:17:57,659 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 02:17:57,659 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:17:57,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044029673] [2022-02-15 02:17:57,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1044029673] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:17:57,660 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:17:57,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-15 02:17:57,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888802279] [2022-02-15 02:17:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:17:57,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-15 02:17:57,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:17:57,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-15 02:17:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=1423, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 02:17:57,661 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 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 02:17:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:17:59,371 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2022-02-15 02:17:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 02:17:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 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 02:17:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:17:59,374 INFO L225 Difference]: With dead ends: 69 [2022-02-15 02:17:59,374 INFO L226 Difference]: Without dead ends: 67 [2022-02-15 02:17:59,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3777, Invalid=6323, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:17:59,376 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:17:59,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:17:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-15 02:17:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2022-02-15 02:17:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 60 states have internal predecessors, (62), 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 02:17:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-02-15 02:17:59,386 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 58 [2022-02-15 02:17:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:17:59,386 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-02-15 02:17:59,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 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 02:17:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-02-15 02:17:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 02:17:59,387 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:17:59,387 INFO L514 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:17:59,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-15 02:17:59,387 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:17:59,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:17:59,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1690933002, now seen corresponding path program 48 times [2022-02-15 02:17:59,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:17:59,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974131194] [2022-02-15 02:17:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:17:59,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:17:59,393 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:17:59,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:17:59,394 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:17:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:00,458 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:00,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974131194] [2022-02-15 02:18:00,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [974131194] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:00,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:00,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-15 02:18:00,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048541987] [2022-02-15 02:18:00,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:00,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-15 02:18:00,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-15 02:18:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 02:18:00,460 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 52 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 51 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:01,550 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2022-02-15 02:18:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 02:18:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 51 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-02-15 02:18:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:01,550 INFO L225 Difference]: With dead ends: 67 [2022-02-15 02:18:01,550 INFO L226 Difference]: Without dead ends: 63 [2022-02-15 02:18:01,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:18:01,552 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:01,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-15 02:18:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-02-15 02:18:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 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 02:18:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2022-02-15 02:18:01,559 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 59 [2022-02-15 02:18:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:01,559 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2022-02-15 02:18:01,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 51 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2022-02-15 02:18:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 02:18:01,560 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:01,560 INFO L514 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:01,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-15 02:18:01,560 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:01,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:01,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1690884183, now seen corresponding path program 49 times [2022-02-15 02:18:01,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:01,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311842850] [2022-02-15 02:18:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:01,562 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:01,562 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:01,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:01,562 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:02,678 INFO 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 02:18:02,678 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:02,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311842850] [2022-02-15 02:18:02,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [311842850] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:02,678 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:02,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-15 02:18:02,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028567033] [2022-02-15 02:18:02,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:02,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-15 02:18:02,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-15 02:18:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1279, Invalid=1477, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:18:02,679 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:04,433 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-02-15 02:18:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 02:18:04,433 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-02-15 02:18:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:04,434 INFO L225 Difference]: With dead ends: 70 [2022-02-15 02:18:04,434 INFO L226 Difference]: Without dead ends: 68 [2022-02-15 02:18:04,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3929, Invalid=6577, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:18:04,435 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:04,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:04,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-15 02:18:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2022-02-15 02:18:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.05) internal successors, (63), 61 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 02:18:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-02-15 02:18:04,443 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 59 [2022-02-15 02:18:04,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:04,444 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-02-15 02:18:04,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-02-15 02:18:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 02:18:04,444 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:04,444 INFO L514 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:04,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-15 02:18:04,445 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:04,445 INFO L85 PathProgramCache]: Analyzing trace with hash -877799050, now seen corresponding path program 49 times [2022-02-15 02:18:04,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:04,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604370092] [2022-02-15 02:18:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:04,446 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:04,446 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:04,447 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:05,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:05,545 INFO 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 02:18:05,545 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:05,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604370092] [2022-02-15 02:18:05,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1604370092] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:05,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:05,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-15 02:18:05,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8289767] [2022-02-15 02:18:05,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:05,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-15 02:18:05,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-15 02:18:05,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 02:18:05,547 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 52 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 02:18:06,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:06,717 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2022-02-15 02:18:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 02:18:06,717 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 52 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 02:18:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:06,718 INFO L225 Difference]: With dead ends: 68 [2022-02-15 02:18:06,718 INFO L226 Difference]: Without dead ends: 64 [2022-02-15 02:18:06,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:18:06,719 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:06,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-15 02:18:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-02-15 02:18:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 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 02:18:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2022-02-15 02:18:06,726 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 60 [2022-02-15 02:18:06,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:06,726 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2022-02-15 02:18:06,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 52 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 02:18:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2022-02-15 02:18:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 02:18:06,727 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:06,727 INFO L514 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:06,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-15 02:18:06,727 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -877750231, now seen corresponding path program 50 times [2022-02-15 02:18:06,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:06,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85614894] [2022-02-15 02:18:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:06,728 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:06,728 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:06,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:06,729 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:07,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:07,849 INFO 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 02:18:07,849 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:07,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85614894] [2022-02-15 02:18:07,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [85614894] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:07,849 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:07,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-15 02:18:07,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501949805] [2022-02-15 02:18:07,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:07,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-15 02:18:07,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:07,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-15 02:18:07,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=1532, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 02:18:07,851 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 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 02:18:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:09,683 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2022-02-15 02:18:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 02:18:09,684 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 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 02:18:09,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:09,684 INFO L225 Difference]: With dead ends: 71 [2022-02-15 02:18:09,684 INFO L226 Difference]: Without dead ends: 69 [2022-02-15 02:18:09,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4084, Invalid=6836, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 02:18:09,685 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:09,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-15 02:18:09,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2022-02-15 02:18:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 62 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-02-15 02:18:09,690 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 60 [2022-02-15 02:18:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:09,691 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-02-15 02:18:09,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 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 02:18:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-02-15 02:18:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 02:18:09,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:09,691 INFO L514 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:09,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-15 02:18:09,691 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:09,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:09,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1440450314, now seen corresponding path program 50 times [2022-02-15 02:18:09,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:09,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523736431] [2022-02-15 02:18:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:09,698 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:09,698 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:09,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:09,698 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:10,863 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:10,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523736431] [2022-02-15 02:18:10,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [523736431] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:10,863 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:10,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-15 02:18:10,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232134176] [2022-02-15 02:18:10,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:10,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-15 02:18:10,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:10,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-15 02:18:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 02:18:10,864 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 53 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:12,055 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2022-02-15 02:18:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 02:18:12,056 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 53 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-02-15 02:18:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:12,056 INFO L225 Difference]: With dead ends: 69 [2022-02-15 02:18:12,056 INFO L226 Difference]: Without dead ends: 65 [2022-02-15 02:18:12,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 02:18:12,057 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:12,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-15 02:18:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-02-15 02:18:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 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 02:18:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2022-02-15 02:18:12,064 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 61 [2022-02-15 02:18:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:12,065 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2022-02-15 02:18:12,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 53 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2022-02-15 02:18:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 02:18:12,065 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:12,065 INFO L514 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:12,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-15 02:18:12,065 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:12,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1440401495, now seen corresponding path program 51 times [2022-02-15 02:18:12,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:12,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671416841] [2022-02-15 02:18:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:12,067 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:12,067 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:12,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:12,068 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:13,254 INFO 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 02:18:13,254 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:13,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671416841] [2022-02-15 02:18:13,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [671416841] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:13,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:13,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-15 02:18:13,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616576877] [2022-02-15 02:18:13,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:13,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-15 02:18:13,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-15 02:18:13,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1382, Invalid=1588, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:18:13,256 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:15,179 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-02-15 02:18:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 02:18:15,180 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-02-15 02:18:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:15,180 INFO L225 Difference]: With dead ends: 72 [2022-02-15 02:18:15,180 INFO L226 Difference]: Without dead ends: 70 [2022-02-15 02:18:15,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4242, Invalid=7100, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 02:18:15,181 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:15,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-15 02:18:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2022-02-15 02:18:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 63 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 02:18:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2022-02-15 02:18:15,189 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61 [2022-02-15 02:18:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:15,190 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2022-02-15 02:18:15,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2022-02-15 02:18:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 02:18:15,192 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:15,192 INFO L514 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:15,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-15 02:18:15,192 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1702770314, now seen corresponding path program 51 times [2022-02-15 02:18:15,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:15,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474782404] [2022-02-15 02:18:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:15,194 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:15,194 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:15,195 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:16,417 INFO 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 02:18:16,417 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:16,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474782404] [2022-02-15 02:18:16,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1474782404] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:16,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:16,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-15 02:18:16,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581087523] [2022-02-15 02:18:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:16,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-15 02:18:16,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-15 02:18:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 02:18:16,418 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 55 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 54 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:17,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:17,648 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-02-15 02:18:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 02:18:17,649 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 54 states have internal predecessors, (59), 1 states have call successors, (2), 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 62 [2022-02-15 02:18:17,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:17,649 INFO L225 Difference]: With dead ends: 70 [2022-02-15 02:18:17,649 INFO L226 Difference]: Without dead ends: 66 [2022-02-15 02:18:17,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 02:18:17,650 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:17,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-02-15 02:18:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-02-15 02:18:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 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 02:18:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2022-02-15 02:18:17,658 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 62 [2022-02-15 02:18:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:17,658 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2022-02-15 02:18:17,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 54 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2022-02-15 02:18:17,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 02:18:17,659 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:17,659 INFO L514 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:17,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-15 02:18:17,659 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:17,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:17,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1702721495, now seen corresponding path program 52 times [2022-02-15 02:18:17,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:17,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452528556] [2022-02-15 02:18:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:17,660 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:17,661 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:17,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:17,661 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:18,855 INFO 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 02:18:18,855 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:18,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452528556] [2022-02-15 02:18:18,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1452528556] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:18,855 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:18,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-15 02:18:18,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671268504] [2022-02-15 02:18:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:18,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-15 02:18:18,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-15 02:18:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=1645, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 02:18:18,856 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:20,826 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-02-15 02:18:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 02:18:20,826 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 1 states have call successors, (2), 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 62 [2022-02-15 02:18:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:20,827 INFO L225 Difference]: With dead ends: 73 [2022-02-15 02:18:20,827 INFO L226 Difference]: Without dead ends: 71 [2022-02-15 02:18:20,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4403, Invalid=7369, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 02:18:20,827 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:20,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-15 02:18:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2022-02-15 02:18:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 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 02:18:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2022-02-15 02:18:20,835 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 62 [2022-02-15 02:18:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:20,835 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2022-02-15 02:18:20,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2022-02-15 02:18:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 02:18:20,836 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:20,836 INFO L514 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:20,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-15 02:18:20,836 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:20,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:20,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1244755722, now seen corresponding path program 52 times [2022-02-15 02:18:20,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:20,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727765612] [2022-02-15 02:18:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:20,837 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:20,837 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:20,838 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:22,094 INFO 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 02:18:22,095 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:22,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727765612] [2022-02-15 02:18:22,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1727765612] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:22,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:22,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-15 02:18:22,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819455340] [2022-02-15 02:18:22,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:22,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-15 02:18:22,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:22,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-15 02:18:22,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 02:18:22,096 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 56 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 55 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 02:18:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:23,355 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2022-02-15 02:18:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 02:18:23,356 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 55 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 02:18:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:23,356 INFO L225 Difference]: With dead ends: 71 [2022-02-15 02:18:23,356 INFO L226 Difference]: Without dead ends: 67 [2022-02-15 02:18:23,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 02:18:23,357 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:23,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-15 02:18:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-02-15 02:18:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.032258064516129) internal successors, (64), 63 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2022-02-15 02:18:23,365 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 63 [2022-02-15 02:18:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:23,365 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2022-02-15 02:18:23,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 55 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 02:18:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2022-02-15 02:18:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 02:18:23,365 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:23,365 INFO L514 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:23,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-02-15 02:18:23,366 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:23,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:23,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1244706903, now seen corresponding path program 53 times [2022-02-15 02:18:23,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:23,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903225900] [2022-02-15 02:18:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:23,367 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:23,367 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:23,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:23,368 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:24,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:24,618 INFO 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 02:18:24,618 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:24,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903225900] [2022-02-15 02:18:24,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [903225900] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:24,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:24,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-15 02:18:24,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528692492] [2022-02-15 02:18:24,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:24,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-15 02:18:24,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-15 02:18:24,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1489, Invalid=1703, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:18:24,620 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 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 02:18:26,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:26,648 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-02-15 02:18:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 02:18:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 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 02:18:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:26,649 INFO L225 Difference]: With dead ends: 74 [2022-02-15 02:18:26,649 INFO L226 Difference]: Without dead ends: 72 [2022-02-15 02:18:26,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4567, Invalid=7643, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 02:18:26,650 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:26,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-15 02:18:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2022-02-15 02:18:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 65 states have internal predecessors, (67), 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 02:18:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-02-15 02:18:26,657 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 63 [2022-02-15 02:18:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:26,657 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-02-15 02:18:26,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 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 02:18:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-02-15 02:18:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-15 02:18:26,657 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:26,657 INFO L514 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:26,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-02-15 02:18:26,657 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash 68794742, now seen corresponding path program 53 times [2022-02-15 02:18:26,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:26,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608404256] [2022-02-15 02:18:26,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:26,659 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:26,659 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:26,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:26,659 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:27,939 INFO 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 02:18:27,939 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:27,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608404256] [2022-02-15 02:18:27,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1608404256] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:27,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:27,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-15 02:18:27,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643473543] [2022-02-15 02:18:27,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:27,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-15 02:18:27,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-15 02:18:27,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 02:18:27,941 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 57 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 56 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:29,271 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-02-15 02:18:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 02:18:29,271 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 56 states have internal predecessors, (61), 1 states have call successors, (2), 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 64 [2022-02-15 02:18:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:29,271 INFO L225 Difference]: With dead ends: 72 [2022-02-15 02:18:29,271 INFO L226 Difference]: Without dead ends: 68 [2022-02-15 02:18:29,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 02:18:29,273 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:29,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-15 02:18:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-02-15 02:18:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 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 02:18:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2022-02-15 02:18:29,281 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 64 [2022-02-15 02:18:29,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:29,281 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2022-02-15 02:18:29,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 56 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2022-02-15 02:18:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-15 02:18:29,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:29,281 INFO L514 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:29,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-02-15 02:18:29,282 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash 68843561, now seen corresponding path program 54 times [2022-02-15 02:18:29,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:29,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227880573] [2022-02-15 02:18:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:29,283 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:29,283 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:29,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:29,284 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:30,570 INFO 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 02:18:30,570 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:30,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227880573] [2022-02-15 02:18:30,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1227880573] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:30,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:30,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-15 02:18:30,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712885951] [2022-02-15 02:18:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:30,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-15 02:18:30,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-15 02:18:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=1762, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 02:18:30,572 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:32,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:32,668 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-02-15 02:18:32,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 02:18:32,668 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 1 states have call successors, (2), 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 64 [2022-02-15 02:18:32,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:32,669 INFO L225 Difference]: With dead ends: 75 [2022-02-15 02:18:32,669 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 02:18:32,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4734, Invalid=7922, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 02:18:32,669 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:32,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:32,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 02:18:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2022-02-15 02:18:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 66 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 02:18:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-02-15 02:18:32,675 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 64 [2022-02-15 02:18:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:32,675 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-02-15 02:18:32,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-02-15 02:18:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 02:18:32,676 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:32,676 INFO L514 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:32,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-02-15 02:18:32,676 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2134153462, now seen corresponding path program 54 times [2022-02-15 02:18:32,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:32,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828592886] [2022-02-15 02:18:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:32,677 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:32,677 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:32,678 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:34,025 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:34,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828592886] [2022-02-15 02:18:34,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1828592886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:34,026 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:34,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-15 02:18:34,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352081404] [2022-02-15 02:18:34,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:34,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-15 02:18:34,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:34,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-15 02:18:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 02:18:34,027 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 58 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 57 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 02:18:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:35,381 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-02-15 02:18:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 02:18:35,382 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 57 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 02:18:35,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:35,382 INFO L225 Difference]: With dead ends: 73 [2022-02-15 02:18:35,382 INFO L226 Difference]: Without dead ends: 69 [2022-02-15 02:18:35,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 02:18:35,383 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:35,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:35,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-15 02:18:35,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-02-15 02:18:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.03125) internal successors, (66), 65 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 02:18:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2022-02-15 02:18:35,392 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 65 [2022-02-15 02:18:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:35,392 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2022-02-15 02:18:35,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 57 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 02:18:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2022-02-15 02:18:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 02:18:35,392 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:35,392 INFO L514 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:35,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-02-15 02:18:35,393 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:35,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2134202281, now seen corresponding path program 55 times [2022-02-15 02:18:35,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:35,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245826134] [2022-02-15 02:18:35,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:35,394 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:35,394 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:35,395 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:36,724 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:36,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245826134] [2022-02-15 02:18:36,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245826134] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:36,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:36,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-15 02:18:36,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192689991] [2022-02-15 02:18:36,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:36,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-15 02:18:36,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-15 02:18:36,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1600, Invalid=1822, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:18:36,726 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 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 02:18:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:38,881 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-02-15 02:18:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 02:18:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 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 02:18:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:38,881 INFO L225 Difference]: With dead ends: 76 [2022-02-15 02:18:38,881 INFO L226 Difference]: Without dead ends: 74 [2022-02-15 02:18:38,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4904, Invalid=8206, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 02:18:38,882 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:38,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:38,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-15 02:18:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-02-15 02:18:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 67 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-02-15 02:18:38,888 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 65 [2022-02-15 02:18:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:38,888 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-02-15 02:18:38,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 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 02:18:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-02-15 02:18:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 02:18:38,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:38,888 INFO L514 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:38,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-02-15 02:18:38,889 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:38,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1735764342, now seen corresponding path program 55 times [2022-02-15 02:18:38,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:38,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155008586] [2022-02-15 02:18:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:38,890 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:38,890 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:38,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:38,891 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:40,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:40,270 INFO 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 02:18:40,270 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:40,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155008586] [2022-02-15 02:18:40,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [155008586] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:40,270 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:40,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-15 02:18:40,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954639767] [2022-02-15 02:18:40,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:40,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-15 02:18:40,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-15 02:18:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 02:18:40,271 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 59 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 58 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:41,671 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-02-15 02:18:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 02:18:41,671 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 58 states have internal predecessors, (63), 1 states have call successors, (2), 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 66 [2022-02-15 02:18:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:41,672 INFO L225 Difference]: With dead ends: 74 [2022-02-15 02:18:41,672 INFO L226 Difference]: Without dead ends: 70 [2022-02-15 02:18:41,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 02:18:41,672 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:41,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-15 02:18:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-02-15 02:18:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 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 02:18:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2022-02-15 02:18:41,677 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 66 [2022-02-15 02:18:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:41,678 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2022-02-15 02:18:41,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 58 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2022-02-15 02:18:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 02:18:41,678 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:41,678 INFO L514 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:41,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-02-15 02:18:41,678 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1735813161, now seen corresponding path program 56 times [2022-02-15 02:18:41,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:41,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417473651] [2022-02-15 02:18:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:41,679 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:41,679 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:41,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:41,680 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:43,054 INFO 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 02:18:43,054 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:43,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417473651] [2022-02-15 02:18:43,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1417473651] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:43,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:43,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-15 02:18:43,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852739298] [2022-02-15 02:18:43,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:43,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-15 02:18:43,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-15 02:18:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=1883, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 02:18:43,056 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:45,272 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2022-02-15 02:18:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 02:18:45,272 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 1 states have call successors, (2), 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 66 [2022-02-15 02:18:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:45,273 INFO L225 Difference]: With dead ends: 77 [2022-02-15 02:18:45,273 INFO L226 Difference]: Without dead ends: 75 [2022-02-15 02:18:45,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1706 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5077, Invalid=8495, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 02:18:45,274 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:45,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-15 02:18:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-02-15 02:18:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.044776119402985) internal successors, (70), 68 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 02:18:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-02-15 02:18:45,280 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 66 [2022-02-15 02:18:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:45,281 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-02-15 02:18:45,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-02-15 02:18:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 02:18:45,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:45,281 INFO L514 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:45,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-02-15 02:18:45,281 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2024363786, now seen corresponding path program 56 times [2022-02-15 02:18:45,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:45,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142364672] [2022-02-15 02:18:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:45,282 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:45,282 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:45,283 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:46,684 INFO 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 02:18:46,684 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:46,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142364672] [2022-02-15 02:18:46,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2142364672] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:46,684 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:46,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-15 02:18:46,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269877764] [2022-02-15 02:18:46,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:46,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-15 02:18:46,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-15 02:18:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 02:18:46,685 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 60 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 59 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 02:18:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:48,136 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-02-15 02:18:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 02:18:48,136 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 59 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 02:18:48,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:48,137 INFO L225 Difference]: With dead ends: 75 [2022-02-15 02:18:48,137 INFO L226 Difference]: Without dead ends: 71 [2022-02-15 02:18:48,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 02:18:48,138 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:48,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-15 02:18:48,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-02-15 02:18:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 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 02:18:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2022-02-15 02:18:48,153 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 67 [2022-02-15 02:18:48,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:48,153 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2022-02-15 02:18:48,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 59 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 02:18:48,153 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2022-02-15 02:18:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 02:18:48,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:48,154 INFO L514 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:48,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-02-15 02:18:48,154 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:48,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:48,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2024314967, now seen corresponding path program 57 times [2022-02-15 02:18:48,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:48,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717157827] [2022-02-15 02:18:48,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:48,155 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:48,155 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:48,156 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:49,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:49,555 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 02:18:49,555 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:49,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717157827] [2022-02-15 02:18:49,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [717157827] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:49,555 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:49,555 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-15 02:18:49,555 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070841619] [2022-02-15 02:18:49,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:49,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-15 02:18:49,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:49,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-15 02:18:49,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1715, Invalid=1945, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:18:49,556 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 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 02:18:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:51,838 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2022-02-15 02:18:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 02:18:51,839 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 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 02:18:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:51,839 INFO L225 Difference]: With dead ends: 78 [2022-02-15 02:18:51,839 INFO L226 Difference]: Without dead ends: 76 [2022-02-15 02:18:51,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5253, Invalid=8789, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 02:18:51,840 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:51,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-15 02:18:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2022-02-15 02:18:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 69 states have internal predecessors, (71), 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 02:18:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-02-15 02:18:51,845 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 67 [2022-02-15 02:18:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:51,845 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-02-15 02:18:51,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 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 02:18:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-02-15 02:18:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-15 02:18:51,846 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:51,846 INFO L514 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:51,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-02-15 02:18:51,846 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1670748534, now seen corresponding path program 57 times [2022-02-15 02:18:51,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:51,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630898618] [2022-02-15 02:18:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:51,847 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:51,847 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:51,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:51,847 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:53,289 INFO 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 02:18:53,289 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:53,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630898618] [2022-02-15 02:18:53,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1630898618] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:53,289 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:53,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-15 02:18:53,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796834453] [2022-02-15 02:18:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:53,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-15 02:18:53,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-15 02:18:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 02:18:53,290 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 61 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 60 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:54,789 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-02-15 02:18:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 02:18:54,790 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 60 states have internal predecessors, (65), 1 states have call successors, (2), 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 68 [2022-02-15 02:18:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:54,790 INFO L225 Difference]: With dead ends: 76 [2022-02-15 02:18:54,790 INFO L226 Difference]: Without dead ends: 72 [2022-02-15 02:18:54,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 02:18:54,791 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:54,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-15 02:18:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-02-15 02:18:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-02-15 02:18:54,796 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 68 [2022-02-15 02:18:54,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:54,796 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-02-15 02:18:54,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 60 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-02-15 02:18:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-15 02:18:54,797 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:54,797 INFO L514 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:54,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-02-15 02:18:54,797 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1670797353, now seen corresponding path program 58 times [2022-02-15 02:18:54,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:54,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141295536] [2022-02-15 02:18:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:54,798 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:54,798 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:54,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:54,798 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:18:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:18:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:18:56,258 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:18:56,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141295536] [2022-02-15 02:18:56,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1141295536] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:18:56,258 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:18:56,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-15 02:18:56,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326955366] [2022-02-15 02:18:56,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:18:56,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-15 02:18:56,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:18:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-15 02:18:56,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=2008, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 02:18:56,259 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:18:58,612 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2022-02-15 02:18:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 02:18:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 1 states have call successors, (2), 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 68 [2022-02-15 02:18:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:18:58,613 INFO L225 Difference]: With dead ends: 79 [2022-02-15 02:18:58,613 INFO L226 Difference]: Without dead ends: 77 [2022-02-15 02:18:58,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1825 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5432, Invalid=9088, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 02:18:58,614 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:18:58,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:18:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-15 02:18:58,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2022-02-15 02:18:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 70 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 02:18:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-02-15 02:18:58,620 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 68 [2022-02-15 02:18:58,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:18:58,620 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-02-15 02:18:58,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:18:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-02-15 02:18:58,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 02:18:58,620 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:18:58,620 INFO L514 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:18:58,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-02-15 02:18:58,620 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:18:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:18:58,620 INFO L85 PathProgramCache]: Analyzing trace with hash 255113462, now seen corresponding path program 58 times [2022-02-15 02:18:58,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:18:58,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980504592] [2022-02-15 02:18:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:18:58,621 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:18:58,621 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:18:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:18:58,622 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:18:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:00,103 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 02:19:00,103 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:00,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980504592] [2022-02-15 02:19:00,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [980504592] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:00,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:00,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-15 02:19:00,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291411289] [2022-02-15 02:19:00,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:00,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-15 02:19:00,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-15 02:19:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-02-15 02:19:00,104 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 62 states, 62 states have (on average 1.064516129032258) internal successors, (66), 61 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 02:19:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:01,639 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2022-02-15 02:19:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 02:19:01,639 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.064516129032258) internal successors, (66), 61 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 02:19:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:01,639 INFO L225 Difference]: With dead ends: 77 [2022-02-15 02:19:01,639 INFO L226 Difference]: Without dead ends: 73 [2022-02-15 02:19:01,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 02:19:01,640 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:01,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-15 02:19:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-02-15 02:19:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 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 02:19:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2022-02-15 02:19:01,647 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 69 [2022-02-15 02:19:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:01,647 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2022-02-15 02:19:01,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.064516129032258) internal successors, (66), 61 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 02:19:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2022-02-15 02:19:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 02:19:01,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:01,650 INFO L514 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:01,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-02-15 02:19:01,650 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash 255162281, now seen corresponding path program 59 times [2022-02-15 02:19:01,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:01,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576693937] [2022-02-15 02:19:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:01,651 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:01,651 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:01,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:01,652 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:03,169 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:03,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576693937] [2022-02-15 02:19:03,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [576693937] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:03,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:03,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-15 02:19:03,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997789922] [2022-02-15 02:19:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:03,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-15 02:19:03,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-15 02:19:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1834, Invalid=2072, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:19:03,171 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 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 02:19:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:05,605 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-02-15 02:19:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 02:19:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 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 02:19:05,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:05,606 INFO L225 Difference]: With dead ends: 80 [2022-02-15 02:19:05,606 INFO L226 Difference]: Without dead ends: 78 [2022-02-15 02:19:05,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5614, Invalid=9392, Unknown=0, NotChecked=0, Total=15006 [2022-02-15 02:19:05,607 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:05,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-15 02:19:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-02-15 02:19:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 71 states have internal predecessors, (73), 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 02:19:05,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2022-02-15 02:19:05,616 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 69 [2022-02-15 02:19:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:05,616 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2022-02-15 02:19:05,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 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 02:19:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2022-02-15 02:19:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 02:19:05,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:05,616 INFO L514 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:05,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-02-15 02:19:05,616 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:05,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash -679900810, now seen corresponding path program 59 times [2022-02-15 02:19:05,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:05,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862518410] [2022-02-15 02:19:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:05,618 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:05,618 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:05,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:05,618 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:07,163 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 02:19:07,163 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:07,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862518410] [2022-02-15 02:19:07,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [862518410] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:07,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:07,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-15 02:19:07,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268377016] [2022-02-15 02:19:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:07,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-15 02:19:07,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-15 02:19:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 02:19:07,165 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 63 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 62 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:08,733 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2022-02-15 02:19:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 02:19:08,734 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 62 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-02-15 02:19:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:08,734 INFO L225 Difference]: With dead ends: 78 [2022-02-15 02:19:08,734 INFO L226 Difference]: Without dead ends: 74 [2022-02-15 02:19:08,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-02-15 02:19:08,735 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:08,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-15 02:19:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-02-15 02:19:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 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 02:19:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2022-02-15 02:19:08,746 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 70 [2022-02-15 02:19:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:08,747 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2022-02-15 02:19:08,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 62 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2022-02-15 02:19:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 02:19:08,747 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:08,747 INFO L514 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:08,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-02-15 02:19:08,747 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:08,748 INFO L85 PathProgramCache]: Analyzing trace with hash -679851991, now seen corresponding path program 60 times [2022-02-15 02:19:08,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:08,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863204116] [2022-02-15 02:19:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:08,749 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:08,749 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:08,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:08,749 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:10,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:10,275 INFO 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 02:19:10,275 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:10,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863204116] [2022-02-15 02:19:10,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [863204116] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:10,276 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:10,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-15 02:19:10,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406058452] [2022-02-15 02:19:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:10,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-15 02:19:10,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-15 02:19:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=2137, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 02:19:10,277 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:12,746 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2022-02-15 02:19:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 02:19:12,747 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-02-15 02:19:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:12,747 INFO L225 Difference]: With dead ends: 81 [2022-02-15 02:19:12,747 INFO L226 Difference]: Without dead ends: 79 [2022-02-15 02:19:12,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1948 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5799, Invalid=9701, Unknown=0, NotChecked=0, Total=15500 [2022-02-15 02:19:12,748 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:12,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:12,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-15 02:19:12,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2022-02-15 02:19:12,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 72 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:12,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-02-15 02:19:12,754 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 70 [2022-02-15 02:19:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:12,754 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-02-15 02:19:12,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.046875) internal successors, (67), 63 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-02-15 02:19:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 02:19:12,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:12,754 INFO L514 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:12,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-02-15 02:19:12,755 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 399427830, now seen corresponding path program 60 times [2022-02-15 02:19:12,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:12,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679551544] [2022-02-15 02:19:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:12,756 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:12,756 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:12,756 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:14,333 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:14,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679551544] [2022-02-15 02:19:14,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [679551544] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:14,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:14,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-15 02:19:14,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418457545] [2022-02-15 02:19:14,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:14,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-15 02:19:14,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:14,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-15 02:19:14,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 02:19:14,334 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 64 states, 64 states have (on average 1.0625) internal successors, (68), 63 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 02:19:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:15,950 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2022-02-15 02:19:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 02:19:15,951 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.0625) internal successors, (68), 63 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 02:19:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:15,951 INFO L225 Difference]: With dead ends: 79 [2022-02-15 02:19:15,951 INFO L226 Difference]: Without dead ends: 75 [2022-02-15 02:19:15,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2022-02-15 02:19:15,952 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:15,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-15 02:19:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-02-15 02:19:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 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 02:19:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2022-02-15 02:19:15,958 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 71 [2022-02-15 02:19:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:15,958 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2022-02-15 02:19:15,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.0625) internal successors, (68), 63 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 02:19:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2022-02-15 02:19:15,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 02:19:15,958 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:15,958 INFO L514 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:15,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-02-15 02:19:15,958 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 399476649, now seen corresponding path program 61 times [2022-02-15 02:19:15,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:15,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355849743] [2022-02-15 02:19:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:15,960 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:15,960 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:15,960 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:17,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:17,524 INFO 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 02:19:17,524 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:17,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355849743] [2022-02-15 02:19:17,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [355849743] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:17,524 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:17,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-15 02:19:17,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352102977] [2022-02-15 02:19:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:17,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-15 02:19:17,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-15 02:19:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1957, Invalid=2203, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:19:17,525 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 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 02:19:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:20,097 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2022-02-15 02:19:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 02:19:20,097 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 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 02:19:20,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:20,098 INFO L225 Difference]: With dead ends: 82 [2022-02-15 02:19:20,098 INFO L226 Difference]: Without dead ends: 80 [2022-02-15 02:19:20,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5987, Invalid=10015, Unknown=0, NotChecked=0, Total=16002 [2022-02-15 02:19:20,099 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:20,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-15 02:19:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2022-02-15 02:19:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 73 states have internal predecessors, (75), 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 02:19:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2022-02-15 02:19:20,105 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 71 [2022-02-15 02:19:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:20,105 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2022-02-15 02:19:20,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 64 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 02:19:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2022-02-15 02:19:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-15 02:19:20,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:20,106 INFO L514 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:20,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-02-15 02:19:20,106 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash -501122698, now seen corresponding path program 61 times [2022-02-15 02:19:20,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:20,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700617147] [2022-02-15 02:19:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:20,107 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:20,107 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:20,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:20,107 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:21,776 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:21,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700617147] [2022-02-15 02:19:21,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [700617147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:21,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:21,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-15 02:19:21,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628271071] [2022-02-15 02:19:21,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:21,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-15 02:19:21,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-15 02:19:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 02:19:21,778 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 65 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 64 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:23,447 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-02-15 02:19:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 02:19:23,448 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 64 states have internal predecessors, (69), 1 states have call successors, (2), 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 72 [2022-02-15 02:19:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:23,448 INFO L225 Difference]: With dead ends: 80 [2022-02-15 02:19:23,448 INFO L226 Difference]: Without dead ends: 76 [2022-02-15 02:19:23,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2022-02-15 02:19:23,449 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:23,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:23,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-15 02:19:23,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-02-15 02:19:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 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 02:19:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2022-02-15 02:19:23,455 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 72 [2022-02-15 02:19:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:23,455 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2022-02-15 02:19:23,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 64 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2022-02-15 02:19:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-15 02:19:23,455 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:23,455 INFO L514 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:23,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-02-15 02:19:23,456 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:23,456 INFO L85 PathProgramCache]: Analyzing trace with hash -501073879, now seen corresponding path program 62 times [2022-02-15 02:19:23,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:23,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909535574] [2022-02-15 02:19:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:23,457 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:23,457 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:23,458 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:25,070 INFO 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 02:19:25,070 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:25,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909535574] [2022-02-15 02:19:25,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1909535574] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:25,070 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:25,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-15 02:19:25,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124923630] [2022-02-15 02:19:25,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:25,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-15 02:19:25,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:25,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-15 02:19:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=2270, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 02:19:25,072 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:27,696 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2022-02-15 02:19:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 02:19:27,699 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 1 states have call successors, (2), 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 72 [2022-02-15 02:19:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:27,700 INFO L225 Difference]: With dead ends: 83 [2022-02-15 02:19:27,700 INFO L226 Difference]: Without dead ends: 81 [2022-02-15 02:19:27,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6178, Invalid=10334, Unknown=0, NotChecked=0, Total=16512 [2022-02-15 02:19:27,701 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:27,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:27,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-15 02:19:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2022-02-15 02:19:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 74 states have internal predecessors, (76), 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 02:19:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2022-02-15 02:19:27,710 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 72 [2022-02-15 02:19:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:27,710 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2022-02-15 02:19:27,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:27,710 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2022-02-15 02:19:27,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 02:19:27,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:27,711 INFO L514 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:27,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-02-15 02:19:27,711 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:27,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1646582006, now seen corresponding path program 62 times [2022-02-15 02:19:27,711 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:27,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031986183] [2022-02-15 02:19:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:27,712 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:27,713 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:27,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:27,713 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:29,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:29,429 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:29,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031986183] [2022-02-15 02:19:29,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1031986183] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:29,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:29,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-15 02:19:29,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628495335] [2022-02-15 02:19:29,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:29,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-15 02:19:29,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:29,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-15 02:19:29,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 02:19:29,431 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 66 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 65 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 02:19:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:31,145 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2022-02-15 02:19:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 02:19:31,146 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 65 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 02:19:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:31,146 INFO L225 Difference]: With dead ends: 81 [2022-02-15 02:19:31,146 INFO L226 Difference]: Without dead ends: 77 [2022-02-15 02:19:31,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2022-02-15 02:19:31,147 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:31,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 59 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:31,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-15 02:19:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-02-15 02:19:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 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 02:19:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-02-15 02:19:31,153 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 73 [2022-02-15 02:19:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:31,153 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-02-15 02:19:31,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 65 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 02:19:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-02-15 02:19:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 02:19:31,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:31,154 INFO L514 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:31,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-02-15 02:19:31,154 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:31,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1646630825, now seen corresponding path program 63 times [2022-02-15 02:19:31,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:31,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638425395] [2022-02-15 02:19:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:31,155 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:31,155 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:31,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:31,156 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:32,815 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:32,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638425395] [2022-02-15 02:19:32,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [638425395] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:32,815 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:32,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-15 02:19:32,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575679570] [2022-02-15 02:19:32,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:32,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-15 02:19:32,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:32,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-15 02:19:32,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2084, Invalid=2338, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:19:32,817 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 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 02:19:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:35,530 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-02-15 02:19:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-15 02:19:35,531 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 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 02:19:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:35,531 INFO L225 Difference]: With dead ends: 84 [2022-02-15 02:19:35,531 INFO L226 Difference]: Without dead ends: 82 [2022-02-15 02:19:35,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6372, Invalid=10658, Unknown=0, NotChecked=0, Total=17030 [2022-02-15 02:19:35,532 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:35,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-02-15 02:19:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2022-02-15 02:19:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 75 states have internal predecessors, (77), 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 02:19:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2022-02-15 02:19:35,538 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 73 [2022-02-15 02:19:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:35,539 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2022-02-15 02:19:35,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.044776119402985) internal successors, (70), 66 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 02:19:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2022-02-15 02:19:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 02:19:35,539 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:35,539 INFO L514 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:35,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-02-15 02:19:35,539 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:35,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:35,539 INFO L85 PathProgramCache]: Analyzing trace with hash -494048906, now seen corresponding path program 63 times [2022-02-15 02:19:35,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:35,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677544511] [2022-02-15 02:19:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:35,540 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:35,540 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:35,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:35,542 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:37,269 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:37,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677544511] [2022-02-15 02:19:37,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1677544511] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:37,269 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:37,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-15 02:19:37,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070696952] [2022-02-15 02:19:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:37,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-15 02:19:37,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:37,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-15 02:19:37,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 02:19:37,270 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 67 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 66 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:39,020 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2022-02-15 02:19:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-15 02:19:39,020 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 66 states have internal predecessors, (71), 1 states have call successors, (2), 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 74 [2022-02-15 02:19:39,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:39,020 INFO L225 Difference]: With dead ends: 82 [2022-02-15 02:19:39,021 INFO L226 Difference]: Without dead ends: 78 [2022-02-15 02:19:39,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2022-02-15 02:19:39,022 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:39,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-15 02:19:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-02-15 02:19:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 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 02:19:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2022-02-15 02:19:39,027 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 74 [2022-02-15 02:19:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:39,028 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2022-02-15 02:19:39,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 66 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2022-02-15 02:19:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 02:19:39,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:39,028 INFO L514 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:39,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-02-15 02:19:39,028 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash -494000087, now seen corresponding path program 64 times [2022-02-15 02:19:39,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:39,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522667604] [2022-02-15 02:19:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:39,030 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:39,030 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:39,031 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:40,748 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:40,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522667604] [2022-02-15 02:19:40,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [522667604] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:40,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:40,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-15 02:19:40,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011865668] [2022-02-15 02:19:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:40,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-15 02:19:40,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-15 02:19:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=2407, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 02:19:40,750 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:43,510 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2022-02-15 02:19:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 02:19:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 1 states have call successors, (2), 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 74 [2022-02-15 02:19:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:43,511 INFO L225 Difference]: With dead ends: 85 [2022-02-15 02:19:43,511 INFO L226 Difference]: Without dead ends: 83 [2022-02-15 02:19:43,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2206 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6569, Invalid=10987, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 02:19:43,512 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:43,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-02-15 02:19:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2022-02-15 02:19:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.04) internal successors, (78), 76 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 02:19:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-02-15 02:19:43,522 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 74 [2022-02-15 02:19:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:43,522 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-02-15 02:19:43,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 67 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-02-15 02:19:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 02:19:43,522 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:43,523 INFO L514 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:43,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-02-15 02:19:43,523 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1865869558, now seen corresponding path program 64 times [2022-02-15 02:19:43,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:43,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500190506] [2022-02-15 02:19:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:43,524 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:43,524 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:43,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:43,525 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:45,272 INFO 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 02:19:45,272 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:45,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500190506] [2022-02-15 02:19:45,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1500190506] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:45,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:45,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-15 02:19:45,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831543926] [2022-02-15 02:19:45,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:45,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-15 02:19:45,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:45,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-15 02:19:45,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 02:19:45,274 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 68 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 67 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 02:19:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:47,071 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2022-02-15 02:19:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 02:19:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 67 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 02:19:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:47,072 INFO L225 Difference]: With dead ends: 83 [2022-02-15 02:19:47,072 INFO L226 Difference]: Without dead ends: 79 [2022-02-15 02:19:47,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 02:19:47,073 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:47,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:47,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-15 02:19:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-02-15 02:19:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.027027027027027) internal successors, (76), 75 states have internal predecessors, (76), 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 02:19:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2022-02-15 02:19:47,079 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 75 [2022-02-15 02:19:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:47,079 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2022-02-15 02:19:47,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 67 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 02:19:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2022-02-15 02:19:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 02:19:47,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:47,080 INFO L514 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:47,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-02-15 02:19:47,080 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1865918377, now seen corresponding path program 65 times [2022-02-15 02:19:47,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:47,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178965] [2022-02-15 02:19:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:47,081 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:47,081 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:47,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:47,082 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:48,894 INFO 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 02:19:48,894 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:48,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178965] [2022-02-15 02:19:48,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [178965] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:48,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:48,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-15 02:19:48,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159377273] [2022-02-15 02:19:48,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:48,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-15 02:19:48,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-15 02:19:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2215, Invalid=2477, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:19:48,895 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 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 02:19:51,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:51,752 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-02-15 02:19:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 02:19:51,752 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 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 02:19:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:51,752 INFO L225 Difference]: With dead ends: 86 [2022-02-15 02:19:51,752 INFO L226 Difference]: Without dead ends: 84 [2022-02-15 02:19:51,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6769, Invalid=11321, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 02:19:51,753 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:51,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-15 02:19:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2022-02-15 02:19:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 77 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-02-15 02:19:51,760 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 75 [2022-02-15 02:19:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:51,761 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-02-15 02:19:51,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 68 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 02:19:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-02-15 02:19:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 02:19:51,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:51,761 INFO L514 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:51,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-02-15 02:19:51,761 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2008897910, now seen corresponding path program 65 times [2022-02-15 02:19:51,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:51,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320233934] [2022-02-15 02:19:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:51,762 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:51,763 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:51,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:51,763 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:53,736 INFO 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 02:19:53,736 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:53,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320233934] [2022-02-15 02:19:53,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [320233934] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:53,736 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:53,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-15 02:19:53,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416768173] [2022-02-15 02:19:53,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:53,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-15 02:19:53,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:53,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-15 02:19:53,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 02:19:53,737 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 69 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 68 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:19:55,597 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-02-15 02:19:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 02:19:55,598 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 68 states have internal predecessors, (73), 1 states have call successors, (2), 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 76 [2022-02-15 02:19:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:19:55,598 INFO L225 Difference]: With dead ends: 84 [2022-02-15 02:19:55,598 INFO L226 Difference]: Without dead ends: 80 [2022-02-15 02:19:55,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 02:19:55,599 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:19:55,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:19:55,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-15 02:19:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-02-15 02:19:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 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 02:19:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2022-02-15 02:19:55,605 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 76 [2022-02-15 02:19:55,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:19:55,605 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2022-02-15 02:19:55,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 68 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:19:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2022-02-15 02:19:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 02:19:55,606 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:19:55,606 INFO L514 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:19:55,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-02-15 02:19:55,606 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:19:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:19:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2008946729, now seen corresponding path program 66 times [2022-02-15 02:19:55,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:19:55,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405919869] [2022-02-15 02:19:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:19:55,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:19:55,607 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:19:55,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:19:55,607 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:19:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:19:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:19:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:19:57,429 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:19:57,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405919869] [2022-02-15 02:19:57,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [405919869] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:19:57,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:19:57,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-15 02:19:57,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500041548] [2022-02-15 02:19:57,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:19:57,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-15 02:19:57,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:19:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-15 02:19:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=2548, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 02:19:57,431 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:00,343 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2022-02-15 02:20:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-15 02:20:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 1 states have call successors, (2), 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 76 [2022-02-15 02:20:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:00,343 INFO L225 Difference]: With dead ends: 87 [2022-02-15 02:20:00,343 INFO L226 Difference]: Without dead ends: 85 [2022-02-15 02:20:00,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6972, Invalid=11660, Unknown=0, NotChecked=0, Total=18632 [2022-02-15 02:20:00,345 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:00,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 23 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-15 02:20:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2022-02-15 02:20:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 78 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 02:20:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2022-02-15 02:20:00,351 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76 [2022-02-15 02:20:00,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:00,351 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2022-02-15 02:20:00,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2022-02-15 02:20:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 02:20:00,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:00,351 INFO L514 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:00,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-02-15 02:20:00,351 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:00,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:00,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2147157770, now seen corresponding path program 66 times [2022-02-15 02:20:00,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:00,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912607654] [2022-02-15 02:20:00,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:00,352 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:00,352 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:00,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:00,353 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:02,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:02,216 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 02:20:02,216 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:02,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912607654] [2022-02-15 02:20:02,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1912607654] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:02,216 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:02,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-15 02:20:02,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671382546] [2022-02-15 02:20:02,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:02,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-15 02:20:02,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-15 02:20:02,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 02:20:02,218 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 70 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 69 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:04,132 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2022-02-15 02:20:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-15 02:20:04,133 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 69 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-02-15 02:20:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:04,133 INFO L225 Difference]: With dead ends: 85 [2022-02-15 02:20:04,133 INFO L226 Difference]: Without dead ends: 81 [2022-02-15 02:20:04,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2022-02-15 02:20:04,134 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:04,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:04,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-15 02:20:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-02-15 02:20:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 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 02:20:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2022-02-15 02:20:04,140 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 77 [2022-02-15 02:20:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:04,141 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2022-02-15 02:20:04,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 69 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2022-02-15 02:20:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 02:20:04,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:04,141 INFO L514 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:04,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-02-15 02:20:04,141 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2147108951, now seen corresponding path program 67 times [2022-02-15 02:20:04,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:04,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827070425] [2022-02-15 02:20:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:04,142 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:04,142 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:04,143 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:06,007 INFO 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 02:20:06,007 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:06,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827070425] [2022-02-15 02:20:06,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1827070425] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:06,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:06,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-15 02:20:06,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825333692] [2022-02-15 02:20:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:06,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-15 02:20:06,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:06,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-15 02:20:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2350, Invalid=2620, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:20:06,009 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:08,985 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-02-15 02:20:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-15 02:20:08,985 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-02-15 02:20:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:08,986 INFO L225 Difference]: With dead ends: 88 [2022-02-15 02:20:08,986 INFO L226 Difference]: Without dead ends: 86 [2022-02-15 02:20:08,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7178, Invalid=12004, Unknown=0, NotChecked=0, Total=19182 [2022-02-15 02:20:08,987 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:08,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-15 02:20:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2022-02-15 02:20:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 79 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 02:20:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2022-02-15 02:20:08,993 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 77 [2022-02-15 02:20:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:08,993 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2022-02-15 02:20:08,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 70 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2022-02-15 02:20:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 02:20:08,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:08,993 INFO L514 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:08,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-02-15 02:20:08,993 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:08,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2135864970, now seen corresponding path program 67 times [2022-02-15 02:20:08,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:08,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176101755] [2022-02-15 02:20:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:08,994 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:08,994 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:08,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:08,995 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:10,902 INFO 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 02:20:10,903 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:10,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176101755] [2022-02-15 02:20:10,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [176101755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:10,903 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:10,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-15 02:20:10,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671993659] [2022-02-15 02:20:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:10,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-15 02:20:10,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-15 02:20:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 02:20:10,904 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 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 02:20:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:12,862 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-02-15 02:20:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-15 02:20:12,862 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 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 02:20:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:12,863 INFO L225 Difference]: With dead ends: 86 [2022-02-15 02:20:12,863 INFO L226 Difference]: Without dead ends: 82 [2022-02-15 02:20:12,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-02-15 02:20:12,864 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:12,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-02-15 02:20:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-02-15 02:20:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2022-02-15 02:20:12,870 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 78 [2022-02-15 02:20:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:12,870 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2022-02-15 02:20:12,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 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 02:20:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2022-02-15 02:20:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 02:20:12,871 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:12,871 INFO L514 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:12,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-02-15 02:20:12,871 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2135816151, now seen corresponding path program 68 times [2022-02-15 02:20:12,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:12,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80555038] [2022-02-15 02:20:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:12,872 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:12,872 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:12,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:12,873 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:14,791 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 02:20:14,791 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:14,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80555038] [2022-02-15 02:20:14,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [80555038] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:14,791 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:14,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-15 02:20:14,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055750064] [2022-02-15 02:20:14,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:14,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-15 02:20:14,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:14,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-15 02:20:14,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=2693, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 02:20:14,792 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 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 02:20:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:17,853 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-02-15 02:20:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 02:20:17,853 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 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 02:20:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:17,853 INFO L225 Difference]: With dead ends: 89 [2022-02-15 02:20:17,853 INFO L226 Difference]: Without dead ends: 87 [2022-02-15 02:20:17,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7387, Invalid=12353, Unknown=0, NotChecked=0, Total=19740 [2022-02-15 02:20:17,854 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:17,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:17,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-15 02:20:17,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2022-02-15 02:20:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 80 states have internal predecessors, (82), 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 02:20:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-02-15 02:20:17,861 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2022-02-15 02:20:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:17,861 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-02-15 02:20:17,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 71 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 02:20:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-02-15 02:20:17,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 02:20:17,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:17,861 INFO L514 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:17,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-02-15 02:20:17,861 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:17,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:17,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1785788170, now seen corresponding path program 68 times [2022-02-15 02:20:17,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:17,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712815627] [2022-02-15 02:20:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:17,862 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:17,862 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:17,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:17,863 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:19,830 INFO 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 02:20:19,830 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:19,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712815627] [2022-02-15 02:20:19,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1712815627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:19,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:19,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-15 02:20:19,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164921876] [2022-02-15 02:20:19,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:19,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-15 02:20:19,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:19,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-15 02:20:19,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 02:20:19,831 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 72 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 71 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:21,845 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2022-02-15 02:20:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 02:20:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 71 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-02-15 02:20:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:21,845 INFO L225 Difference]: With dead ends: 87 [2022-02-15 02:20:21,845 INFO L226 Difference]: Without dead ends: 83 [2022-02-15 02:20:21,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2022-02-15 02:20:21,847 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:21,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-02-15 02:20:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-02-15 02:20:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 79 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 02:20:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2022-02-15 02:20:21,856 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 79 [2022-02-15 02:20:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:21,856 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2022-02-15 02:20:21,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 71 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2022-02-15 02:20:21,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 02:20:21,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:21,857 INFO L514 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:21,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-02-15 02:20:21,857 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:21,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1785739351, now seen corresponding path program 69 times [2022-02-15 02:20:21,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:21,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685179345] [2022-02-15 02:20:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:21,859 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:21,859 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:21,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:21,859 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:23,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:23,863 INFO 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 02:20:23,863 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:23,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685179345] [2022-02-15 02:20:23,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1685179345] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:23,863 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:23,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-15 02:20:23,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541727103] [2022-02-15 02:20:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:23,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-15 02:20:23,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:23,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-15 02:20:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2489, Invalid=2767, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:20:23,865 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:27,027 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-02-15 02:20:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 02:20:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-02-15 02:20:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:27,028 INFO L225 Difference]: With dead ends: 90 [2022-02-15 02:20:27,028 INFO L226 Difference]: Without dead ends: 88 [2022-02-15 02:20:27,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=7599, Invalid=12707, Unknown=0, NotChecked=0, Total=20306 [2022-02-15 02:20:27,029 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:27,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:27,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-02-15 02:20:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2022-02-15 02:20:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0375) internal successors, (83), 81 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 02:20:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-02-15 02:20:27,035 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 79 [2022-02-15 02:20:27,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:27,036 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-02-15 02:20:27,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 72 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-02-15 02:20:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 02:20:27,036 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:27,036 INFO L514 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:27,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-02-15 02:20:27,036 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 476658038, now seen corresponding path program 69 times [2022-02-15 02:20:27,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:27,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281123787] [2022-02-15 02:20:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:27,037 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:27,037 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:27,038 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:29,038 INFO 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 02:20:29,038 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:29,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281123787] [2022-02-15 02:20:29,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1281123787] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:29,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:29,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-15 02:20:29,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583461274] [2022-02-15 02:20:29,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:29,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-15 02:20:29,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:29,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-15 02:20:29,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 02:20:29,040 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 73 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 72 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 02:20:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:31,112 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-02-15 02:20:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 02:20:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 72 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 02:20:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:31,113 INFO L225 Difference]: With dead ends: 88 [2022-02-15 02:20:31,113 INFO L226 Difference]: Without dead ends: 84 [2022-02-15 02:20:31,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2022-02-15 02:20:31,115 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:31,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-15 02:20:31,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-02-15 02:20:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 80 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 02:20:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2022-02-15 02:20:31,124 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 80 [2022-02-15 02:20:31,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:31,124 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2022-02-15 02:20:31,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 72 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 02:20:31,125 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2022-02-15 02:20:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 02:20:31,125 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:31,125 INFO L514 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:31,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-02-15 02:20:31,125 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:31,125 INFO L85 PathProgramCache]: Analyzing trace with hash 476706857, now seen corresponding path program 70 times [2022-02-15 02:20:31,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:31,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281626770] [2022-02-15 02:20:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:31,126 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:31,126 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:31,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:31,127 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:33,123 INFO 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 02:20:33,123 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:33,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281626770] [2022-02-15 02:20:33,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1281626770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:33,123 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:33,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-15 02:20:33,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509677706] [2022-02-15 02:20:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:33,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-15 02:20:33,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-15 02:20:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=2842, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 02:20:33,124 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 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 02:20:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:36,321 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2022-02-15 02:20:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 02:20:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 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 02:20:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:36,322 INFO L225 Difference]: With dead ends: 91 [2022-02-15 02:20:36,322 INFO L226 Difference]: Without dead ends: 89 [2022-02-15 02:20:36,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2623 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7814, Invalid=13066, Unknown=0, NotChecked=0, Total=20880 [2022-02-15 02:20:36,323 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:36,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-15 02:20:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-02-15 02:20:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.037037037037037) internal successors, (84), 82 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-02-15 02:20:36,341 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 80 [2022-02-15 02:20:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:36,341 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-02-15 02:20:36,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 73 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 02:20:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-02-15 02:20:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 02:20:36,341 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:36,342 INFO L514 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:36,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-02-15 02:20:36,342 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:36,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1893013750, now seen corresponding path program 70 times [2022-02-15 02:20:36,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:36,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764041789] [2022-02-15 02:20:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:36,343 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:36,343 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:36,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:36,344 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:38,369 INFO 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 02:20:38,369 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:38,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764041789] [2022-02-15 02:20:38,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1764041789] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:38,369 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:38,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-15 02:20:38,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578255716] [2022-02-15 02:20:38,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:38,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-15 02:20:38,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:38,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-15 02:20:38,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 02:20:38,371 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 74 states, 74 states have (on average 1.054054054054054) internal successors, (78), 73 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:40,487 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-02-15 02:20:40,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 02:20:40,488 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.054054054054054) internal successors, (78), 73 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2022-02-15 02:20:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:40,488 INFO L225 Difference]: With dead ends: 89 [2022-02-15 02:20:40,488 INFO L226 Difference]: Without dead ends: 85 [2022-02-15 02:20:40,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2022-02-15 02:20:40,489 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:40,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-15 02:20:40,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-02-15 02:20:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 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 02:20:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-02-15 02:20:40,495 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 81 [2022-02-15 02:20:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:40,496 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-02-15 02:20:40,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.054054054054054) internal successors, (78), 73 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:40,496 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-02-15 02:20:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 02:20:40,496 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:40,496 INFO L514 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:40,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-02-15 02:20:40,496 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:40,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:40,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1893062569, now seen corresponding path program 71 times [2022-02-15 02:20:40,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:40,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949313591] [2022-02-15 02:20:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:40,497 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:40,497 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:40,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:40,497 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:42,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:42,539 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:42,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949313591] [2022-02-15 02:20:42,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1949313591] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:42,539 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:42,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-15 02:20:42,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841120538] [2022-02-15 02:20:42,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:42,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-15 02:20:42,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:42,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-15 02:20:42,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2632, Invalid=2918, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:20:42,541 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:45,830 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-02-15 02:20:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 02:20:45,831 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2022-02-15 02:20:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:45,831 INFO L225 Difference]: With dead ends: 92 [2022-02-15 02:20:45,831 INFO L226 Difference]: Without dead ends: 90 [2022-02-15 02:20:45,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2696 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=8032, Invalid=13430, Unknown=0, NotChecked=0, Total=21462 [2022-02-15 02:20:45,832 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:45,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-15 02:20:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2022-02-15 02:20:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 83 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 02:20:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2022-02-15 02:20:45,842 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 81 [2022-02-15 02:20:45,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:45,842 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2022-02-15 02:20:45,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.04) internal successors, (78), 74 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:20:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2022-02-15 02:20:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-15 02:20:45,843 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:45,843 INFO L514 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:45,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-02-15 02:20:45,843 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1444599434, now seen corresponding path program 71 times [2022-02-15 02:20:45,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:45,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333659778] [2022-02-15 02:20:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:45,844 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:45,845 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:45,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:45,845 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:20:48,015 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:48,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333659778] [2022-02-15 02:20:48,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [333659778] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:48,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:48,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-15 02:20:48,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940796838] [2022-02-15 02:20:48,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:48,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-15 02:20:48,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:48,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-15 02:20:48,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 02:20:48,017 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 75 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 74 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 02:20:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:50,174 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-02-15 02:20:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 02:20:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 74 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 02:20:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:50,175 INFO L225 Difference]: With dead ends: 90 [2022-02-15 02:20:50,175 INFO L226 Difference]: Without dead ends: 86 [2022-02-15 02:20:50,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2022-02-15 02:20:50,177 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:50,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-15 02:20:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-02-15 02:20:50,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 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 02:20:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2022-02-15 02:20:50,186 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 82 [2022-02-15 02:20:50,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:50,187 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2022-02-15 02:20:50,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 74 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 02:20:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2022-02-15 02:20:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-15 02:20:50,187 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:50,187 INFO L514 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:50,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-02-15 02:20:50,187 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1444550615, now seen corresponding path program 72 times [2022-02-15 02:20:50,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:50,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390180081] [2022-02-15 02:20:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:50,189 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:50,189 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:50,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:50,189 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:52,395 INFO 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 02:20:52,395 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:52,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390180081] [2022-02-15 02:20:52,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [390180081] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:52,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:52,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-15 02:20:52,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062297535] [2022-02-15 02:20:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:52,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-15 02:20:52,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:52,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-15 02:20:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=2995, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 02:20:52,397 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 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 02:20:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:20:55,811 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2022-02-15 02:20:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 02:20:55,812 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 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 02:20:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:20:55,812 INFO L225 Difference]: With dead ends: 93 [2022-02-15 02:20:55,812 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 02:20:55,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2770 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8253, Invalid=13799, Unknown=0, NotChecked=0, Total=22052 [2022-02-15 02:20:55,813 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:20:55,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:20:55,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 02:20:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2022-02-15 02:20:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.036144578313253) internal successors, (86), 84 states have internal predecessors, (86), 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 02:20:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-02-15 02:20:55,820 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82 [2022-02-15 02:20:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:20:55,821 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-02-15 02:20:55,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 75 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 02:20:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-02-15 02:20:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 02:20:55,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:20:55,821 INFO L514 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:20:55,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-02-15 02:20:55,821 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:20:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:20:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1831393034, now seen corresponding path program 72 times [2022-02-15 02:20:55,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:20:55,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375924503] [2022-02-15 02:20:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:20:55,823 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:20:55,823 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:20:55,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:20:55,823 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:20:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:20:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:20:57,980 INFO 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 02:20:57,980 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:20:57,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375924503] [2022-02-15 02:20:57,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1375924503] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:20:57,980 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:20:57,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-15 02:20:57,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415501336] [2022-02-15 02:20:57,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:20:57,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-15 02:20:57,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:20:57,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-15 02:20:57,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 02:20:57,981 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 76 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 75 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:00,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:00,192 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2022-02-15 02:21:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 02:21:00,193 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 75 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2022-02-15 02:21:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:00,193 INFO L225 Difference]: With dead ends: 91 [2022-02-15 02:21:00,193 INFO L226 Difference]: Without dead ends: 87 [2022-02-15 02:21:00,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2022-02-15 02:21:00,195 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:00,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-15 02:21:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-02-15 02:21:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2022-02-15 02:21:00,201 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 83 [2022-02-15 02:21:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:00,201 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2022-02-15 02:21:00,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 75 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2022-02-15 02:21:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 02:21:00,201 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:00,201 INFO L514 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:00,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-02-15 02:21:00,201 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:00,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1831344215, now seen corresponding path program 73 times [2022-02-15 02:21:00,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:00,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788934824] [2022-02-15 02:21:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:00,202 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:00,202 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:00,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:00,203 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:02,339 INFO 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 02:21:02,339 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:02,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788934824] [2022-02-15 02:21:02,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [788934824] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:02,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:02,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-15 02:21:02,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434655476] [2022-02-15 02:21:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:02,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-15 02:21:02,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:02,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-15 02:21:02,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2779, Invalid=3073, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:21:02,341 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:05,810 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2022-02-15 02:21:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-15 02:21:05,810 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2022-02-15 02:21:05,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:05,810 INFO L225 Difference]: With dead ends: 94 [2022-02-15 02:21:05,810 INFO L226 Difference]: Without dead ends: 92 [2022-02-15 02:21:05,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2845 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8477, Invalid=14173, Unknown=0, NotChecked=0, Total=22650 [2022-02-15 02:21:05,811 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:05,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-02-15 02:21:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2022-02-15 02:21:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 85 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 02:21:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-02-15 02:21:05,818 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 83 [2022-02-15 02:21:05,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:05,818 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-02-15 02:21:05,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 76 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:05,818 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-02-15 02:21:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 02:21:05,818 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:05,818 INFO L514 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:05,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-02-15 02:21:05,818 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash -937092746, now seen corresponding path program 73 times [2022-02-15 02:21:05,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:05,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733309447] [2022-02-15 02:21:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:05,820 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:05,820 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:05,820 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:08,050 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:08,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733309447] [2022-02-15 02:21:08,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [733309447] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:08,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:08,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-15 02:21:08,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625918599] [2022-02-15 02:21:08,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:08,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-15 02:21:08,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:08,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-15 02:21:08,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 02:21:08,051 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 77 states, 77 states have (on average 1.051948051948052) internal successors, (81), 76 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 02:21:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:10,335 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-02-15 02:21:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-15 02:21:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.051948051948052) internal successors, (81), 76 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 02:21:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:10,336 INFO L225 Difference]: With dead ends: 92 [2022-02-15 02:21:10,336 INFO L226 Difference]: Without dead ends: 88 [2022-02-15 02:21:10,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2022-02-15 02:21:10,338 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:10,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-02-15 02:21:10,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-02-15 02:21:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 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 02:21:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2022-02-15 02:21:10,345 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 84 [2022-02-15 02:21:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:10,345 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2022-02-15 02:21:10,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.051948051948052) internal successors, (81), 76 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 02:21:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2022-02-15 02:21:10,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 02:21:10,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:10,346 INFO L514 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:10,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-02-15 02:21:10,346 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:10,346 INFO L85 PathProgramCache]: Analyzing trace with hash -937043927, now seen corresponding path program 74 times [2022-02-15 02:21:10,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:10,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721554649] [2022-02-15 02:21:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:10,347 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:10,347 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:10,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:10,347 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:12,570 INFO 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 02:21:12,570 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:12,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721554649] [2022-02-15 02:21:12,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1721554649] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:12,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:12,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-15 02:21:12,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270424551] [2022-02-15 02:21:12,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:12,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-15 02:21:12,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-15 02:21:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=3152, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 02:21:12,572 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 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 02:21:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:16,142 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2022-02-15 02:21:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-15 02:21:16,142 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 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 02:21:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:16,142 INFO L225 Difference]: With dead ends: 95 [2022-02-15 02:21:16,142 INFO L226 Difference]: Without dead ends: 93 [2022-02-15 02:21:16,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2921 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=8704, Invalid=14552, Unknown=0, NotChecked=0, Total=23256 [2022-02-15 02:21:16,143 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:16,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-15 02:21:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2022-02-15 02:21:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.035294117647059) internal successors, (88), 86 states have internal predecessors, (88), 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 02:21:16,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2022-02-15 02:21:16,150 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 84 [2022-02-15 02:21:16,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:16,150 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2022-02-15 02:21:16,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 77 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 02:21:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2022-02-15 02:21:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-15 02:21:16,150 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:16,150 INFO L514 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:16,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-02-15 02:21:16,151 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:16,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1016412406, now seen corresponding path program 74 times [2022-02-15 02:21:16,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:16,151 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084234108] [2022-02-15 02:21:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:16,152 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:16,152 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:16,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:16,152 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:18,430 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:18,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084234108] [2022-02-15 02:21:18,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1084234108] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:18,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:18,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-15 02:21:18,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960411615] [2022-02-15 02:21:18,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:18,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-15 02:21:18,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:18,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-15 02:21:18,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 02:21:18,431 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 78 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 77 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:20,771 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2022-02-15 02:21:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-15 02:21:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 77 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2022-02-15 02:21:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:20,772 INFO L225 Difference]: With dead ends: 93 [2022-02-15 02:21:20,772 INFO L226 Difference]: Without dead ends: 89 [2022-02-15 02:21:20,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2022-02-15 02:21:20,773 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:20,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-15 02:21:20,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-02-15 02:21:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 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 02:21:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2022-02-15 02:21:20,783 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 85 [2022-02-15 02:21:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:20,783 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2022-02-15 02:21:20,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 77 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2022-02-15 02:21:20,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-15 02:21:20,783 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:20,783 INFO L514 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:20,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-02-15 02:21:20,784 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:20,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1016461225, now seen corresponding path program 75 times [2022-02-15 02:21:20,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:20,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785159955] [2022-02-15 02:21:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:20,785 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:20,785 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:20,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:20,785 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:23,048 INFO 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 02:21:23,048 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:23,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785159955] [2022-02-15 02:21:23,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1785159955] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:23,048 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:23,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-15 02:21:23,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008978708] [2022-02-15 02:21:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:23,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-15 02:21:23,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-15 02:21:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2930, Invalid=3232, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:21:23,050 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 79 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 78 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:26,704 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2022-02-15 02:21:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 02:21:26,704 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 78 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2022-02-15 02:21:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:26,704 INFO L225 Difference]: With dead ends: 96 [2022-02-15 02:21:26,704 INFO L226 Difference]: Without dead ends: 94 [2022-02-15 02:21:26,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2998 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8934, Invalid=14936, Unknown=0, NotChecked=0, Total=23870 [2022-02-15 02:21:26,706 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:26,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-15 02:21:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2022-02-15 02:21:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 87 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2022-02-15 02:21:26,715 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85 [2022-02-15 02:21:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:26,716 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2022-02-15 02:21:26,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 78 states have internal predecessors, (82), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2022-02-15 02:21:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-15 02:21:26,716 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:26,716 INFO L514 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:26,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-02-15 02:21:26,716 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:26,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1445529974, now seen corresponding path program 75 times [2022-02-15 02:21:26,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:26,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830026024] [2022-02-15 02:21:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:26,718 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:26,718 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:26,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:26,718 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:29,059 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:29,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830026024] [2022-02-15 02:21:29,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1830026024] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:29,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:29,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-15 02:21:29,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052424069] [2022-02-15 02:21:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:29,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-15 02:21:29,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:29,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-15 02:21:29,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 02:21:29,061 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 79 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 78 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 02:21:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:31,445 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2022-02-15 02:21:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 02:21:31,445 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 78 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 02:21:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:31,446 INFO L225 Difference]: With dead ends: 94 [2022-02-15 02:21:31,446 INFO L226 Difference]: Without dead ends: 90 [2022-02-15 02:21:31,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2022-02-15 02:21:31,447 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:31,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-15 02:21:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-02-15 02:21:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 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 02:21:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2022-02-15 02:21:31,455 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 86 [2022-02-15 02:21:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:31,455 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2022-02-15 02:21:31,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 78 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 02:21:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2022-02-15 02:21:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-15 02:21:31,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:31,456 INFO L514 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:31,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-02-15 02:21:31,456 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1445578793, now seen corresponding path program 76 times [2022-02-15 02:21:31,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:31,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015561099] [2022-02-15 02:21:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:31,457 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:31,457 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:31,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:31,457 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:33,761 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:33,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015561099] [2022-02-15 02:21:33,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1015561099] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:33,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:33,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-15 02:21:33,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271563747] [2022-02-15 02:21:33,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:33,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-15 02:21:33,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-15 02:21:33,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=3313, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 02:21:33,763 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 80 states, 80 states have (on average 1.0375) internal successors, (83), 79 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 02:21:37,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:37,485 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2022-02-15 02:21:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-15 02:21:37,485 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.0375) internal successors, (83), 79 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 02:21:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:37,486 INFO L225 Difference]: With dead ends: 97 [2022-02-15 02:21:37,486 INFO L226 Difference]: Without dead ends: 95 [2022-02-15 02:21:37,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3076 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=9167, Invalid=15325, Unknown=0, NotChecked=0, Total=24492 [2022-02-15 02:21:37,487 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:37,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:37,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-15 02:21:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2022-02-15 02:21:37,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 88 states have internal predecessors, (90), 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 02:21:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2022-02-15 02:21:37,496 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 86 [2022-02-15 02:21:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:37,496 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2022-02-15 02:21:37,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.0375) internal successors, (83), 79 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 02:21:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2022-02-15 02:21:37,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-15 02:21:37,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:37,497 INFO L514 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:37,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-02-15 02:21:37,497 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:37,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1863272694, now seen corresponding path program 76 times [2022-02-15 02:21:37,497 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:37,497 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227436918] [2022-02-15 02:21:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:37,498 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:37,498 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:37,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:37,498 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:39,862 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:39,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227436918] [2022-02-15 02:21:39,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [227436918] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:39,862 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:39,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-15 02:21:39,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515799589] [2022-02-15 02:21:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:39,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-15 02:21:39,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-15 02:21:39,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 02:21:39,864 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 80 states, 80 states have (on average 1.05) internal successors, (84), 79 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:42,345 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2022-02-15 02:21:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-15 02:21:42,346 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.05) internal successors, (84), 79 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2022-02-15 02:21:42,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:42,346 INFO L225 Difference]: With dead ends: 95 [2022-02-15 02:21:42,346 INFO L226 Difference]: Without dead ends: 91 [2022-02-15 02:21:42,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2022-02-15 02:21:42,347 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:42,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-15 02:21:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-02-15 02:21:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 87 states have internal predecessors, (88), 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 02:21:42,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2022-02-15 02:21:42,358 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 87 [2022-02-15 02:21:42,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:42,358 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2022-02-15 02:21:42,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.05) internal successors, (84), 79 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2022-02-15 02:21:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-15 02:21:42,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:42,359 INFO L514 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:42,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-02-15 02:21:42,359 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1863321513, now seen corresponding path program 77 times [2022-02-15 02:21:42,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:42,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740340548] [2022-02-15 02:21:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:42,360 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:42,361 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:42,361 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:21:44,766 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:44,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740340548] [2022-02-15 02:21:44,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1740340548] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:44,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:44,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-15 02:21:44,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315586222] [2022-02-15 02:21:44,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:44,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-15 02:21:44,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-15 02:21:44,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3085, Invalid=3395, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:21:44,767 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 81 states, 81 states have (on average 1.037037037037037) internal successors, (84), 80 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:48,564 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2022-02-15 02:21:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 02:21:48,564 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.037037037037037) internal successors, (84), 80 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2022-02-15 02:21:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:48,564 INFO L225 Difference]: With dead ends: 98 [2022-02-15 02:21:48,565 INFO L226 Difference]: Without dead ends: 96 [2022-02-15 02:21:48,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9403, Invalid=15719, Unknown=0, NotChecked=0, Total=25122 [2022-02-15 02:21:48,566 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:48,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-15 02:21:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2022-02-15 02:21:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 89 states have internal predecessors, (91), 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 02:21:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2022-02-15 02:21:48,582 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 87 [2022-02-15 02:21:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:48,582 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2022-02-15 02:21:48,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.037037037037037) internal successors, (84), 80 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:21:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2022-02-15 02:21:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 02:21:48,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:48,583 INFO L514 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:48,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-02-15 02:21:48,583 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:48,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:48,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1928395126, now seen corresponding path program 77 times [2022-02-15 02:21:48,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:48,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865889120] [2022-02-15 02:21:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:48,584 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:48,584 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:48,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:48,585 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:51,029 INFO 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 02:21:51,029 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:51,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865889120] [2022-02-15 02:21:51,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1865889120] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:51,029 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:51,029 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-15 02:21:51,029 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462689254] [2022-02-15 02:21:51,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:51,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-15 02:21:51,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:51,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-15 02:21:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 02:21:51,031 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 81 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 80 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 02:21:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:53,536 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2022-02-15 02:21:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 02:21:53,536 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 80 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 02:21:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:53,536 INFO L225 Difference]: With dead ends: 96 [2022-02-15 02:21:53,536 INFO L226 Difference]: Without dead ends: 92 [2022-02-15 02:21:53,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2022-02-15 02:21:53,537 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:53,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-02-15 02:21:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-02-15 02:21:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 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 02:21:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2022-02-15 02:21:53,544 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 88 [2022-02-15 02:21:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:53,544 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2022-02-15 02:21:53,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 80 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 02:21:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2022-02-15 02:21:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 02:21:53,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:53,545 INFO L514 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:53,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-02-15 02:21:53,545 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1928443945, now seen corresponding path program 78 times [2022-02-15 02:21:53,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:53,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814853096] [2022-02-15 02:21:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:53,546 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:53,546 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:53,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:53,547 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:55,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:21:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:21:55,966 INFO 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 02:21:55,967 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:21:55,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814853096] [2022-02-15 02:21:55,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1814853096] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:21:55,967 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:21:55,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-15 02:21:55,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641209176] [2022-02-15 02:21:55,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:21:55,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-15 02:21:55,967 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:21:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-15 02:21:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=3478, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 02:21:55,968 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 82 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 81 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 02:21:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:21:59,861 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2022-02-15 02:21:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-15 02:21:59,861 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 81 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 02:21:59,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:21:59,861 INFO L225 Difference]: With dead ends: 99 [2022-02-15 02:21:59,861 INFO L226 Difference]: Without dead ends: 97 [2022-02-15 02:21:59,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3235 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9642, Invalid=16118, Unknown=0, NotChecked=0, Total=25760 [2022-02-15 02:21:59,863 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:21:59,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:21:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-15 02:21:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2022-02-15 02:21:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 90 states have internal predecessors, (92), 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 02:21:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2022-02-15 02:21:59,876 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 88 [2022-02-15 02:21:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:21:59,877 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2022-02-15 02:21:59,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 81 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 02:21:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2022-02-15 02:21:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 02:21:59,877 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:21:59,877 INFO L514 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:21:59,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-02-15 02:21:59,877 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:21:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:21:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash -347776778, now seen corresponding path program 78 times [2022-02-15 02:21:59,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:21:59,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025503723] [2022-02-15 02:21:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:21:59,878 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:21:59,878 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:21:59,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:21:59,879 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:21:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:02,391 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:02,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025503723] [2022-02-15 02:22:02,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1025503723] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:02,391 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:02,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-15 02:22:02,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769931601] [2022-02-15 02:22:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:02,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-15 02:22:02,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:02,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-15 02:22:02,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 02:22:02,392 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 82 states, 82 states have (on average 1.048780487804878) internal successors, (86), 81 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:04,971 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2022-02-15 02:22:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-15 02:22:04,971 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.048780487804878) internal successors, (86), 81 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-02-15 02:22:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:04,971 INFO L225 Difference]: With dead ends: 97 [2022-02-15 02:22:04,971 INFO L226 Difference]: Without dead ends: 93 [2022-02-15 02:22:04,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2022-02-15 02:22:04,972 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:04,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:04,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-15 02:22:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-02-15 02:22:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 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 02:22:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2022-02-15 02:22:04,979 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 89 [2022-02-15 02:22:04,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:04,979 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2022-02-15 02:22:04,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.048780487804878) internal successors, (86), 81 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2022-02-15 02:22:04,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-15 02:22:04,980 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:04,980 INFO L514 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:04,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-02-15 02:22:04,980 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash -347727959, now seen corresponding path program 79 times [2022-02-15 02:22:04,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:04,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557317473] [2022-02-15 02:22:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:04,981 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:04,981 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:04,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:04,982 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:07,455 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:07,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557317473] [2022-02-15 02:22:07,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [557317473] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:07,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:07,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-15 02:22:07,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442179336] [2022-02-15 02:22:07,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:07,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-15 02:22:07,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:07,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-15 02:22:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3244, Invalid=3562, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:22:07,457 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand has 83 states, 83 states have (on average 1.036144578313253) internal successors, (86), 82 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:11,439 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2022-02-15 02:22:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-15 02:22:11,439 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.036144578313253) internal successors, (86), 82 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-02-15 02:22:11,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:11,440 INFO L225 Difference]: With dead ends: 100 [2022-02-15 02:22:11,440 INFO L226 Difference]: Without dead ends: 98 [2022-02-15 02:22:11,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9884, Invalid=16522, Unknown=0, NotChecked=0, Total=26406 [2022-02-15 02:22:11,441 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:11,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-02-15 02:22:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2022-02-15 02:22:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 91 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 02:22:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2022-02-15 02:22:11,447 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 89 [2022-02-15 02:22:11,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:11,448 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2022-02-15 02:22:11,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.036144578313253) internal successors, (86), 82 states have internal predecessors, (86), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2022-02-15 02:22:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-15 02:22:11,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:11,448 INFO L514 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:11,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-02-15 02:22:11,448 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2105338230, now seen corresponding path program 79 times [2022-02-15 02:22:11,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:11,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975499695] [2022-02-15 02:22:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:11,449 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:11,449 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:11,450 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:13,990 INFO 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 02:22:13,990 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:13,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975499695] [2022-02-15 02:22:13,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1975499695] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:13,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:13,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-15 02:22:13,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205465765] [2022-02-15 02:22:13,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:13,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-15 02:22:13,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-15 02:22:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 02:22:13,992 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 83 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 82 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 02:22:16,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:16,622 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2022-02-15 02:22:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-15 02:22:16,623 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 82 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 02:22:16,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:16,623 INFO L225 Difference]: With dead ends: 98 [2022-02-15 02:22:16,623 INFO L226 Difference]: Without dead ends: 94 [2022-02-15 02:22:16,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2022-02-15 02:22:16,624 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:16,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:16,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-15 02:22:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-02-15 02:22:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 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 02:22:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2022-02-15 02:22:16,631 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 90 [2022-02-15 02:22:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:16,631 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2022-02-15 02:22:16,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 82 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 02:22:16,631 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2022-02-15 02:22:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-15 02:22:16,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:16,631 INFO L514 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:16,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-02-15 02:22:16,631 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2105387049, now seen corresponding path program 80 times [2022-02-15 02:22:16,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:16,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308394762] [2022-02-15 02:22:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:16,632 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:16,632 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:16,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:16,633 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:19,175 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:19,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308394762] [2022-02-15 02:22:19,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [308394762] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:19,175 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:19,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-15 02:22:19,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274934955] [2022-02-15 02:22:19,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:19,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-15 02:22:19,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:19,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-15 02:22:19,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=3647, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 02:22:19,176 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 84 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 83 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 02:22:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:23,240 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2022-02-15 02:22:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 02:22:23,241 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 83 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 02:22:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:23,241 INFO L225 Difference]: With dead ends: 101 [2022-02-15 02:22:23,241 INFO L226 Difference]: Without dead ends: 99 [2022-02-15 02:22:23,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3398 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=10129, Invalid=16931, Unknown=0, NotChecked=0, Total=27060 [2022-02-15 02:22:23,242 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:23,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-15 02:22:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2022-02-15 02:22:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.032967032967033) internal successors, (94), 92 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-02-15 02:22:23,249 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 90 [2022-02-15 02:22:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:23,249 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-02-15 02:22:23,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 83 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 02:22:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-02-15 02:22:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-15 02:22:23,250 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:23,250 INFO L514 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:23,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-02-15 02:22:23,250 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash 842492150, now seen corresponding path program 80 times [2022-02-15 02:22:23,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:23,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515877421] [2022-02-15 02:22:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:23,251 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:23,251 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:23,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:23,252 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:25,880 INFO 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 02:22:25,880 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:25,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515877421] [2022-02-15 02:22:25,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [515877421] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:25,880 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:25,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-15 02:22:25,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172033731] [2022-02-15 02:22:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:25,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-15 02:22:25,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-15 02:22:25,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 02:22:25,881 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 84 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 83 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:28,568 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2022-02-15 02:22:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 02:22:28,568 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 83 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2022-02-15 02:22:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:28,569 INFO L225 Difference]: With dead ends: 99 [2022-02-15 02:22:28,569 INFO L226 Difference]: Without dead ends: 95 [2022-02-15 02:22:28,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2022-02-15 02:22:28,570 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:28,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-15 02:22:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-02-15 02:22:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 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 02:22:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2022-02-15 02:22:28,583 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 91 [2022-02-15 02:22:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:28,583 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2022-02-15 02:22:28,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 83 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2022-02-15 02:22:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-15 02:22:28,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:28,584 INFO L514 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:28,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-02-15 02:22:28,584 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:28,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:28,584 INFO L85 PathProgramCache]: Analyzing trace with hash 842540969, now seen corresponding path program 81 times [2022-02-15 02:22:28,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:28,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144107617] [2022-02-15 02:22:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:28,585 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:28,585 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:28,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:28,586 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:31,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:31,203 INFO 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 02:22:31,203 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:31,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144107617] [2022-02-15 02:22:31,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2144107617] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:31,203 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:31,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-15 02:22:31,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494725429] [2022-02-15 02:22:31,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:31,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-15 02:22:31,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-15 02:22:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3407, Invalid=3733, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:22:31,205 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 85 states, 85 states have (on average 1.035294117647059) internal successors, (88), 84 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:35,364 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2022-02-15 02:22:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-15 02:22:35,364 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.035294117647059) internal successors, (88), 84 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2022-02-15 02:22:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:35,364 INFO L225 Difference]: With dead ends: 102 [2022-02-15 02:22:35,364 INFO L226 Difference]: Without dead ends: 100 [2022-02-15 02:22:35,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=10377, Invalid=17345, Unknown=0, NotChecked=0, Total=27722 [2022-02-15 02:22:35,366 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:35,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-15 02:22:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2022-02-15 02:22:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 93 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 02:22:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-02-15 02:22:35,373 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 91 [2022-02-15 02:22:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:35,373 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-02-15 02:22:35,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.035294117647059) internal successors, (88), 84 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-02-15 02:22:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-15 02:22:35,373 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:35,373 INFO L514 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:35,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-02-15 02:22:35,373 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 348969334, now seen corresponding path program 81 times [2022-02-15 02:22:35,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:35,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394695473] [2022-02-15 02:22:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:35,374 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:35,374 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:35,375 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:38,044 INFO 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 02:22:38,044 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:38,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394695473] [2022-02-15 02:22:38,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1394695473] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:38,044 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:38,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-15 02:22:38,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091846051] [2022-02-15 02:22:38,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:38,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-15 02:22:38,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-15 02:22:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 02:22:38,047 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 85 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 84 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:40,802 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2022-02-15 02:22:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-15 02:22:40,802 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 84 states have internal predecessors, (89), 1 states have call successors, (2), 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 92 [2022-02-15 02:22:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:40,803 INFO L225 Difference]: With dead ends: 100 [2022-02-15 02:22:40,803 INFO L226 Difference]: Without dead ends: 96 [2022-02-15 02:22:40,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2022-02-15 02:22:40,804 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:40,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-15 02:22:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-02-15 02:22:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.021978021978022) internal successors, (93), 92 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 02:22:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2022-02-15 02:22:40,812 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 92 [2022-02-15 02:22:40,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:40,812 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2022-02-15 02:22:40,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 84 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2022-02-15 02:22:40,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-15 02:22:40,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:40,812 INFO L514 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:40,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-02-15 02:22:40,812 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:40,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 349018153, now seen corresponding path program 82 times [2022-02-15 02:22:40,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:40,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385909055] [2022-02-15 02:22:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:40,813 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:40,813 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:40,814 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:22:43,462 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:43,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385909055] [2022-02-15 02:22:43,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [385909055] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:43,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:43,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-15 02:22:43,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468163337] [2022-02-15 02:22:43,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:43,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-15 02:22:43,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-15 02:22:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=3820, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 02:22:43,464 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 86 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 85 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:47,750 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2022-02-15 02:22:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-15 02:22:47,750 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 85 states have internal predecessors, (89), 1 states have call successors, (2), 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 92 [2022-02-15 02:22:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:47,751 INFO L225 Difference]: With dead ends: 103 [2022-02-15 02:22:47,751 INFO L226 Difference]: Without dead ends: 101 [2022-02-15 02:22:47,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3565 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=10628, Invalid=17764, Unknown=0, NotChecked=0, Total=28392 [2022-02-15 02:22:47,752 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:47,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-15 02:22:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2022-02-15 02:22:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.032258064516129) internal successors, (96), 94 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 02:22:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2022-02-15 02:22:47,762 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 92 [2022-02-15 02:22:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:47,762 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2022-02-15 02:22:47,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 85 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2022-02-15 02:22:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 02:22:47,762 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:47,762 INFO L514 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:47,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-02-15 02:22:47,763 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2065336074, now seen corresponding path program 82 times [2022-02-15 02:22:47,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:47,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16686572] [2022-02-15 02:22:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:47,764 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:47,764 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:47,764 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:50,510 INFO 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 02:22:50,510 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:50,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16686572] [2022-02-15 02:22:50,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [16686572] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:50,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:50,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-15 02:22:50,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104024315] [2022-02-15 02:22:50,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:50,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-15 02:22:50,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:50,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-15 02:22:50,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 02:22:50,512 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 86 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 85 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 02:22:53,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:22:53,329 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2022-02-15 02:22:53,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-15 02:22:53,329 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 85 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 02:22:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:22:53,330 INFO L225 Difference]: With dead ends: 101 [2022-02-15 02:22:53,330 INFO L226 Difference]: Without dead ends: 97 [2022-02-15 02:22:53,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2022-02-15 02:22:53,331 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:22:53,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:22:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-15 02:22:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-02-15 02:22:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 93 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:22:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2022-02-15 02:22:53,339 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 93 [2022-02-15 02:22:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:22:53,339 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2022-02-15 02:22:53,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 85 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 02:22:53,339 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2022-02-15 02:22:53,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 02:22:53,339 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:22:53,340 INFO L514 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:22:53,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-02-15 02:22:53,340 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:22:53,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:22:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2065287255, now seen corresponding path program 83 times [2022-02-15 02:22:53,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:22:53,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357026093] [2022-02-15 02:22:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:22:53,341 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:22:53,341 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:22:53,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:22:53,341 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:22:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:22:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:22:56,086 INFO 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 02:22:56,086 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:22:56,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357026093] [2022-02-15 02:22:56,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1357026093] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:22:56,086 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:22:56,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-15 02:22:56,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633970743] [2022-02-15 02:22:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:22:56,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-15 02:22:56,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:22:56,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-15 02:22:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3574, Invalid=3908, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:22:56,088 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 87 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 86 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 02:23:00,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:00,423 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2022-02-15 02:23:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 02:23:00,424 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 86 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 02:23:00,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:00,424 INFO L225 Difference]: With dead ends: 104 [2022-02-15 02:23:00,424 INFO L226 Difference]: Without dead ends: 102 [2022-02-15 02:23:00,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3650 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=10882, Invalid=18188, Unknown=0, NotChecked=0, Total=29070 [2022-02-15 02:23:00,425 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:00,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:00,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-02-15 02:23:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2022-02-15 02:23:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 95 states have internal predecessors, (97), 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 02:23:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2022-02-15 02:23:00,433 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 93 [2022-02-15 02:23:00,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:00,433 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2022-02-15 02:23:00,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.0344827586206897) internal successors, (90), 86 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 02:23:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2022-02-15 02:23:00,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-02-15 02:23:00,433 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:00,433 INFO L514 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:00,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-02-15 02:23:00,434 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash 400607606, now seen corresponding path program 83 times [2022-02-15 02:23:00,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:00,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685273892] [2022-02-15 02:23:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:00,435 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:00,435 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:00,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:00,436 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:03,238 INFO 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 02:23:03,238 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:03,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685273892] [2022-02-15 02:23:03,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [685273892] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:03,238 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:03,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-15 02:23:03,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700052031] [2022-02-15 02:23:03,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:03,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-15 02:23:03,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-15 02:23:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 02:23:03,239 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 87 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 86 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:06,114 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2022-02-15 02:23:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 02:23:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 86 states have internal predecessors, (91), 1 states have call successors, (2), 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 94 [2022-02-15 02:23:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:06,114 INFO L225 Difference]: With dead ends: 102 [2022-02-15 02:23:06,114 INFO L226 Difference]: Without dead ends: 98 [2022-02-15 02:23:06,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2022-02-15 02:23:06,115 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:06,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-02-15 02:23:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-02-15 02:23:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 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 02:23:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2022-02-15 02:23:06,123 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 94 [2022-02-15 02:23:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:06,123 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2022-02-15 02:23:06,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 86 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2022-02-15 02:23:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-02-15 02:23:06,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:06,123 INFO L514 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:06,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-02-15 02:23:06,123 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:06,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:06,123 INFO L85 PathProgramCache]: Analyzing trace with hash 400656425, now seen corresponding path program 84 times [2022-02-15 02:23:06,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:06,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725815549] [2022-02-15 02:23:06,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:06,124 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:06,124 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:06,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:06,125 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:08,886 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:08,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725815549] [2022-02-15 02:23:08,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [725815549] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:08,886 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:08,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-15 02:23:08,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558769822] [2022-02-15 02:23:08,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:08,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-15 02:23:08,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-15 02:23:08,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=3997, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 02:23:08,888 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 88 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 87 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:13,305 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2022-02-15 02:23:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 02:23:13,305 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 87 states have internal predecessors, (91), 1 states have call successors, (2), 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 94 [2022-02-15 02:23:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:13,306 INFO L225 Difference]: With dead ends: 105 [2022-02-15 02:23:13,306 INFO L226 Difference]: Without dead ends: 103 [2022-02-15 02:23:13,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3736 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=11139, Invalid=18617, Unknown=0, NotChecked=0, Total=29756 [2022-02-15 02:23:13,307 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:13,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-15 02:23:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2022-02-15 02:23:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 96 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 02:23:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2022-02-15 02:23:13,314 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 94 [2022-02-15 02:23:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:13,314 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2022-02-15 02:23:13,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 87 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2022-02-15 02:23:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-15 02:23:13,315 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:13,315 INFO L514 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:13,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-02-15 02:23:13,315 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash -464549642, now seen corresponding path program 84 times [2022-02-15 02:23:13,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:13,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714686206] [2022-02-15 02:23:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:13,316 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:13,316 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:13,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:13,317 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:23:16,174 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:16,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714686206] [2022-02-15 02:23:16,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [714686206] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:16,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:16,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-15 02:23:16,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163490022] [2022-02-15 02:23:16,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:16,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-15 02:23:16,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-15 02:23:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 02:23:16,176 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 88 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 87 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 02:23:19,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:19,118 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2022-02-15 02:23:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 02:23:19,118 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 87 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 02:23:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:19,118 INFO L225 Difference]: With dead ends: 103 [2022-02-15 02:23:19,118 INFO L226 Difference]: Without dead ends: 99 [2022-02-15 02:23:19,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2022-02-15 02:23:19,120 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:19,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-15 02:23:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-02-15 02:23:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 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 02:23:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2022-02-15 02:23:19,127 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 95 [2022-02-15 02:23:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:19,127 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2022-02-15 02:23:19,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 87 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 02:23:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2022-02-15 02:23:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-15 02:23:19,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:19,127 INFO L514 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:19,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-02-15 02:23:19,127 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -464500823, now seen corresponding path program 85 times [2022-02-15 02:23:19,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:19,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862487258] [2022-02-15 02:23:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:19,128 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:19,128 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:19,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:19,129 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:21,970 INFO 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 02:23:21,970 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:21,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862487258] [2022-02-15 02:23:21,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [862487258] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:21,970 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:21,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-15 02:23:21,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124494639] [2022-02-15 02:23:21,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:21,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-15 02:23:21,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-15 02:23:21,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3745, Invalid=4087, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:23:21,971 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 89 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 88 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 02:23:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:26,504 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2022-02-15 02:23:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 02:23:26,504 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 88 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 02:23:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:26,504 INFO L225 Difference]: With dead ends: 106 [2022-02-15 02:23:26,504 INFO L226 Difference]: Without dead ends: 104 [2022-02-15 02:23:26,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3823 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=11399, Invalid=19051, Unknown=0, NotChecked=0, Total=30450 [2022-02-15 02:23:26,506 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:26,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-15 02:23:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2022-02-15 02:23:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.03125) internal successors, (99), 97 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2022-02-15 02:23:26,514 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 95 [2022-02-15 02:23:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:26,514 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2022-02-15 02:23:26,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 88 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 02:23:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2022-02-15 02:23:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-15 02:23:26,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:26,515 INFO L514 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:26,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-02-15 02:23:26,515 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1514620554, now seen corresponding path program 85 times [2022-02-15 02:23:26,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:26,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529549150] [2022-02-15 02:23:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:26,517 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:26,517 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:26,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:26,517 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:29,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:29,420 INFO 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 02:23:29,420 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:29,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529549150] [2022-02-15 02:23:29,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1529549150] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:29,420 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:29,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-15 02:23:29,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418508299] [2022-02-15 02:23:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:29,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-15 02:23:29,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-15 02:23:29,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-02-15 02:23:29,422 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 89 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 88 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:32,430 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2022-02-15 02:23:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 02:23:32,430 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 88 states have internal predecessors, (93), 1 states have call successors, (2), 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 96 [2022-02-15 02:23:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:32,431 INFO L225 Difference]: With dead ends: 104 [2022-02-15 02:23:32,431 INFO L226 Difference]: Without dead ends: 100 [2022-02-15 02:23:32,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2022-02-15 02:23:32,432 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:32,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-15 02:23:32,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-02-15 02:23:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 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 02:23:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2022-02-15 02:23:32,441 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 96 [2022-02-15 02:23:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:32,441 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2022-02-15 02:23:32,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 88 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2022-02-15 02:23:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-15 02:23:32,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:32,442 INFO L514 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:32,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-02-15 02:23:32,442 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:32,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1514571735, now seen corresponding path program 86 times [2022-02-15 02:23:32,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:32,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693571165] [2022-02-15 02:23:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:32,443 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:32,443 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:32,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:32,443 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:35,307 INFO 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 02:23:35,307 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:35,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693571165] [2022-02-15 02:23:35,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [693571165] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:35,307 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:35,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-15 02:23:35,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050942194] [2022-02-15 02:23:35,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:35,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-15 02:23:35,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:35,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-15 02:23:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=4178, Unknown=0, NotChecked=0, Total=8010 [2022-02-15 02:23:35,309 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 90 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 89 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:39,917 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2022-02-15 02:23:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-15 02:23:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 89 states have internal predecessors, (93), 1 states have call successors, (2), 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 96 [2022-02-15 02:23:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:39,918 INFO L225 Difference]: With dead ends: 107 [2022-02-15 02:23:39,918 INFO L226 Difference]: Without dead ends: 105 [2022-02-15 02:23:39,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3911 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=11662, Invalid=19490, Unknown=0, NotChecked=0, Total=31152 [2022-02-15 02:23:39,919 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:39,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-02-15 02:23:39,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2022-02-15 02:23:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 98 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 02:23:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2022-02-15 02:23:39,926 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 96 [2022-02-15 02:23:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:39,927 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2022-02-15 02:23:39,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 89 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2022-02-15 02:23:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 02:23:39,927 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:39,927 INFO L514 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:39,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-02-15 02:23:39,927 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash 292919542, now seen corresponding path program 86 times [2022-02-15 02:23:39,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:39,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200292094] [2022-02-15 02:23:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:39,928 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:39,928 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:39,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:39,929 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:42,926 INFO 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 02:23:42,926 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:42,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200292094] [2022-02-15 02:23:42,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1200292094] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:42,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:42,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-15 02:23:42,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697663002] [2022-02-15 02:23:42,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:42,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-15 02:23:42,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-15 02:23:42,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-02-15 02:23:42,928 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand has 90 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 89 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 02:23:45,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:45,987 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2022-02-15 02:23:45,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-15 02:23:45,988 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 89 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 02:23:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:45,988 INFO L225 Difference]: With dead ends: 105 [2022-02-15 02:23:45,988 INFO L226 Difference]: Without dead ends: 101 [2022-02-15 02:23:45,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2022-02-15 02:23:45,989 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:45,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-15 02:23:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-02-15 02:23:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 97 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 02:23:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2022-02-15 02:23:45,997 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 97 [2022-02-15 02:23:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:45,997 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2022-02-15 02:23:45,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 89 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 02:23:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2022-02-15 02:23:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-15 02:23:45,997 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:45,997 INFO L514 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:45,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-02-15 02:23:45,997 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:45,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:45,997 INFO L85 PathProgramCache]: Analyzing trace with hash 292968361, now seen corresponding path program 87 times [2022-02-15 02:23:45,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:45,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349419687] [2022-02-15 02:23:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:45,998 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:45,998 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:45,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:45,999 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:48,954 INFO 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 02:23:48,954 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:48,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349419687] [2022-02-15 02:23:48,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [349419687] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:48,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:48,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-15 02:23:48,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60087579] [2022-02-15 02:23:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:48,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-15 02:23:48,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-15 02:23:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3920, Invalid=4270, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:23:48,956 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 91 states, 91 states have (on average 1.032967032967033) internal successors, (94), 90 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 02:23:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:53,668 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2022-02-15 02:23:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 02:23:53,668 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.032967032967033) internal successors, (94), 90 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 02:23:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:53,669 INFO L225 Difference]: With dead ends: 108 [2022-02-15 02:23:53,669 INFO L226 Difference]: Without dead ends: 106 [2022-02-15 02:23:53,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=11928, Invalid=19934, Unknown=0, NotChecked=0, Total=31862 [2022-02-15 02:23:53,670 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:53,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-15 02:23:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-02-15 02:23:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 99 states have internal predecessors, (101), 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 02:23:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2022-02-15 02:23:53,678 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 97 [2022-02-15 02:23:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:53,678 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2022-02-15 02:23:53,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.032967032967033) internal successors, (94), 90 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 02:23:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2022-02-15 02:23:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-15 02:23:53,679 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:53,679 INFO L514 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:53,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-02-15 02:23:53,679 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:53,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:53,679 INFO L85 PathProgramCache]: Analyzing trace with hash 492087670, now seen corresponding path program 87 times [2022-02-15 02:23:53,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:53,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068129388] [2022-02-15 02:23:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:53,680 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:53,680 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:53,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:53,681 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:56,710 INFO 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 02:23:56,710 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:56,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068129388] [2022-02-15 02:23:56,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1068129388] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:56,710 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:56,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-15 02:23:56,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822577073] [2022-02-15 02:23:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:56,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-15 02:23:56,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-15 02:23:56,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 02:23:56,712 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 91 states, 91 states have (on average 1.043956043956044) internal successors, (95), 90 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:59,857 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2022-02-15 02:23:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 02:23:59,858 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.043956043956044) internal successors, (95), 90 states have internal predecessors, (95), 1 states have call successors, (2), 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 98 [2022-02-15 02:23:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:59,858 INFO L225 Difference]: With dead ends: 106 [2022-02-15 02:23:59,858 INFO L226 Difference]: Without dead ends: 102 [2022-02-15 02:23:59,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2022-02-15 02:23:59,859 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:59,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-02-15 02:23:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-02-15 02:23:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 98 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2022-02-15 02:23:59,867 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 98 [2022-02-15 02:23:59,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:59,867 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2022-02-15 02:23:59,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.043956043956044) internal successors, (95), 90 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:23:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2022-02-15 02:23:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-15 02:23:59,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:59,867 INFO L514 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:59,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-02-15 02:23:59,867 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash 492136489, now seen corresponding path program 88 times [2022-02-15 02:23:59,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:59,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749237800] [2022-02-15 02:23:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:59,868 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:23:59,868 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:23:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:59,869 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:02,918 INFO 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 02:24:02,918 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:02,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749237800] [2022-02-15 02:24:02,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [749237800] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:02,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:02,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-15 02:24:02,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542720658] [2022-02-15 02:24:02,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:02,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-15 02:24:02,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-15 02:24:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4009, Invalid=4363, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 02:24:02,920 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand has 92 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 91 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:07,711 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2022-02-15 02:24:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-15 02:24:07,711 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 91 states have internal predecessors, (95), 1 states have call successors, (2), 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 98 [2022-02-15 02:24:07,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:07,712 INFO L225 Difference]: With dead ends: 109 [2022-02-15 02:24:07,712 INFO L226 Difference]: Without dead ends: 107 [2022-02-15 02:24:07,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4090 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=12197, Invalid=20383, Unknown=0, NotChecked=0, Total=32580 [2022-02-15 02:24:07,713 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:07,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:24:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-15 02:24:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2022-02-15 02:24:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 100 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 02:24:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-02-15 02:24:07,720 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 98 [2022-02-15 02:24:07,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:07,720 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-02-15 02:24:07,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 91 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:07,721 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-02-15 02:24:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-15 02:24:07,721 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:07,721 INFO L514 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:07,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-02-15 02:24:07,721 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1923634954, now seen corresponding path program 88 times [2022-02-15 02:24:07,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:07,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865880033] [2022-02-15 02:24:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:07,722 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:07,722 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:24:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:07,722 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:24:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:10,811 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 02:24:10,811 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:10,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865880033] [2022-02-15 02:24:10,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1865880033] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:10,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:10,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-15 02:24:10,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798798429] [2022-02-15 02:24:10,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:10,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-15 02:24:10,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-15 02:24:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 02:24:10,813 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 92 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 91 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 02:24:14,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:14,023 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2022-02-15 02:24:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-15 02:24:14,024 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 91 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 02:24:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:14,024 INFO L225 Difference]: With dead ends: 107 [2022-02-15 02:24:14,024 INFO L226 Difference]: Without dead ends: 103 [2022-02-15 02:24:14,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2022-02-15 02:24:14,025 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:14,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:24:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-15 02:24:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-02-15 02:24:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 99 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 02:24:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2022-02-15 02:24:14,032 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 99 [2022-02-15 02:24:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:14,032 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2022-02-15 02:24:14,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 91 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 02:24:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2022-02-15 02:24:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-15 02:24:14,033 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:14,033 INFO L514 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:14,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-02-15 02:24:14,033 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:14,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1923586135, now seen corresponding path program 89 times [2022-02-15 02:24:14,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:14,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662877451] [2022-02-15 02:24:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:14,034 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:14,034 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:24:14,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:14,034 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:24:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:17,122 INFO 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 02:24:17,122 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:17,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662877451] [2022-02-15 02:24:17,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [662877451] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:17,122 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:17,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-15 02:24:17,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341059808] [2022-02-15 02:24:17,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:17,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-15 02:24:17,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-15 02:24:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=4457, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:24:17,124 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand has 93 states, 93 states have (on average 1.032258064516129) internal successors, (96), 92 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 02:24:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:22,020 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2022-02-15 02:24:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-15 02:24:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.032258064516129) internal successors, (96), 92 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 02:24:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:22,021 INFO L225 Difference]: With dead ends: 110 [2022-02-15 02:24:22,021 INFO L226 Difference]: Without dead ends: 108 [2022-02-15 02:24:22,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4181 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=12469, Invalid=20837, Unknown=0, NotChecked=0, Total=33306 [2022-02-15 02:24:22,022 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:22,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:24:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-15 02:24:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2022-02-15 02:24:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 101 states have internal predecessors, (103), 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 02:24:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-02-15 02:24:22,029 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 99 [2022-02-15 02:24:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:22,029 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-02-15 02:24:22,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.032258064516129) internal successors, (96), 92 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 02:24:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-02-15 02:24:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-15 02:24:22,030 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:22,030 INFO L514 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:22,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-02-15 02:24:22,030 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:22,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:22,030 INFO L85 PathProgramCache]: Analyzing trace with hash 498375030, now seen corresponding path program 89 times [2022-02-15 02:24:22,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:22,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061329026] [2022-02-15 02:24:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:22,031 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:22,031 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:24:22,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:22,032 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:24:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:25,180 INFO 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 02:24:25,180 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:25,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061329026] [2022-02-15 02:24:25,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1061329026] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:25,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:25,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-15 02:24:25,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207708624] [2022-02-15 02:24:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:25,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-15 02:24:25,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-15 02:24:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 02:24:25,183 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 93 states, 93 states have (on average 1.043010752688172) internal successors, (97), 92 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:28,465 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2022-02-15 02:24:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-15 02:24:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.043010752688172) internal successors, (97), 92 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2022-02-15 02:24:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:28,466 INFO L225 Difference]: With dead ends: 108 [2022-02-15 02:24:28,466 INFO L226 Difference]: Without dead ends: 104 [2022-02-15 02:24:28,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2022-02-15 02:24:28,467 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:28,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 64 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:24:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-15 02:24:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-02-15 02:24:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 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 02:24:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2022-02-15 02:24:28,475 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 100 [2022-02-15 02:24:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:28,475 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2022-02-15 02:24:28,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.043010752688172) internal successors, (97), 92 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2022-02-15 02:24:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-15 02:24:28,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:28,475 INFO L514 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:28,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-02-15 02:24:28,476 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 498423849, now seen corresponding path program 90 times [2022-02-15 02:24:28,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:28,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100766426] [2022-02-15 02:24:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:28,476 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:28,476 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:24:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:28,477 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:24:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:31,656 INFO 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 02:24:31,656 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:31,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100766426] [2022-02-15 02:24:31,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2100766426] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:31,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:31,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-15 02:24:31,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300108944] [2022-02-15 02:24:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:31,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-15 02:24:31,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-15 02:24:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4190, Invalid=4552, Unknown=0, NotChecked=0, Total=8742 [2022-02-15 02:24:31,657 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand has 94 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 93 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:36,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:36,656 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2022-02-15 02:24:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-15 02:24:36,657 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 93 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2022-02-15 02:24:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:36,657 INFO L225 Difference]: With dead ends: 111 [2022-02-15 02:24:36,657 INFO L226 Difference]: Without dead ends: 109 [2022-02-15 02:24:36,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4273 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=12744, Invalid=21296, Unknown=0, NotChecked=0, Total=34040 [2022-02-15 02:24:36,658 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:36,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 68 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:24:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-15 02:24:36,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-02-15 02:24:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 102 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-02-15 02:24:36,666 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 100 [2022-02-15 02:24:36,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:36,666 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-02-15 02:24:36,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 93 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-02-15 02:24:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-15 02:24:36,666 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:36,666 INFO L514 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:36,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-02-15 02:24:36,667 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1728726794, now seen corresponding path program 90 times [2022-02-15 02:24:36,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:36,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585032201] [2022-02-15 02:24:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:36,668 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:36,668 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:24:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:36,668 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:24:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:39,880 INFO 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 02:24:39,880 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:39,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585032201] [2022-02-15 02:24:39,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1585032201] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:39,880 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:39,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-15 02:24:39,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242800495] [2022-02-15 02:24:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:39,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-15 02:24:39,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-15 02:24:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-02-15 02:24:39,882 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 94 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 93 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 02:24:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:43,220 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2022-02-15 02:24:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-15 02:24:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 93 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 02:24:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:43,221 INFO L225 Difference]: With dead ends: 109 [2022-02-15 02:24:43,221 INFO L226 Difference]: Without dead ends: 105 [2022-02-15 02:24:43,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2022-02-15 02:24:43,222 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:43,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:24:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-02-15 02:24:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-02-15 02:24:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.02) internal successors, (102), 101 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 02:24:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2022-02-15 02:24:43,230 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 101 [2022-02-15 02:24:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:43,230 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2022-02-15 02:24:43,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 93 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 02:24:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2022-02-15 02:24:43,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-15 02:24:43,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:43,231 INFO L514 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:43,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-02-15 02:24:43,231 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:43,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:43,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1728677975, now seen corresponding path program 91 times [2022-02-15 02:24:43,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:43,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752959272] [2022-02-15 02:24:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:43,232 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:43,232 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:24:43,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:43,232 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:24:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:46,440 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 02:24:46,440 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:46,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752959272] [2022-02-15 02:24:46,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [752959272] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:46,440 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:46,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-15 02:24:46,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206679528] [2022-02-15 02:24:46,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:46,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-15 02:24:46,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:46,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-15 02:24:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4282, Invalid=4648, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 02:24:46,441 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand has 95 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 94 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 02:24:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:51,534 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2022-02-15 02:24:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 02:24:51,535 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 94 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 02:24:51,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:51,535 INFO L225 Difference]: With dead ends: 112 [2022-02-15 02:24:51,535 INFO L226 Difference]: Without dead ends: 110 [2022-02-15 02:24:51,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4366 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=13022, Invalid=21760, Unknown=0, NotChecked=0, Total=34782 [2022-02-15 02:24:51,537 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:51,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:24:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-15 02:24:51,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2022-02-15 02:24:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 103 states have internal predecessors, (105), 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 02:24:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2022-02-15 02:24:51,546 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 101 [2022-02-15 02:24:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:51,546 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2022-02-15 02:24:51,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 94 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 02:24:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2022-02-15 02:24:51,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-15 02:24:51,546 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:51,546 INFO L514 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:51,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-02-15 02:24:51,547 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2049406602, now seen corresponding path program 91 times [2022-02-15 02:24:51,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:51,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582916175] [2022-02-15 02:24:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:51,547 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:51,548 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:24:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:51,548 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:24:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:54,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:24:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:24:54,837 INFO 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 02:24:54,837 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:24:54,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582916175] [2022-02-15 02:24:54,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1582916175] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:24:54,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:24:54,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-15 02:24:54,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281860194] [2022-02-15 02:24:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:24:54,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-15 02:24:54,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:24:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-15 02:24:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 02:24:54,839 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 95 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 94 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:24:58,353 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2022-02-15 02:24:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 02:24:58,354 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 94 states have internal predecessors, (99), 1 states have call successors, (2), 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 102 [2022-02-15 02:24:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:24:58,354 INFO L225 Difference]: With dead ends: 110 [2022-02-15 02:24:58,354 INFO L226 Difference]: Without dead ends: 106 [2022-02-15 02:24:58,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2022-02-15 02:24:58,355 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:24:58,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:24:58,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-15 02:24:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-02-15 02:24:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 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 02:24:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2022-02-15 02:24:58,368 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 102 [2022-02-15 02:24:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:24:58,368 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2022-02-15 02:24:58,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 94 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:24:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2022-02-15 02:24:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-15 02:24:58,369 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:24:58,369 INFO L514 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:24:58,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-02-15 02:24:58,369 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:24:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:24:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2049357783, now seen corresponding path program 92 times [2022-02-15 02:24:58,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:24:58,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574270059] [2022-02-15 02:24:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:24:58,370 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:24:58,370 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:24:58,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:24:58,371 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:24:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:01,743 INFO 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 02:25:01,743 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:01,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574270059] [2022-02-15 02:25:01,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [574270059] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:01,743 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:01,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-15 02:25:01,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308750469] [2022-02-15 02:25:01,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:01,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-15 02:25:01,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:01,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-15 02:25:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4375, Invalid=4745, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 02:25:01,745 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 96 states, 96 states have (on average 1.03125) internal successors, (99), 95 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:06,958 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2022-02-15 02:25:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-15 02:25:06,959 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.03125) internal successors, (99), 95 states have internal predecessors, (99), 1 states have call successors, (2), 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 102 [2022-02-15 02:25:06,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:06,959 INFO L225 Difference]: With dead ends: 113 [2022-02-15 02:25:06,959 INFO L226 Difference]: Without dead ends: 111 [2022-02-15 02:25:06,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4460 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=13303, Invalid=22229, Unknown=0, NotChecked=0, Total=35532 [2022-02-15 02:25:06,961 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:06,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:25:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-15 02:25:06,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2022-02-15 02:25:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.029126213592233) internal successors, (106), 104 states have internal predecessors, (106), 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 02:25:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2022-02-15 02:25:06,969 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 102 [2022-02-15 02:25:06,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:06,969 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2022-02-15 02:25:06,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.03125) internal successors, (99), 95 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2022-02-15 02:25:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-15 02:25:06,969 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:06,969 INFO L514 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:06,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-02-15 02:25:06,970 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash 894421238, now seen corresponding path program 92 times [2022-02-15 02:25:06,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:06,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059681068] [2022-02-15 02:25:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:06,970 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:25:06,970 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:25:06,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:06,971 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:25:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:10,316 INFO 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 02:25:10,316 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:10,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059681068] [2022-02-15 02:25:10,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2059681068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:10,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:10,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-15 02:25:10,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136641372] [2022-02-15 02:25:10,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:10,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-15 02:25:10,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:10,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-15 02:25:10,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 02:25:10,317 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 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 02:25:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:13,820 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2022-02-15 02:25:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-15 02:25:13,820 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 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 02:25:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:13,821 INFO L225 Difference]: With dead ends: 111 [2022-02-15 02:25:13,821 INFO L226 Difference]: Without dead ends: 107 [2022-02-15 02:25:13,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2022-02-15 02:25:13,822 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:13,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:25:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-15 02:25:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-02-15 02:25:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 103 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 02:25:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2022-02-15 02:25:13,830 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 103 [2022-02-15 02:25:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:13,830 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2022-02-15 02:25:13,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 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 02:25:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2022-02-15 02:25:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-15 02:25:13,830 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:13,830 INFO L514 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:13,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-02-15 02:25:13,831 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:13,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash 894470057, now seen corresponding path program 93 times [2022-02-15 02:25:13,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:13,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681094816] [2022-02-15 02:25:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:13,832 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:25:13,832 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:25:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:13,833 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:25:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:17,205 INFO 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 02:25:17,205 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:17,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681094816] [2022-02-15 02:25:17,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1681094816] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:17,205 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:17,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-15 02:25:17,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703489968] [2022-02-15 02:25:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:17,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-15 02:25:17,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-15 02:25:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4469, Invalid=4843, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 02:25:17,206 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 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 02:25:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:22,518 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2022-02-15 02:25:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-15 02:25:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 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 02:25:22,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:22,519 INFO L225 Difference]: With dead ends: 114 [2022-02-15 02:25:22,519 INFO L226 Difference]: Without dead ends: 112 [2022-02-15 02:25:22,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=13587, Invalid=22703, Unknown=0, NotChecked=0, Total=36290 [2022-02-15 02:25:22,520 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:22,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:25:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-15 02:25:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2022-02-15 02:25:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 105 states have internal predecessors, (107), 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 02:25:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2022-02-15 02:25:22,529 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 103 [2022-02-15 02:25:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:22,529 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2022-02-15 02:25:22,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 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 02:25:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2022-02-15 02:25:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 02:25:22,529 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:22,529 INFO L514 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:22,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-02-15 02:25:22,529 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:22,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1958771062, now seen corresponding path program 93 times [2022-02-15 02:25:22,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:22,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830739083] [2022-02-15 02:25:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:22,530 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:25:22,530 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:25:22,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:22,531 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:25:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:25,947 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:25,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830739083] [2022-02-15 02:25:25,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1830739083] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:25,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:25,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-15 02:25:25,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009043046] [2022-02-15 02:25:25,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:25,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-15 02:25:25,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-15 02:25:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 02:25:25,948 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:29,515 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2022-02-15 02:25:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-15 02:25:29,516 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 1 states have call successors, (2), 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 104 [2022-02-15 02:25:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:29,516 INFO L225 Difference]: With dead ends: 112 [2022-02-15 02:25:29,516 INFO L226 Difference]: Without dead ends: 108 [2022-02-15 02:25:29,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-02-15 02:25:29,517 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:29,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:25:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-15 02:25:29,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-02-15 02:25:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 104 states have internal predecessors, (105), 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 02:25:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2022-02-15 02:25:29,525 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 104 [2022-02-15 02:25:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:29,525 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2022-02-15 02:25:29,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2022-02-15 02:25:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 02:25:29,526 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:29,526 INFO L514 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:29,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-02-15 02:25:29,526 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:29,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1958819881, now seen corresponding path program 94 times [2022-02-15 02:25:29,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:29,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802208360] [2022-02-15 02:25:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:29,527 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:25:29,527 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:25:29,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:29,528 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:25:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:32,968 INFO 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 02:25:32,968 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:32,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802208360] [2022-02-15 02:25:32,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1802208360] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:32,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:32,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-15 02:25:32,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926659904] [2022-02-15 02:25:32,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:32,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-15 02:25:32,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:32,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-15 02:25:32,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4564, Invalid=4942, Unknown=0, NotChecked=0, Total=9506 [2022-02-15 02:25:32,970 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:38,370 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2022-02-15 02:25:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 02:25:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 1 states have call successors, (2), 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 104 [2022-02-15 02:25:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:38,371 INFO L225 Difference]: With dead ends: 115 [2022-02-15 02:25:38,371 INFO L226 Difference]: Without dead ends: 113 [2022-02-15 02:25:38,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4651 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=13874, Invalid=23182, Unknown=0, NotChecked=0, Total=37056 [2022-02-15 02:25:38,372 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:38,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:25:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-15 02:25:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2022-02-15 02:25:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 106 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 02:25:38,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2022-02-15 02:25:38,381 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 104 [2022-02-15 02:25:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:38,381 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2022-02-15 02:25:38,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2022-02-15 02:25:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 02:25:38,382 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:38,382 INFO L514 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:38,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-02-15 02:25:38,382 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash 593877238, now seen corresponding path program 94 times [2022-02-15 02:25:38,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:38,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896562724] [2022-02-15 02:25:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:38,383 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:25:38,383 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:25:38,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:38,384 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:25:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:41,880 INFO 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 02:25:41,880 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:41,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896562724] [2022-02-15 02:25:41,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1896562724] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:41,880 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:41,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-15 02:25:41,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860902884] [2022-02-15 02:25:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:41,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-15 02:25:41,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:41,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-15 02:25:41,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-02-15 02:25:41,881 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 98 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 97 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 02:25:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:45,483 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2022-02-15 02:25:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 02:25:45,483 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 97 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 02:25:45,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:45,483 INFO L225 Difference]: With dead ends: 113 [2022-02-15 02:25:45,483 INFO L226 Difference]: Without dead ends: 109 [2022-02-15 02:25:45,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2022-02-15 02:25:45,485 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:45,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 59 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:25:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-15 02:25:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-02-15 02:25:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 105 states have internal predecessors, (106), 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 02:25:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2022-02-15 02:25:45,493 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 105 [2022-02-15 02:25:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:45,493 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2022-02-15 02:25:45,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 97 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 02:25:45,493 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2022-02-15 02:25:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-15 02:25:45,493 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:45,493 INFO L514 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:45,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-02-15 02:25:45,493 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 593926057, now seen corresponding path program 95 times [2022-02-15 02:25:45,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:45,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433178362] [2022-02-15 02:25:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:45,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:25:45,494 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:25:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:45,495 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:25:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:48,979 INFO 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 02:25:48,979 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:48,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433178362] [2022-02-15 02:25:48,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433178362] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:48,979 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:48,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-15 02:25:48,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374747339] [2022-02-15 02:25:48,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:48,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-15 02:25:48,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:48,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-15 02:25:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4660, Invalid=5042, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:25:48,981 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand has 99 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 98 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 02:25:54,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:25:54,492 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2022-02-15 02:25:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-15 02:25:54,492 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 98 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 02:25:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:25:54,492 INFO L225 Difference]: With dead ends: 116 [2022-02-15 02:25:54,492 INFO L226 Difference]: Without dead ends: 114 [2022-02-15 02:25:54,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4748 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=14164, Invalid=23666, Unknown=0, NotChecked=0, Total=37830 [2022-02-15 02:25:54,494 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:25:54,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:25:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-15 02:25:54,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2022-02-15 02:25:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.028301886792453) internal successors, (109), 107 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:25:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-02-15 02:25:54,502 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 105 [2022-02-15 02:25:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:25:54,502 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-02-15 02:25:54,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 98 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 02:25:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-02-15 02:25:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-15 02:25:54,503 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:25:54,503 INFO L514 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:25:54,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-02-15 02:25:54,503 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:25:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:25:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1231841654, now seen corresponding path program 95 times [2022-02-15 02:25:54,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:25:54,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908018132] [2022-02-15 02:25:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:25:54,504 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:25:54,504 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:25:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:25:54,505 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:25:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:25:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:25:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:25:58,040 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:25:58,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908018132] [2022-02-15 02:25:58,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1908018132] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:25:58,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:25:58,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-15 02:25:58,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735444737] [2022-02-15 02:25:58,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:25:58,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-15 02:25:58,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:25:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-15 02:25:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 02:25:58,042 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 99 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 98 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:01,755 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2022-02-15 02:26:01,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-15 02:26:01,755 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 98 states have internal predecessors, (103), 1 states have call successors, (2), 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 106 [2022-02-15 02:26:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:01,756 INFO L225 Difference]: With dead ends: 114 [2022-02-15 02:26:01,756 INFO L226 Difference]: Without dead ends: 110 [2022-02-15 02:26:01,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-02-15 02:26:01,758 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:01,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 59 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:26:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-15 02:26:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-02-15 02:26:01,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 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 02:26:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2022-02-15 02:26:01,774 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 106 [2022-02-15 02:26:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:01,774 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2022-02-15 02:26:01,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 98 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2022-02-15 02:26:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-15 02:26:01,775 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:01,775 INFO L514 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:01,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-02-15 02:26:01,775 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1231890473, now seen corresponding path program 96 times [2022-02-15 02:26:01,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:01,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538237746] [2022-02-15 02:26:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:01,776 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:26:01,777 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:26:01,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:01,777 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:26:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:05,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:05,320 INFO 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 02:26:05,320 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:05,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538237746] [2022-02-15 02:26:05,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1538237746] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:05,321 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:05,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-15 02:26:05,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614158014] [2022-02-15 02:26:05,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:05,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-15 02:26:05,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:05,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-15 02:26:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=5143, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 02:26:05,323 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 100 states, 100 states have (on average 1.03) internal successors, (103), 99 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:10,947 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2022-02-15 02:26:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-15 02:26:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.03) internal successors, (103), 99 states have internal predecessors, (103), 1 states have call successors, (2), 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 106 [2022-02-15 02:26:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:10,948 INFO L225 Difference]: With dead ends: 117 [2022-02-15 02:26:10,948 INFO L226 Difference]: Without dead ends: 115 [2022-02-15 02:26:10,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4846 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=14457, Invalid=24155, Unknown=0, NotChecked=0, Total=38612 [2022-02-15 02:26:10,950 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:10,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:26:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-15 02:26:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2022-02-15 02:26:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.02803738317757) internal successors, (110), 108 states have internal predecessors, (110), 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 02:26:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-02-15 02:26:10,961 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 106 [2022-02-15 02:26:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:10,961 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-02-15 02:26:10,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.03) internal successors, (103), 99 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-02-15 02:26:10,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-15 02:26:10,962 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:10,962 INFO L514 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:10,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-02-15 02:26:10,962 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash -466097930, now seen corresponding path program 96 times [2022-02-15 02:26:10,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:10,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651325724] [2022-02-15 02:26:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:10,963 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:26:10,963 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:26:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:10,964 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:26:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:14,580 INFO 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 02:26:14,580 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:14,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651325724] [2022-02-15 02:26:14,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1651325724] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:14,580 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:14,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-15 02:26:14,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120433170] [2022-02-15 02:26:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:14,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-15 02:26:14,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:14,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-15 02:26:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 02:26:14,582 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 100 states, 100 states have (on average 1.04) internal successors, (104), 99 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:18,369 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2022-02-15 02:26:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-15 02:26:18,369 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.04) internal successors, (104), 99 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2022-02-15 02:26:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:18,370 INFO L225 Difference]: With dead ends: 115 [2022-02-15 02:26:18,370 INFO L226 Difference]: Without dead ends: 111 [2022-02-15 02:26:18,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2022-02-15 02:26:18,372 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:18,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:26:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-15 02:26:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-02-15 02:26:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 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 02:26:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2022-02-15 02:26:18,381 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 107 [2022-02-15 02:26:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:18,381 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2022-02-15 02:26:18,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.04) internal successors, (104), 99 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2022-02-15 02:26:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-15 02:26:18,381 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:18,381 INFO L514 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:18,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-02-15 02:26:18,381 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash -466049111, now seen corresponding path program 97 times [2022-02-15 02:26:18,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:18,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377369645] [2022-02-15 02:26:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:18,382 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:26:18,382 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:26:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:18,383 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:26:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:22,007 INFO 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 02:26:22,007 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:22,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377369645] [2022-02-15 02:26:22,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1377369645] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:22,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:22,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-15 02:26:22,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095721068] [2022-02-15 02:26:22,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:22,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-15 02:26:22,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:22,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-15 02:26:22,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4855, Invalid=5245, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:26:22,009 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand has 101 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 100 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:27,725 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2022-02-15 02:26:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-15 02:26:27,726 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 100 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2022-02-15 02:26:27,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:27,726 INFO L225 Difference]: With dead ends: 118 [2022-02-15 02:26:27,726 INFO L226 Difference]: Without dead ends: 116 [2022-02-15 02:26:27,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=14753, Invalid=24649, Unknown=0, NotChecked=0, Total=39402 [2022-02-15 02:26:27,728 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:27,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:26:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-02-15 02:26:27,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-02-15 02:26:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 109 states have internal predecessors, (111), 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 02:26:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-02-15 02:26:27,740 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 107 [2022-02-15 02:26:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:27,740 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-02-15 02:26:27,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 100 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-02-15 02:26:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-15 02:26:27,741 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:27,741 INFO L514 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:27,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-02-15 02:26:27,741 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1562617482, now seen corresponding path program 97 times [2022-02-15 02:26:27,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:27,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746581685] [2022-02-15 02:26:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:27,742 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:26:27,742 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:26:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:27,743 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:26:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:31,476 INFO 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 02:26:31,476 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:31,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746581685] [2022-02-15 02:26:31,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [746581685] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:31,476 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:31,476 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-15 02:26:31,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341707993] [2022-02-15 02:26:31,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:31,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-15 02:26:31,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-15 02:26:31,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 02:26:31,478 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 101 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 100 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 02:26:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:35,317 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2022-02-15 02:26:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-15 02:26:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 100 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 02:26:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:35,317 INFO L225 Difference]: With dead ends: 116 [2022-02-15 02:26:35,317 INFO L226 Difference]: Without dead ends: 112 [2022-02-15 02:26:35,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2022-02-15 02:26:35,319 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:35,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 64 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:26:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-15 02:26:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-02-15 02:26:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2022-02-15 02:26:35,330 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 108 [2022-02-15 02:26:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:35,330 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2022-02-15 02:26:35,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 100 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 02:26:35,330 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2022-02-15 02:26:35,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-15 02:26:35,330 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:35,330 INFO L514 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:35,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-02-15 02:26:35,330 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1562568663, now seen corresponding path program 98 times [2022-02-15 02:26:35,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:35,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566752196] [2022-02-15 02:26:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:35,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:26:35,331 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:26:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:35,332 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:26:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:39,022 INFO 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 02:26:39,022 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:39,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566752196] [2022-02-15 02:26:39,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [566752196] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:39,022 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:39,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-15 02:26:39,023 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432621029] [2022-02-15 02:26:39,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:39,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-15 02:26:39,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-15 02:26:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4954, Invalid=5348, Unknown=0, NotChecked=0, Total=10302 [2022-02-15 02:26:39,024 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand has 102 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 101 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 02:26:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:44,863 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2022-02-15 02:26:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-15 02:26:44,863 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 101 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 02:26:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:44,863 INFO L225 Difference]: With dead ends: 119 [2022-02-15 02:26:44,863 INFO L226 Difference]: Without dead ends: 117 [2022-02-15 02:26:44,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=15052, Invalid=25148, Unknown=0, NotChecked=0, Total=40200 [2022-02-15 02:26:44,865 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:44,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:26:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-15 02:26:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2022-02-15 02:26:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 110 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 02:26:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2022-02-15 02:26:44,873 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 108 [2022-02-15 02:26:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:44,873 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2022-02-15 02:26:44,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 101 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 02:26:44,874 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2022-02-15 02:26:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-15 02:26:44,874 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:44,874 INFO L514 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:44,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-02-15 02:26:44,874 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1194985226, now seen corresponding path program 98 times [2022-02-15 02:26:44,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:44,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908030399] [2022-02-15 02:26:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:44,875 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:26:44,875 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:26:44,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:44,876 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:26:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:48,650 INFO 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 02:26:48,650 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:48,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908030399] [2022-02-15 02:26:48,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [908030399] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:48,650 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:48,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-15 02:26:48,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612370907] [2022-02-15 02:26:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:48,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-15 02:26:48,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-15 02:26:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-02-15 02:26:48,651 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 102 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 101 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:52,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:26:52,554 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2022-02-15 02:26:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-15 02:26:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 101 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2022-02-15 02:26:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:26:52,555 INFO L225 Difference]: With dead ends: 117 [2022-02-15 02:26:52,555 INFO L226 Difference]: Without dead ends: 113 [2022-02-15 02:26:52,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2022-02-15 02:26:52,557 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:26:52,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:26:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-15 02:26:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-02-15 02:26:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 109 states have internal predecessors, (110), 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 02:26:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2022-02-15 02:26:52,565 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 109 [2022-02-15 02:26:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:26:52,566 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2022-02-15 02:26:52,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 101 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:26:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2022-02-15 02:26:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-15 02:26:52,566 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:26:52,566 INFO L514 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:26:52,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-02-15 02:26:52,566 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:26:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:26:52,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1194936407, now seen corresponding path program 99 times [2022-02-15 02:26:52,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:26:52,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547999314] [2022-02-15 02:26:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:26:52,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:26:52,569 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:26:52,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:26:52,569 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:26:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:26:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:26:56,323 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 02:26:56,324 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:26:56,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547999314] [2022-02-15 02:26:56,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [547999314] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:26:56,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:26:56,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-15 02:26:56,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215581630] [2022-02-15 02:26:56,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:26:56,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 02:26:56,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:26:56,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 02:26:56,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5054, Invalid=5452, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:26:56,326 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 103 states, 103 states have (on average 1.029126213592233) internal successors, (106), 102 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:02,267 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2022-02-15 02:27:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-15 02:27:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.029126213592233) internal successors, (106), 102 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2022-02-15 02:27:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:02,268 INFO L225 Difference]: With dead ends: 120 [2022-02-15 02:27:02,268 INFO L226 Difference]: Without dead ends: 118 [2022-02-15 02:27:02,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5146 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=15354, Invalid=25652, Unknown=0, NotChecked=0, Total=41006 [2022-02-15 02:27:02,269 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:02,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:27:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-15 02:27:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2022-02-15 02:27:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 111 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 02:27:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2022-02-15 02:27:02,278 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 109 [2022-02-15 02:27:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:02,278 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2022-02-15 02:27:02,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.029126213592233) internal successors, (106), 102 states have internal predecessors, (106), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2022-02-15 02:27:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-15 02:27:02,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:02,278 INFO L514 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:27:02,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-02-15 02:27:02,279 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1611680118, now seen corresponding path program 99 times [2022-02-15 02:27:02,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:02,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877770932] [2022-02-15 02:27:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:02,280 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:27:02,280 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:27:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:02,280 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:27:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:06,187 INFO 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 02:27:06,187 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:06,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877770932] [2022-02-15 02:27:06,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1877770932] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:06,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:06,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-15 02:27:06,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231543624] [2022-02-15 02:27:06,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:06,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 02:27:06,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:06,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 02:27:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 02:27:06,189 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 103 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 102 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:10,152 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2022-02-15 02:27:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-15 02:27:10,152 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 102 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2022-02-15 02:27:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:10,153 INFO L225 Difference]: With dead ends: 118 [2022-02-15 02:27:10,153 INFO L226 Difference]: Without dead ends: 114 [2022-02-15 02:27:10,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-02-15 02:27:10,154 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:10,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:27:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-15 02:27:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-02-15 02:27:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.018348623853211) internal successors, (111), 110 states have internal predecessors, (111), 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 02:27:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2022-02-15 02:27:10,163 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 110 [2022-02-15 02:27:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:10,163 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2022-02-15 02:27:10,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 102 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2022-02-15 02:27:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-15 02:27:10,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:10,163 INFO L514 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:27:10,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-02-15 02:27:10,163 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:10,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1611728937, now seen corresponding path program 100 times [2022-02-15 02:27:10,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:10,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590869938] [2022-02-15 02:27:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:10,164 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:27:10,164 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:27:10,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:10,165 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:27:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:14,008 INFO 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 02:27:14,008 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:14,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590869938] [2022-02-15 02:27:14,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [590869938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:14,008 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:14,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-15 02:27:14,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97059471] [2022-02-15 02:27:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:14,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-15 02:27:14,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-15 02:27:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5155, Invalid=5557, Unknown=0, NotChecked=0, Total=10712 [2022-02-15 02:27:14,010 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 104 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 103 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:20,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:27:20,068 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2022-02-15 02:27:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-15 02:27:20,068 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 103 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2022-02-15 02:27:20,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:27:20,068 INFO L225 Difference]: With dead ends: 121 [2022-02-15 02:27:20,068 INFO L226 Difference]: Without dead ends: 119 [2022-02-15 02:27:20,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5248 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=15659, Invalid=26161, Unknown=0, NotChecked=0, Total=41820 [2022-02-15 02:27:20,070 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:27:20,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:27:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-15 02:27:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2022-02-15 02:27:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.027027027027027) internal successors, (114), 112 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2022-02-15 02:27:20,078 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 110 [2022-02-15 02:27:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:27:20,078 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2022-02-15 02:27:20,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 103 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 02:27:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2022-02-15 02:27:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-15 02:27:20,079 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:27:20,079 INFO L514 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:27:20,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-02-15 02:27:20,079 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:27:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:27:20,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1576007434, now seen corresponding path program 100 times [2022-02-15 02:27:20,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:27:20,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153321967] [2022-02-15 02:27:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:27:20,080 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 02:27:20,080 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-15 02:27:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:27:20,081 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:27:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:27:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:27:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 02:27:23,978 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:27:23,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153321967] [2022-02-15 02:27:23,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153321967] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:27:23,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:27:23,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-15 02:27:23,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126589524] [2022-02-15 02:27:23,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:27:23,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-15 02:27:23,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:27:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-15 02:27:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-02-15 02:27:23,980 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 104 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 103 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)