/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-05ce600 [2022-02-24 01:43:58,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 01:43:58,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 01:43:58,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 01:43:58,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 01:43:58,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 01:43:58,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 01:43:58,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 01:43:58,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 01:43:58,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 01:43:58,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 01:43:58,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 01:43:58,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 01:43:58,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 01:43:58,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 01:43:58,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 01:43:58,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 01:43:58,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 01:43:58,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 01:43:58,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 01:43:58,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 01:43:58,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 01:43:58,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 01:43:58,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 01:43:58,215 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 01:43:58,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 01:43:58,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 01:43:58,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 01:43:58,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 01:43:58,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 01:43:58,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 01:43:58,216 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 01:43:58,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 01:43:58,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 01:43:58,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 01:43:58,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 01:43:58,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 01:43:58,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 01:43:58,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 01:43:58,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:43:58,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 01:43:58,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 01:43:58,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 01:43:58,217 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 01:43:58,217 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 01:43:58,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 01:43:58,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 01:43:58,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 01:43:58,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 01:43:58,408 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 01:43:58,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/linear-inequality-inv-a.c [2022-02-24 01:43:58,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbdaf4ff/634958f9c7b249888b26e549ffe71fa9/FLAGc696ab058 [2022-02-24 01:43:58,774 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 01:43:58,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/linear-inequality-inv-a.c [2022-02-24 01:43:58,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbdaf4ff/634958f9c7b249888b26e549ffe71fa9/FLAGc696ab058 [2022-02-24 01:43:59,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbdaf4ff/634958f9c7b249888b26e549ffe71fa9 [2022-02-24 01:43:59,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 01:43:59,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 01:43:59,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 01:43:59,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 01:43:59,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 01:43:59,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a29f394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59, skipping insertion in model container [2022-02-24 01:43:59,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 01:43:59,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 01:43:59,356 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] [2022-02-24 01:43:59,360 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] [2022-02-24 01:43:59,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:43:59,368 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 01:43:59,378 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] [2022-02-24 01:43:59,379 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] [2022-02-24 01:43:59,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 01:43:59,389 INFO L208 MainTranslator]: Completed translation [2022-02-24 01:43:59,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59 WrapperNode [2022-02-24 01:43:59,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 01:43:59,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 01:43:59,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 01:43:59,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 01:43:59,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 01:43:59,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 01:43:59,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 01:43:59,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 01:43:59,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (1/1) ... [2022-02-24 01:43:59,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 01:43:59,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 01:43:59,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 01:43:59,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 01:43:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 01:43:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 01:43:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 01:43:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 01:43:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 01:43:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 01:43:59,539 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 01:43:59,540 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 01:43:59,621 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 01:43:59,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 01:43:59,625 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 01:43:59,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:43:59 BoogieIcfgContainer [2022-02-24 01:43:59,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 01:43:59,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 01:43:59,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 01:43:59,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 01:43:59,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 01:43:59" (1/3) ... [2022-02-24 01:43:59,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394cf98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:43:59, skipping insertion in model container [2022-02-24 01:43:59,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 01:43:59" (2/3) ... [2022-02-24 01:43:59,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394cf98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 01:43:59, skipping insertion in model container [2022-02-24 01:43:59,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 01:43:59" (3/3) ... [2022-02-24 01:43:59,632 INFO L111 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-a.c [2022-02-24 01:43:59,635 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 01:43:59,635 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-24 01:43:59,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 01:43:59,668 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 [2022-02-24 01:43:59,669 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-24 01:43:59,677 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) [2022-02-24 01:43:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-24 01:43:59,684 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:43:59,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:43:59,685 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:43:59,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:43:59,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1624254505, now seen corresponding path program 1 times [2022-02-24 01:43:59,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:43:59,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456926709] [2022-02-24 01:43:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:43:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:43:59,754 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 01:43:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:43:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:43:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:43:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:43:59,872 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:43:59,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456926709] [2022-02-24 01:43:59,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1456926709] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:43:59,874 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:43:59,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 01:43:59,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172958556] [2022-02-24 01:43:59,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:43:59,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 01:43:59,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:43:59,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 01:43:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 01:43:59,900 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) [2022-02-24 01:43:59,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:43:59,991 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-02-24 01:43:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 01:43:59,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-02-24 01:43:59,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:43:59,999 INFO L225 Difference]: With dead ends: 29 [2022-02-24 01:43:59,999 INFO L226 Difference]: Without dead ends: 15 [2022-02-24 01:44:00,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:44:00,003 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 [2022-02-24 01:44:00,004 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] [2022-02-24 01:44:00,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-24 01:44:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-24 01:44:00,048 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) [2022-02-24 01:44:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-02-24 01:44:00,050 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2022-02-24 01:44:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:00,051 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-02-24 01:44:00,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:44:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-02-24 01:44:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-24 01:44:00,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:00,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:00,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 01:44:00,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:00,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1187666007, now seen corresponding path program 1 times [2022-02-24 01:44:00,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:00,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316022788] [2022-02-24 01:44:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:00,084 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:00,084 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:00,084 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:00,158 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:00,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316022788] [2022-02-24 01:44:00,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1316022788] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:00,158 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:00,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 01:44:00,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360610995] [2022-02-24 01:44:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:00,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 01:44:00,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 01:44:00,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:44:00,160 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) [2022-02-24 01:44:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:00,241 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-02-24 01:44:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 01:44:00,242 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 [2022-02-24 01:44:00,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:00,242 INFO L225 Difference]: With dead ends: 22 [2022-02-24 01:44:00,243 INFO L226 Difference]: Without dead ends: 20 [2022-02-24 01:44:00,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:44:00,244 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 [2022-02-24 01:44:00,244 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] [2022-02-24 01:44:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-24 01:44:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-02-24 01:44:00,249 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) [2022-02-24 01:44:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-02-24 01:44:00,249 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2022-02-24 01:44:00,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:00,250 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-02-24 01:44:00,266 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) [2022-02-24 01:44:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-02-24 01:44:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-24 01:44:00,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:00,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:00,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 01:44:00,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:00,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1837062518, now seen corresponding path program 1 times [2022-02-24 01:44:00,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:00,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322142842] [2022-02-24 01:44:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:00,270 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:00,270 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:00,271 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:00,325 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:00,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322142842] [2022-02-24 01:44:00,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1322142842] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:00,325 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:00,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 01:44:00,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75507152] [2022-02-24 01:44:00,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:00,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 01:44:00,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:00,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 01:44:00,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 01:44:00,327 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) [2022-02-24 01:44:00,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:00,356 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-02-24 01:44:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 01:44:00,356 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 [2022-02-24 01:44:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:00,357 INFO L225 Difference]: With dead ends: 20 [2022-02-24 01:44:00,357 INFO L226 Difference]: Without dead ends: 16 [2022-02-24 01:44:00,357 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 [2022-02-24 01:44:00,358 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 [2022-02-24 01:44:00,358 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] [2022-02-24 01:44:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-02-24 01:44:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-02-24 01:44:00,362 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) [2022-02-24 01:44:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-02-24 01:44:00,363 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2022-02-24 01:44:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:00,363 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-02-24 01:44:00,363 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) [2022-02-24 01:44:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-02-24 01:44:00,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-24 01:44:00,363 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:00,363 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:00,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 01:44:00,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1837111337, now seen corresponding path program 2 times [2022-02-24 01:44:00,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:00,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600544166] [2022-02-24 01:44:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:00,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:00,367 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:00,367 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:00,367 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:00,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:00,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600544166] [2022-02-24 01:44:00,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1600544166] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:00,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:00,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 01:44:00,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158805993] [2022-02-24 01:44:00,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:00,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 01:44:00,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 01:44:00,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-24 01:44:00,464 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) [2022-02-24 01:44:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:00,550 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-02-24 01:44:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 01:44:00,551 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 [2022-02-24 01:44:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:00,552 INFO L225 Difference]: With dead ends: 23 [2022-02-24 01:44:00,552 INFO L226 Difference]: Without dead ends: 21 [2022-02-24 01:44:00,555 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 [2022-02-24 01:44:00,555 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 [2022-02-24 01:44:00,556 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] [2022-02-24 01:44:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-24 01:44:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-02-24 01:44:00,559 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) [2022-02-24 01:44:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-02-24 01:44:00,560 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2022-02-24 01:44:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:00,560 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-02-24 01:44:00,560 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) [2022-02-24 01:44:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-02-24 01:44:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-24 01:44:00,561 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:00,561 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:00,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 01:44:00,561 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:00,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:00,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1115879670, now seen corresponding path program 2 times [2022-02-24 01:44:00,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:00,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633595055] [2022-02-24 01:44:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:00,569 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:00,569 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:00,569 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:00,642 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:00,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633595055] [2022-02-24 01:44:00,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [633595055] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:00,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:00,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-24 01:44:00,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270087206] [2022-02-24 01:44:00,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:00,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-24 01:44:00,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:00,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-24 01:44:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-24 01:44:00,644 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) [2022-02-24 01:44:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:00,681 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-02-24 01:44:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-24 01:44:00,681 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 [2022-02-24 01:44:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:00,682 INFO L225 Difference]: With dead ends: 21 [2022-02-24 01:44:00,682 INFO L226 Difference]: Without dead ends: 17 [2022-02-24 01:44:00,682 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 [2022-02-24 01:44:00,683 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 [2022-02-24 01:44:00,683 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] [2022-02-24 01:44:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-24 01:44:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-24 01:44:00,686 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) [2022-02-24 01:44:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-02-24 01:44:00,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2022-02-24 01:44:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:00,686 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-02-24 01:44:00,686 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) [2022-02-24 01:44:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-02-24 01:44:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-24 01:44:00,687 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:00,687 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:00,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 01:44:00,687 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:00,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1115928489, now seen corresponding path program 3 times [2022-02-24 01:44:00,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:00,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769182652] [2022-02-24 01:44:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:00,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:00,690 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:00,690 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:00,690 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:00,758 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:00,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769182652] [2022-02-24 01:44:00,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1769182652] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:00,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:00,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 01:44:00,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514822277] [2022-02-24 01:44:00,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:00,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 01:44:00,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:00,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 01:44:00,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:44:00,760 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) [2022-02-24 01:44:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:00,837 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-02-24 01:44:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 01:44:00,838 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 [2022-02-24 01:44:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:00,838 INFO L225 Difference]: With dead ends: 24 [2022-02-24 01:44:00,838 INFO L226 Difference]: Without dead ends: 22 [2022-02-24 01:44:00,838 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 [2022-02-24 01:44:00,839 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 [2022-02-24 01:44:00,839 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] [2022-02-24 01:44:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-24 01:44:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-02-24 01:44:00,842 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) [2022-02-24 01:44:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-02-24 01:44:00,843 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2022-02-24 01:44:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:00,843 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-02-24 01:44:00,843 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) [2022-02-24 01:44:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-02-24 01:44:00,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-24 01:44:00,844 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:00,844 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:00,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 01:44:00,844 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash 234047862, now seen corresponding path program 3 times [2022-02-24 01:44:00,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:00,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900231970] [2022-02-24 01:44:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:00,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:00,846 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:00,846 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:00,847 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:00,909 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:00,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900231970] [2022-02-24 01:44:00,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [900231970] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:00,909 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:00,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-24 01:44:00,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759868926] [2022-02-24 01:44:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:00,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 01:44:00,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 01:44:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-24 01:44:00,910 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) [2022-02-24 01:44:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:00,960 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-02-24 01:44:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 01:44:00,960 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 [2022-02-24 01:44:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:00,961 INFO L225 Difference]: With dead ends: 22 [2022-02-24 01:44:00,961 INFO L226 Difference]: Without dead ends: 18 [2022-02-24 01:44:00,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-02-24 01:44:00,962 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 [2022-02-24 01:44:00,962 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] [2022-02-24 01:44:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-24 01:44:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-24 01:44:00,965 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) [2022-02-24 01:44:00,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-02-24 01:44:00,966 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-02-24 01:44:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:00,966 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-02-24 01:44:00,966 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) [2022-02-24 01:44:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-02-24 01:44:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-24 01:44:00,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:00,967 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:00,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 01:44:00,967 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:00,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:00,967 INFO L85 PathProgramCache]: Analyzing trace with hash 234096681, now seen corresponding path program 4 times [2022-02-24 01:44:00,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:00,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487102091] [2022-02-24 01:44:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:00,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:00,977 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:00,977 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:00,977 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:01,042 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:01,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487102091] [2022-02-24 01:44:01,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [487102091] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:01,042 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:01,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 01:44:01,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407645816] [2022-02-24 01:44:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:01,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 01:44:01,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 01:44:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-24 01:44:01,043 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) [2022-02-24 01:44:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:01,140 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-02-24 01:44:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 01:44:01,141 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 [2022-02-24 01:44:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:01,141 INFO L225 Difference]: With dead ends: 25 [2022-02-24 01:44:01,141 INFO L226 Difference]: Without dead ends: 23 [2022-02-24 01:44:01,142 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 [2022-02-24 01:44:01,142 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 [2022-02-24 01:44:01,142 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] [2022-02-24 01:44:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-24 01:44:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2022-02-24 01:44:01,146 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) [2022-02-24 01:44:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-02-24 01:44:01,146 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2022-02-24 01:44:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:01,146 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-02-24 01:44:01,147 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) [2022-02-24 01:44:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-02-24 01:44:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-24 01:44:01,147 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:01,147 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:01,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 01:44:01,147 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1332934410, now seen corresponding path program 4 times [2022-02-24 01:44:01,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:01,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599765075] [2022-02-24 01:44:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:01,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:01,150 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:01,150 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:01,150 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:01,218 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:01,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599765075] [2022-02-24 01:44:01,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [599765075] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:01,218 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:01,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 01:44:01,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225628681] [2022-02-24 01:44:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:01,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 01:44:01,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:01,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 01:44:01,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-24 01:44:01,220 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) [2022-02-24 01:44:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:01,273 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-02-24 01:44:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 01:44:01,273 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 [2022-02-24 01:44:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:01,274 INFO L225 Difference]: With dead ends: 23 [2022-02-24 01:44:01,274 INFO L226 Difference]: Without dead ends: 19 [2022-02-24 01:44:01,274 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 [2022-02-24 01:44:01,275 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 [2022-02-24 01:44:01,275 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] [2022-02-24 01:44:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-02-24 01:44:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-02-24 01:44:01,278 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) [2022-02-24 01:44:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-02-24 01:44:01,279 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2022-02-24 01:44:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:01,279 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-02-24 01:44:01,279 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) [2022-02-24 01:44:01,279 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-02-24 01:44:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-24 01:44:01,279 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:01,279 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:01,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 01:44:01,280 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1332885591, now seen corresponding path program 5 times [2022-02-24 01:44:01,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:01,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074903697] [2022-02-24 01:44:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:01,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:01,282 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:01,282 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:01,282 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:01,351 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:01,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074903697] [2022-02-24 01:44:01,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1074903697] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:01,351 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:01,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 01:44:01,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464021809] [2022-02-24 01:44:01,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:01,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 01:44:01,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 01:44:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-24 01:44:01,352 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) [2022-02-24 01:44:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:01,468 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-02-24 01:44:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 01:44:01,468 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 [2022-02-24 01:44:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:01,469 INFO L225 Difference]: With dead ends: 26 [2022-02-24 01:44:01,469 INFO L226 Difference]: Without dead ends: 24 [2022-02-24 01:44:01,469 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 [2022-02-24 01:44:01,470 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 [2022-02-24 01:44:01,470 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] [2022-02-24 01:44:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-24 01:44:01,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-02-24 01:44:01,473 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) [2022-02-24 01:44:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-02-24 01:44:01,473 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2022-02-24 01:44:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:01,473 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-02-24 01:44:01,474 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) [2022-02-24 01:44:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-02-24 01:44:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-24 01:44:01,474 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:01,474 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:01,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 01:44:01,474 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:01,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1630222710, now seen corresponding path program 5 times [2022-02-24 01:44:01,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:01,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798056615] [2022-02-24 01:44:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:01,477 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:01,477 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:01,477 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:01,557 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:01,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798056615] [2022-02-24 01:44:01,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [798056615] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:01,558 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:01,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 01:44:01,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435562913] [2022-02-24 01:44:01,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:01,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 01:44:01,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 01:44:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-24 01:44:01,559 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) [2022-02-24 01:44:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:01,632 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-02-24 01:44:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 01:44:01,632 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 [2022-02-24 01:44:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:01,633 INFO L225 Difference]: With dead ends: 24 [2022-02-24 01:44:01,633 INFO L226 Difference]: Without dead ends: 20 [2022-02-24 01:44:01,633 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 [2022-02-24 01:44:01,634 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 [2022-02-24 01:44:01,634 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] [2022-02-24 01:44:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-02-24 01:44:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-02-24 01:44:01,636 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) [2022-02-24 01:44:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-02-24 01:44:01,637 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 16 [2022-02-24 01:44:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:01,637 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-02-24 01:44:01,637 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) [2022-02-24 01:44:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-02-24 01:44:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-24 01:44:01,637 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:01,638 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:01,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 01:44:01,638 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:01,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1630271529, now seen corresponding path program 6 times [2022-02-24 01:44:01,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:01,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223265562] [2022-02-24 01:44:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:01,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:01,640 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:01,640 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:01,640 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:01,717 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:01,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223265562] [2022-02-24 01:44:01,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [223265562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:01,717 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:01,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 01:44:01,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236796203] [2022-02-24 01:44:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:01,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 01:44:01,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 01:44:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-24 01:44:01,718 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) [2022-02-24 01:44:01,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:01,857 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-02-24 01:44:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 01:44:01,858 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 [2022-02-24 01:44:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:01,858 INFO L225 Difference]: With dead ends: 27 [2022-02-24 01:44:01,858 INFO L226 Difference]: Without dead ends: 25 [2022-02-24 01:44:01,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2022-02-24 01:44:01,859 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 [2022-02-24 01:44:01,859 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] [2022-02-24 01:44:01,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-24 01:44:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-02-24 01:44:01,862 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) [2022-02-24 01:44:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-02-24 01:44:01,863 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2022-02-24 01:44:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:01,863 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-02-24 01:44:01,863 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) [2022-02-24 01:44:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-02-24 01:44:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-24 01:44:01,863 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:01,863 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:01,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 01:44:01,864 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1001187082, now seen corresponding path program 6 times [2022-02-24 01:44:01,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:01,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475608442] [2022-02-24 01:44:01,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:01,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:01,866 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:01,866 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:01,866 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:01,967 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:01,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475608442] [2022-02-24 01:44:01,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1475608442] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:01,967 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:01,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 01:44:01,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867107391] [2022-02-24 01:44:01,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:01,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 01:44:01,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 01:44:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-02-24 01:44:01,968 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) [2022-02-24 01:44:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:02,052 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-02-24 01:44:02,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-24 01:44:02,053 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 [2022-02-24 01:44:02,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:02,053 INFO L225 Difference]: With dead ends: 25 [2022-02-24 01:44:02,053 INFO L226 Difference]: Without dead ends: 21 [2022-02-24 01:44:02,053 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 [2022-02-24 01:44:02,054 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 [2022-02-24 01:44:02,054 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] [2022-02-24 01:44:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-24 01:44:02,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-02-24 01:44:02,057 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) [2022-02-24 01:44:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-02-24 01:44:02,057 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-02-24 01:44:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:02,057 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-02-24 01:44:02,058 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) [2022-02-24 01:44:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-02-24 01:44:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-24 01:44:02,058 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:02,058 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:02,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 01:44:02,058 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:02,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1001138263, now seen corresponding path program 7 times [2022-02-24 01:44:02,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:02,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530371675] [2022-02-24 01:44:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:02,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:02,060 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:02,060 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:02,061 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:02,149 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:02,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530371675] [2022-02-24 01:44:02,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1530371675] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:02,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:02,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 01:44:02,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488626006] [2022-02-24 01:44:02,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:02,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 01:44:02,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:02,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 01:44:02,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-24 01:44:02,150 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) [2022-02-24 01:44:02,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:02,299 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-02-24 01:44:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 01:44:02,299 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 [2022-02-24 01:44:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:02,300 INFO L225 Difference]: With dead ends: 28 [2022-02-24 01:44:02,300 INFO L226 Difference]: Without dead ends: 26 [2022-02-24 01:44:02,300 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 [2022-02-24 01:44:02,300 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 [2022-02-24 01:44:02,301 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] [2022-02-24 01:44:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-24 01:44:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-02-24 01:44:02,304 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) [2022-02-24 01:44:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-02-24 01:44:02,304 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2022-02-24 01:44:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:02,304 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-02-24 01:44:02,304 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) [2022-02-24 01:44:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-02-24 01:44:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-24 01:44:02,304 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:02,305 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:02,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 01:44:02,305 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash -970512010, now seen corresponding path program 7 times [2022-02-24 01:44:02,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:02,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424246386] [2022-02-24 01:44:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:02,307 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:02,307 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:02,307 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:02,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:02,407 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:02,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424246386] [2022-02-24 01:44:02,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [424246386] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:02,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:02,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 01:44:02,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730629216] [2022-02-24 01:44:02,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:02,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 01:44:02,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 01:44:02,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-02-24 01:44:02,408 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) [2022-02-24 01:44:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:02,498 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-02-24 01:44:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-24 01:44:02,498 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 [2022-02-24 01:44:02,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:02,498 INFO L225 Difference]: With dead ends: 26 [2022-02-24 01:44:02,498 INFO L226 Difference]: Without dead ends: 22 [2022-02-24 01:44:02,499 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 [2022-02-24 01:44:02,499 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 [2022-02-24 01:44:02,499 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] [2022-02-24 01:44:02,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-24 01:44:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-02-24 01:44:02,502 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) [2022-02-24 01:44:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-02-24 01:44:02,502 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2022-02-24 01:44:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:02,502 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-02-24 01:44:02,503 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) [2022-02-24 01:44:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-02-24 01:44:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-24 01:44:02,503 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:02,503 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:02,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 01:44:02,503 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:02,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash -970463191, now seen corresponding path program 8 times [2022-02-24 01:44:02,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:02,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980629147] [2022-02-24 01:44:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:02,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:02,505 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:02,505 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:02,505 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:02,618 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:02,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980629147] [2022-02-24 01:44:02,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [980629147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:02,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:02,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 01:44:02,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887271883] [2022-02-24 01:44:02,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:02,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 01:44:02,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 01:44:02,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-02-24 01:44:02,619 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) [2022-02-24 01:44:02,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:02,782 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-02-24 01:44:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 01:44:02,782 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 [2022-02-24 01:44:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:02,783 INFO L225 Difference]: With dead ends: 29 [2022-02-24 01:44:02,783 INFO L226 Difference]: Without dead ends: 27 [2022-02-24 01:44:02,783 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 [2022-02-24 01:44:02,783 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:02,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-24 01:44:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-02-24 01:44:02,786 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) [2022-02-24 01:44:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-02-24 01:44:02,787 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2022-02-24 01:44:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:02,787 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-02-24 01:44:02,787 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) [2022-02-24 01:44:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-02-24 01:44:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-24 01:44:02,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:02,787 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:02,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 01:44:02,788 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:02,788 INFO L85 PathProgramCache]: Analyzing trace with hash -19584778, now seen corresponding path program 8 times [2022-02-24 01:44:02,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:02,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146236966] [2022-02-24 01:44:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:02,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:02,790 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:02,790 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:02,790 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:02,903 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:02,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146236966] [2022-02-24 01:44:02,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2146236966] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:02,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:02,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 01:44:02,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412552548] [2022-02-24 01:44:02,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:02,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 01:44:02,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 01:44:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-02-24 01:44:02,905 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) [2022-02-24 01:44:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:03,029 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-02-24 01:44:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-24 01:44:03,029 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 [2022-02-24 01:44:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:03,030 INFO L225 Difference]: With dead ends: 27 [2022-02-24 01:44:03,030 INFO L226 Difference]: Without dead ends: 23 [2022-02-24 01:44:03,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-02-24 01:44:03,030 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 [2022-02-24 01:44:03,030 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] [2022-02-24 01:44:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-24 01:44:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-24 01:44:03,033 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) [2022-02-24 01:44:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-02-24 01:44:03,034 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2022-02-24 01:44:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:03,034 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-02-24 01:44:03,034 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) [2022-02-24 01:44:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-02-24 01:44:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-24 01:44:03,034 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:03,034 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:03,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 01:44:03,034 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash -19535959, now seen corresponding path program 9 times [2022-02-24 01:44:03,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:03,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966827086] [2022-02-24 01:44:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:03,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:03,037 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:03,037 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:03,037 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:03,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:03,173 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:03,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966827086] [2022-02-24 01:44:03,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [966827086] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:03,173 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:03,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 01:44:03,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334355094] [2022-02-24 01:44:03,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:03,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 01:44:03,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 01:44:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-02-24 01:44:03,174 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) [2022-02-24 01:44:03,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:03,356 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-02-24 01:44:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 01:44:03,357 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 [2022-02-24 01:44:03,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:03,357 INFO L225 Difference]: With dead ends: 30 [2022-02-24 01:44:03,357 INFO L226 Difference]: Without dead ends: 28 [2022-02-24 01:44:03,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=317, Unknown=0, NotChecked=0, Total=506 [2022-02-24 01:44:03,358 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 [2022-02-24 01:44:03,358 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] [2022-02-24 01:44:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-24 01:44:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-02-24 01:44:03,361 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) [2022-02-24 01:44:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-02-24 01:44:03,361 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2022-02-24 01:44:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:03,361 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-02-24 01:44:03,361 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) [2022-02-24 01:44:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-02-24 01:44:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 01:44:03,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:03,362 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:03,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 01:44:03,362 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash -605611658, now seen corresponding path program 9 times [2022-02-24 01:44:03,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:03,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295612243] [2022-02-24 01:44:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:03,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:03,364 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:03,364 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:03,364 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:03,479 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:03,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295612243] [2022-02-24 01:44:03,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1295612243] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:03,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:03,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 01:44:03,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942532121] [2022-02-24 01:44:03,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:03,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 01:44:03,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 01:44:03,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-02-24 01:44:03,481 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) [2022-02-24 01:44:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:03,599 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-02-24 01:44:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-24 01:44:03,599 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 [2022-02-24 01:44:03,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:03,600 INFO L225 Difference]: With dead ends: 28 [2022-02-24 01:44:03,600 INFO L226 Difference]: Without dead ends: 24 [2022-02-24 01:44:03,600 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 [2022-02-24 01:44:03,600 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 [2022-02-24 01:44:03,601 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] [2022-02-24 01:44:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-24 01:44:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-24 01:44:03,603 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) [2022-02-24 01:44:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-02-24 01:44:03,604 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2022-02-24 01:44:03,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:03,604 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-02-24 01:44:03,604 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) [2022-02-24 01:44:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-02-24 01:44:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-24 01:44:03,604 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:03,604 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:03,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 01:44:03,604 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -605562839, now seen corresponding path program 10 times [2022-02-24 01:44:03,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:03,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292121268] [2022-02-24 01:44:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:03,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:03,606 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:03,607 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:03,607 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:03,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:03,726 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:03,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292121268] [2022-02-24 01:44:03,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [292121268] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:03,726 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:03,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 01:44:03,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316026170] [2022-02-24 01:44:03,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:03,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 01:44:03,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 01:44:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-02-24 01:44:03,727 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) [2022-02-24 01:44:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:03,924 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-02-24 01:44:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 01:44:03,925 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 [2022-02-24 01:44:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:03,925 INFO L225 Difference]: With dead ends: 31 [2022-02-24 01:44:03,925 INFO L226 Difference]: Without dead ends: 29 [2022-02-24 01:44:03,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=376, Unknown=0, NotChecked=0, Total=600 [2022-02-24 01:44:03,926 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 [2022-02-24 01:44:03,926 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] [2022-02-24 01:44:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-24 01:44:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-02-24 01:44:03,929 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) [2022-02-24 01:44:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-02-24 01:44:03,929 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2022-02-24 01:44:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:03,929 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-02-24 01:44:03,929 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) [2022-02-24 01:44:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-02-24 01:44:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-24 01:44:03,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:03,930 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:03,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 01:44:03,930 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1592575754, now seen corresponding path program 10 times [2022-02-24 01:44:03,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:03,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576815773] [2022-02-24 01:44:03,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:03,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:03,932 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:03,932 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:03,932 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:04,061 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:04,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576815773] [2022-02-24 01:44:04,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1576815773] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:04,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:04,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 01:44:04,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098945535] [2022-02-24 01:44:04,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:04,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 01:44:04,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 01:44:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-02-24 01:44:04,063 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) [2022-02-24 01:44:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:04,186 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-02-24 01:44:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-24 01:44:04,186 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 [2022-02-24 01:44:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:04,186 INFO L225 Difference]: With dead ends: 29 [2022-02-24 01:44:04,186 INFO L226 Difference]: Without dead ends: 25 [2022-02-24 01:44:04,187 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 [2022-02-24 01:44:04,187 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 [2022-02-24 01:44:04,187 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] [2022-02-24 01:44:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-24 01:44:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-02-24 01:44:04,190 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) [2022-02-24 01:44:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-02-24 01:44:04,190 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 21 [2022-02-24 01:44:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:04,190 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-02-24 01:44:04,190 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) [2022-02-24 01:44:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-02-24 01:44:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-24 01:44:04,191 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:04,191 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:04,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 01:44:04,191 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1592526935, now seen corresponding path program 11 times [2022-02-24 01:44:04,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:04,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535552994] [2022-02-24 01:44:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:04,193 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:04,193 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:04,193 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:04,341 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:04,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535552994] [2022-02-24 01:44:04,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1535552994] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:04,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:04,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 01:44:04,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41894733] [2022-02-24 01:44:04,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:04,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 01:44:04,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 01:44:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-02-24 01:44:04,342 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) [2022-02-24 01:44:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:04,561 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-02-24 01:44:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 01:44:04,561 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 [2022-02-24 01:44:04,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:04,561 INFO L225 Difference]: With dead ends: 32 [2022-02-24 01:44:04,562 INFO L226 Difference]: Without dead ends: 30 [2022-02-24 01:44:04,562 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 [2022-02-24 01:44:04,562 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 [2022-02-24 01:44:04,562 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] [2022-02-24 01:44:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-24 01:44:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-02-24 01:44:04,565 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) [2022-02-24 01:44:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-02-24 01:44:04,565 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 21 [2022-02-24 01:44:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:04,566 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-02-24 01:44:04,566 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) [2022-02-24 01:44:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-02-24 01:44:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-24 01:44:04,566 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:04,566 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:04,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 01:44:04,566 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:04,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2123691658, now seen corresponding path program 11 times [2022-02-24 01:44:04,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:04,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523726345] [2022-02-24 01:44:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:04,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:04,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:04,568 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:04,569 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:04,712 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:04,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523726345] [2022-02-24 01:44:04,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [523726345] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:04,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:04,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 01:44:04,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511067834] [2022-02-24 01:44:04,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:04,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 01:44:04,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:04,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 01:44:04,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-02-24 01:44:04,713 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) [2022-02-24 01:44:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:04,846 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-02-24 01:44:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 01:44:04,846 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 [2022-02-24 01:44:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:04,846 INFO L225 Difference]: With dead ends: 30 [2022-02-24 01:44:04,847 INFO L226 Difference]: Without dead ends: 26 [2022-02-24 01:44:04,847 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 [2022-02-24 01:44:04,847 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 [2022-02-24 01:44:04,848 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] [2022-02-24 01:44:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-24 01:44:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-24 01:44:04,850 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) [2022-02-24 01:44:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-02-24 01:44:04,851 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2022-02-24 01:44:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:04,851 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-02-24 01:44:04,851 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) [2022-02-24 01:44:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-02-24 01:44:04,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-24 01:44:04,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:04,851 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:04,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 01:44:04,852 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2123642839, now seen corresponding path program 12 times [2022-02-24 01:44:04,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:04,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520992831] [2022-02-24 01:44:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:04,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:04,853 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:04,853 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:04,854 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:05,038 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:05,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520992831] [2022-02-24 01:44:05,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [520992831] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:05,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:05,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 01:44:05,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963341706] [2022-02-24 01:44:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:05,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 01:44:05,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:05,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 01:44:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2022-02-24 01:44:05,039 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) [2022-02-24 01:44:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:05,283 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-02-24 01:44:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 01:44:05,283 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 [2022-02-24 01:44:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:05,284 INFO L225 Difference]: With dead ends: 33 [2022-02-24 01:44:05,284 INFO L226 Difference]: Without dead ends: 31 [2022-02-24 01:44:05,284 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 [2022-02-24 01:44:05,285 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 [2022-02-24 01:44:05,285 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] [2022-02-24 01:44:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-24 01:44:05,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-02-24 01:44:05,289 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) [2022-02-24 01:44:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-02-24 01:44:05,289 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2022-02-24 01:44:05,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:05,289 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-02-24 01:44:05,289 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) [2022-02-24 01:44:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-02-24 01:44:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-24 01:44:05,289 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:05,290 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:05,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 01:44:05,290 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:05,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:05,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1408415498, now seen corresponding path program 12 times [2022-02-24 01:44:05,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:05,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021086884] [2022-02-24 01:44:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:05,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:05,292 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:05,292 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:05,292 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:05,487 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:05,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021086884] [2022-02-24 01:44:05,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1021086884] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:05,487 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:05,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 01:44:05,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654837820] [2022-02-24 01:44:05,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:05,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 01:44:05,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:05,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 01:44:05,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-02-24 01:44:05,488 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) [2022-02-24 01:44:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:05,649 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-02-24 01:44:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-24 01:44:05,649 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 [2022-02-24 01:44:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:05,649 INFO L225 Difference]: With dead ends: 31 [2022-02-24 01:44:05,649 INFO L226 Difference]: Without dead ends: 27 [2022-02-24 01:44:05,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-02-24 01:44:05,650 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 [2022-02-24 01:44:05,650 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] [2022-02-24 01:44:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-24 01:44:05,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-24 01:44:05,653 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) [2022-02-24 01:44:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-02-24 01:44:05,654 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2022-02-24 01:44:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:05,654 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-02-24 01:44:05,654 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) [2022-02-24 01:44:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-02-24 01:44:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-24 01:44:05,654 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:05,654 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:05,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 01:44:05,655 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1408366679, now seen corresponding path program 13 times [2022-02-24 01:44:05,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:05,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409379804] [2022-02-24 01:44:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:05,657 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:05,657 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:05,657 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:05,819 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:05,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409379804] [2022-02-24 01:44:05,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1409379804] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:05,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:05,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 01:44:05,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546156603] [2022-02-24 01:44:05,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:05,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 01:44:05,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:05,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 01:44:05,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2022-02-24 01:44:05,820 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) [2022-02-24 01:44:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:06,094 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-02-24 01:44:06,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 01:44:06,095 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 [2022-02-24 01:44:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:06,095 INFO L225 Difference]: With dead ends: 34 [2022-02-24 01:44:06,095 INFO L226 Difference]: Without dead ends: 32 [2022-02-24 01:44:06,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=583, Unknown=0, NotChecked=0, Total=930 [2022-02-24 01:44:06,096 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 [2022-02-24 01:44:06,096 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] [2022-02-24 01:44:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-24 01:44:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-02-24 01:44:06,099 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) [2022-02-24 01:44:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-02-24 01:44:06,099 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2022-02-24 01:44:06,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:06,099 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-02-24 01:44:06,099 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) [2022-02-24 01:44:06,099 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-02-24 01:44:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-24 01:44:06,099 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:06,099 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:06,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 01:44:06,100 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -709691018, now seen corresponding path program 13 times [2022-02-24 01:44:06,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:06,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392153523] [2022-02-24 01:44:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:06,102 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:06,102 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:06,102 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:06,271 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:06,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392153523] [2022-02-24 01:44:06,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [392153523] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:06,271 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:06,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 01:44:06,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917444594] [2022-02-24 01:44:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:06,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 01:44:06,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 01:44:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-02-24 01:44:06,272 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) [2022-02-24 01:44:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:06,430 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-02-24 01:44:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 01:44:06,430 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 [2022-02-24 01:44:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:06,431 INFO L225 Difference]: With dead ends: 32 [2022-02-24 01:44:06,431 INFO L226 Difference]: Without dead ends: 28 [2022-02-24 01:44:06,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-02-24 01:44:06,431 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 [2022-02-24 01:44:06,432 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] [2022-02-24 01:44:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-24 01:44:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-02-24 01:44:06,434 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) [2022-02-24 01:44:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-02-24 01:44:06,435 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 24 [2022-02-24 01:44:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:06,435 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-02-24 01:44:06,435 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) [2022-02-24 01:44:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-02-24 01:44:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-24 01:44:06,435 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:06,435 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:06,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 01:44:06,435 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:06,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash -709642199, now seen corresponding path program 14 times [2022-02-24 01:44:06,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:06,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510786932] [2022-02-24 01:44:06,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:06,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:06,437 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:06,437 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:06,437 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:06,625 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:06,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510786932] [2022-02-24 01:44:06,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [510786932] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:06,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:06,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 01:44:06,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897604406] [2022-02-24 01:44:06,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:06,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 01:44:06,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:06,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 01:44:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2022-02-24 01:44:06,626 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) [2022-02-24 01:44:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:06,923 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-02-24 01:44:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 01:44:06,923 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 [2022-02-24 01:44:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:06,924 INFO L225 Difference]: With dead ends: 35 [2022-02-24 01:44:06,924 INFO L226 Difference]: Without dead ends: 33 [2022-02-24 01:44:06,924 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 [2022-02-24 01:44:06,925 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:06,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-24 01:44:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-02-24 01:44:06,928 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) [2022-02-24 01:44:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-02-24 01:44:06,928 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2022-02-24 01:44:06,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:06,928 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-02-24 01:44:06,929 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) [2022-02-24 01:44:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-02-24 01:44:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-24 01:44:06,929 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:06,929 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:06,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 01:44:06,929 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash -524068618, now seen corresponding path program 14 times [2022-02-24 01:44:06,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:06,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613508615] [2022-02-24 01:44:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:06,931 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:06,931 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:06,931 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:07,120 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:07,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613508615] [2022-02-24 01:44:07,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [613508615] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:07,120 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:07,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 01:44:07,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872434838] [2022-02-24 01:44:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:07,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 01:44:07,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 01:44:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-02-24 01:44:07,121 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) [2022-02-24 01:44:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:07,307 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-02-24 01:44:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 01:44:07,307 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 [2022-02-24 01:44:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:07,307 INFO L225 Difference]: With dead ends: 33 [2022-02-24 01:44:07,307 INFO L226 Difference]: Without dead ends: 29 [2022-02-24 01:44:07,308 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 [2022-02-24 01:44:07,308 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 [2022-02-24 01:44:07,308 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] [2022-02-24 01:44:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-24 01:44:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-24 01:44:07,311 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) [2022-02-24 01:44:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-02-24 01:44:07,311 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 25 [2022-02-24 01:44:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:07,311 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-02-24 01:44:07,311 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) [2022-02-24 01:44:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-02-24 01:44:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-24 01:44:07,311 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:07,311 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:07,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 01:44:07,312 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash -524019799, now seen corresponding path program 15 times [2022-02-24 01:44:07,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:07,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389278886] [2022-02-24 01:44:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:07,313 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:07,313 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:07,314 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:07,505 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:07,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389278886] [2022-02-24 01:44:07,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1389278886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:07,505 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:07,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 01:44:07,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972059924] [2022-02-24 01:44:07,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:07,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 01:44:07,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 01:44:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2022-02-24 01:44:07,506 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) [2022-02-24 01:44:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:07,744 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-02-24 01:44:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 01:44:07,744 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 [2022-02-24 01:44:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:07,745 INFO L225 Difference]: With dead ends: 36 [2022-02-24 01:44:07,745 INFO L226 Difference]: Without dead ends: 34 [2022-02-24 01:44:07,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=444, Invalid=746, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 01:44:07,746 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 [2022-02-24 01:44:07,746 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] [2022-02-24 01:44:07,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-24 01:44:07,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-02-24 01:44:07,749 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) [2022-02-24 01:44:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-02-24 01:44:07,749 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2022-02-24 01:44:07,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:07,750 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-02-24 01:44:07,750 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) [2022-02-24 01:44:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-02-24 01:44:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-24 01:44:07,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:07,750 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:07,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 01:44:07,751 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 935258486, now seen corresponding path program 15 times [2022-02-24 01:44:07,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:07,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449535469] [2022-02-24 01:44:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:07,755 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:07,755 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:07,755 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:07,965 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:07,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449535469] [2022-02-24 01:44:07,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1449535469] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:07,966 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:07,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 01:44:07,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493781843] [2022-02-24 01:44:07,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:07,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 01:44:07,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 01:44:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-02-24 01:44:07,967 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) [2022-02-24 01:44:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:08,150 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-02-24 01:44:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 01:44:08,150 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 [2022-02-24 01:44:08,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:08,151 INFO L225 Difference]: With dead ends: 34 [2022-02-24 01:44:08,151 INFO L226 Difference]: Without dead ends: 30 [2022-02-24 01:44:08,151 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 [2022-02-24 01:44:08,151 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 [2022-02-24 01:44:08,152 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] [2022-02-24 01:44:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-24 01:44:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-02-24 01:44:08,156 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) [2022-02-24 01:44:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-02-24 01:44:08,156 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2022-02-24 01:44:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:08,156 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-02-24 01:44:08,156 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) [2022-02-24 01:44:08,156 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-02-24 01:44:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-24 01:44:08,157 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:08,157 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:08,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 01:44:08,157 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash 935307305, now seen corresponding path program 16 times [2022-02-24 01:44:08,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:08,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545498947] [2022-02-24 01:44:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:08,173 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:08,174 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:08,174 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:08,403 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:08,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545498947] [2022-02-24 01:44:08,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1545498947] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:08,403 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:08,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 01:44:08,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28960084] [2022-02-24 01:44:08,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:08,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 01:44:08,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 01:44:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2022-02-24 01:44:08,404 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) [2022-02-24 01:44:08,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:08,760 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-02-24 01:44:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 01:44:08,760 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 [2022-02-24 01:44:08,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:08,760 INFO L225 Difference]: With dead ends: 37 [2022-02-24 01:44:08,761 INFO L226 Difference]: Without dead ends: 35 [2022-02-24 01:44:08,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=497, Invalid=835, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 01:44:08,761 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:08,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-24 01:44:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-02-24 01:44:08,774 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) [2022-02-24 01:44:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-02-24 01:44:08,774 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 26 [2022-02-24 01:44:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:08,774 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-02-24 01:44:08,774 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) [2022-02-24 01:44:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-02-24 01:44:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-24 01:44:08,775 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:08,775 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:08,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 01:44:08,775 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1070241546, now seen corresponding path program 16 times [2022-02-24 01:44:08,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:08,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429234730] [2022-02-24 01:44:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:08,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:08,777 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:08,777 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:08,777 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:08,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:08,999 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:08,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429234730] [2022-02-24 01:44:08,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1429234730] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:08,999 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:08,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 01:44:08,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275646788] [2022-02-24 01:44:08,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:08,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 01:44:08,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:09,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 01:44:09,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-02-24 01:44:09,000 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) [2022-02-24 01:44:09,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:09,209 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-02-24 01:44:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 01:44:09,209 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 [2022-02-24 01:44:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:09,209 INFO L225 Difference]: With dead ends: 35 [2022-02-24 01:44:09,209 INFO L226 Difference]: Without dead ends: 31 [2022-02-24 01:44:09,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 01:44:09,210 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 [2022-02-24 01:44:09,210 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] [2022-02-24 01:44:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-24 01:44:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-24 01:44:09,213 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) [2022-02-24 01:44:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-02-24 01:44:09,213 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2022-02-24 01:44:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:09,213 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-02-24 01:44:09,213 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) [2022-02-24 01:44:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-02-24 01:44:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-24 01:44:09,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:09,214 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:09,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 01:44:09,214 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:09,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:09,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1070192727, now seen corresponding path program 17 times [2022-02-24 01:44:09,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:09,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760248636] [2022-02-24 01:44:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:09,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:09,216 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:09,216 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:09,216 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:09,431 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:09,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760248636] [2022-02-24 01:44:09,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1760248636] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:09,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:09,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 01:44:09,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250265474] [2022-02-24 01:44:09,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:09,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 01:44:09,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 01:44:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2022-02-24 01:44:09,432 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) [2022-02-24 01:44:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:09,815 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-02-24 01:44:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 01:44:09,815 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 [2022-02-24 01:44:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:09,815 INFO L225 Difference]: With dead ends: 38 [2022-02-24 01:44:09,815 INFO L226 Difference]: Without dead ends: 36 [2022-02-24 01:44:09,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=553, Invalid=929, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 01:44:09,816 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:09,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-24 01:44:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-02-24 01:44:09,819 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) [2022-02-24 01:44:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-02-24 01:44:09,819 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 27 [2022-02-24 01:44:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:09,819 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-02-24 01:44:09,819 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) [2022-02-24 01:44:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-02-24 01:44:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-24 01:44:09,820 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:09,820 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:09,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 01:44:09,820 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:09,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1183766902, now seen corresponding path program 17 times [2022-02-24 01:44:09,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:09,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697484778] [2022-02-24 01:44:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:09,822 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:09,822 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:09,822 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:10,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:10,053 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:10,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697484778] [2022-02-24 01:44:10,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1697484778] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:10,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:10,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 01:44:10,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782363664] [2022-02-24 01:44:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:10,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 01:44:10,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:10,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 01:44:10,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-02-24 01:44:10,054 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) [2022-02-24 01:44:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:10,282 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-02-24 01:44:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 01:44:10,282 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 [2022-02-24 01:44:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:10,282 INFO L225 Difference]: With dead ends: 36 [2022-02-24 01:44:10,282 INFO L226 Difference]: Without dead ends: 32 [2022-02-24 01:44:10,283 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 [2022-02-24 01:44:10,283 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 [2022-02-24 01:44:10,283 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] [2022-02-24 01:44:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-24 01:44:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-02-24 01:44:10,286 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) [2022-02-24 01:44:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2022-02-24 01:44:10,286 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 28 [2022-02-24 01:44:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:10,286 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2022-02-24 01:44:10,286 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) [2022-02-24 01:44:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2022-02-24 01:44:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-24 01:44:10,287 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:10,287 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:10,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-24 01:44:10,287 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:10,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1183815721, now seen corresponding path program 18 times [2022-02-24 01:44:10,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:10,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247511555] [2022-02-24 01:44:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:10,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:10,289 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:10,289 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:10,289 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:10,577 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:10,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247511555] [2022-02-24 01:44:10,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [247511555] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:10,577 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:10,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 01:44:10,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665168063] [2022-02-24 01:44:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:10,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 01:44:10,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:10,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 01:44:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2022-02-24 01:44:10,578 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) [2022-02-24 01:44:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:10,993 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-02-24 01:44:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 01:44:10,993 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 [2022-02-24 01:44:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:10,993 INFO L225 Difference]: With dead ends: 39 [2022-02-24 01:44:10,993 INFO L226 Difference]: Without dead ends: 37 [2022-02-24 01:44:10,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=612, Invalid=1028, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 01:44:10,994 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 [2022-02-24 01:44:10,994 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] [2022-02-24 01:44:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-24 01:44:10,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2022-02-24 01:44:10,997 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) [2022-02-24 01:44:10,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-02-24 01:44:10,997 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 28 [2022-02-24 01:44:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:10,997 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-02-24 01:44:10,997 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) [2022-02-24 01:44:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-02-24 01:44:10,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-24 01:44:10,997 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:10,998 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:10,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-24 01:44:10,998 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:10,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1956415242, now seen corresponding path program 18 times [2022-02-24 01:44:10,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:10,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125314102] [2022-02-24 01:44:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:10,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:11,002 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:11,002 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:11,002 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:11,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:11,268 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:11,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125314102] [2022-02-24 01:44:11,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2125314102] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:11,268 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:11,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 01:44:11,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177070658] [2022-02-24 01:44:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:11,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 01:44:11,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 01:44:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-02-24 01:44:11,269 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) [2022-02-24 01:44:11,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:11,442 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-02-24 01:44:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 01:44:11,442 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 [2022-02-24 01:44:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:11,442 INFO L225 Difference]: With dead ends: 37 [2022-02-24 01:44:11,442 INFO L226 Difference]: Without dead ends: 33 [2022-02-24 01:44:11,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 01:44:11,443 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:11,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-24 01:44:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-24 01:44:11,447 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) [2022-02-24 01:44:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-02-24 01:44:11,447 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2022-02-24 01:44:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:11,448 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-02-24 01:44:11,448 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) [2022-02-24 01:44:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-02-24 01:44:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-24 01:44:11,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:11,448 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:11,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-24 01:44:11,448 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1956366423, now seen corresponding path program 19 times [2022-02-24 01:44:11,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:11,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902135285] [2022-02-24 01:44:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:11,452 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:11,452 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:11,452 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:11,673 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:11,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902135285] [2022-02-24 01:44:11,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [902135285] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:11,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:11,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 01:44:11,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214570160] [2022-02-24 01:44:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:11,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 01:44:11,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 01:44:11,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2022-02-24 01:44:11,675 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) [2022-02-24 01:44:12,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:12,159 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-02-24 01:44:12,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 01:44:12,160 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 [2022-02-24 01:44:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:12,160 INFO L225 Difference]: With dead ends: 40 [2022-02-24 01:44:12,160 INFO L226 Difference]: Without dead ends: 38 [2022-02-24 01:44:12,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=674, Invalid=1132, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 01:44:12,161 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:12,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-02-24 01:44:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-02-24 01:44:12,164 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) [2022-02-24 01:44:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-02-24 01:44:12,164 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 29 [2022-02-24 01:44:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:12,164 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-02-24 01:44:12,164 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) [2022-02-24 01:44:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-02-24 01:44:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-24 01:44:12,165 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:12,165 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:12,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-24 01:44:12,165 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash -517813898, now seen corresponding path program 19 times [2022-02-24 01:44:12,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:12,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978411857] [2022-02-24 01:44:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:12,167 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:12,167 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:12,167 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:12,433 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:12,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978411857] [2022-02-24 01:44:12,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1978411857] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:12,433 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:12,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 01:44:12,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090530449] [2022-02-24 01:44:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:12,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 01:44:12,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:12,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 01:44:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-02-24 01:44:12,434 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) [2022-02-24 01:44:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:12,689 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-02-24 01:44:12,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 01:44:12,689 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 [2022-02-24 01:44:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:12,690 INFO L225 Difference]: With dead ends: 38 [2022-02-24 01:44:12,690 INFO L226 Difference]: Without dead ends: 34 [2022-02-24 01:44:12,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 01:44:12,691 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:12,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-24 01:44:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-02-24 01:44:12,694 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) [2022-02-24 01:44:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-02-24 01:44:12,694 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 30 [2022-02-24 01:44:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:12,694 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-02-24 01:44:12,694 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) [2022-02-24 01:44:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-02-24 01:44:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-24 01:44:12,695 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:12,695 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:12,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-24 01:44:12,695 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:12,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash -517765079, now seen corresponding path program 20 times [2022-02-24 01:44:12,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:12,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360407647] [2022-02-24 01:44:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:12,697 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:12,697 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:12,697 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:12,970 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:12,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360407647] [2022-02-24 01:44:12,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1360407647] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:12,970 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:12,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 01:44:12,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079931122] [2022-02-24 01:44:12,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:12,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 01:44:12,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 01:44:12,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2022-02-24 01:44:12,972 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) [2022-02-24 01:44:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:13,487 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2022-02-24 01:44:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 01:44:13,487 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 [2022-02-24 01:44:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:13,488 INFO L225 Difference]: With dead ends: 41 [2022-02-24 01:44:13,488 INFO L226 Difference]: Without dead ends: 39 [2022-02-24 01:44:13,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=739, Invalid=1241, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 01:44:13,489 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-02-24 01:44:13,489 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] [2022-02-24 01:44:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-24 01:44:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-02-24 01:44:13,492 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) [2022-02-24 01:44:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-02-24 01:44:13,492 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2022-02-24 01:44:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:13,492 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-02-24 01:44:13,492 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) [2022-02-24 01:44:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-02-24 01:44:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-24 01:44:13,492 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:13,492 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:13,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-24 01:44:13,493 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:13,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1129154806, now seen corresponding path program 20 times [2022-02-24 01:44:13,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:13,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635532607] [2022-02-24 01:44:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:13,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:13,494 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:13,495 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:13,794 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:13,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635532607] [2022-02-24 01:44:13,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1635532607] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:13,794 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:13,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 01:44:13,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267577831] [2022-02-24 01:44:13,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:13,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 01:44:13,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:13,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 01:44:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-02-24 01:44:13,795 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) [2022-02-24 01:44:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:14,082 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-02-24 01:44:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 01:44:14,083 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 [2022-02-24 01:44:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:14,083 INFO L225 Difference]: With dead ends: 39 [2022-02-24 01:44:14,083 INFO L226 Difference]: Without dead ends: 35 [2022-02-24 01:44:14,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 01:44:14,084 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 [2022-02-24 01:44:14,084 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] [2022-02-24 01:44:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-24 01:44:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-02-24 01:44:14,087 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) [2022-02-24 01:44:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-02-24 01:44:14,088 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 31 [2022-02-24 01:44:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:14,088 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-02-24 01:44:14,088 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) [2022-02-24 01:44:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-02-24 01:44:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-24 01:44:14,088 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:14,088 INFO L514 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:14,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-24 01:44:14,088 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:14,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1129203625, now seen corresponding path program 21 times [2022-02-24 01:44:14,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:14,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440386381] [2022-02-24 01:44:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:14,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:14,090 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:14,090 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:14,090 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:14,408 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:14,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440386381] [2022-02-24 01:44:14,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [440386381] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:14,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:14,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 01:44:14,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169306797] [2022-02-24 01:44:14,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:14,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 01:44:14,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:14,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 01:44:14,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2022-02-24 01:44:14,409 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) [2022-02-24 01:44:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:14,906 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-02-24 01:44:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 01:44:14,906 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 [2022-02-24 01:44:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:14,907 INFO L225 Difference]: With dead ends: 42 [2022-02-24 01:44:14,907 INFO L226 Difference]: Without dead ends: 40 [2022-02-24 01:44:14,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=807, Invalid=1355, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 01:44:14,908 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:14,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-02-24 01:44:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-02-24 01:44:14,911 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) [2022-02-24 01:44:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2022-02-24 01:44:14,911 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 31 [2022-02-24 01:44:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:14,911 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2022-02-24 01:44:14,911 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) [2022-02-24 01:44:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2022-02-24 01:44:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-24 01:44:14,911 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:14,912 INFO L514 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:14,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-24 01:44:14,912 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash 645577078, now seen corresponding path program 21 times [2022-02-24 01:44:14,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:14,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623194537] [2022-02-24 01:44:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:14,914 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:14,914 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:14,914 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:15,254 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:15,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623194537] [2022-02-24 01:44:15,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1623194537] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:15,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:15,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 01:44:15,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949788273] [2022-02-24 01:44:15,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:15,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 01:44:15,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:15,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 01:44:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-02-24 01:44:15,255 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) [2022-02-24 01:44:15,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:15,535 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-02-24 01:44:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 01:44:15,535 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 [2022-02-24 01:44:15,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:15,542 INFO L225 Difference]: With dead ends: 40 [2022-02-24 01:44:15,542 INFO L226 Difference]: Without dead ends: 36 [2022-02-24 01:44:15,542 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 [2022-02-24 01:44:15,543 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 25 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, 25 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:15,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-24 01:44:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-02-24 01:44:15,546 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) [2022-02-24 01:44:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-02-24 01:44:15,546 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 32 [2022-02-24 01:44:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:15,546 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-02-24 01:44:15,547 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) [2022-02-24 01:44:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-02-24 01:44:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-24 01:44:15,547 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:15,547 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:15,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-24 01:44:15,547 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 645625897, now seen corresponding path program 22 times [2022-02-24 01:44:15,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:15,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626431096] [2022-02-24 01:44:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:15,549 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:15,549 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:15,549 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:15,899 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:15,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626431096] [2022-02-24 01:44:15,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1626431096] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:15,899 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:15,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 01:44:15,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447871507] [2022-02-24 01:44:15,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:15,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 01:44:15,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 01:44:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2022-02-24 01:44:15,900 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) [2022-02-24 01:44:16,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:16,291 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2022-02-24 01:44:16,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 01:44:16,292 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 [2022-02-24 01:44:16,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:16,292 INFO L225 Difference]: With dead ends: 43 [2022-02-24 01:44:16,292 INFO L226 Difference]: Without dead ends: 41 [2022-02-24 01:44:16,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=878, Invalid=1474, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 01:44:16,293 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:16,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-24 01:44:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-02-24 01:44:16,296 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) [2022-02-24 01:44:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2022-02-24 01:44:16,297 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 32 [2022-02-24 01:44:16,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:16,297 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2022-02-24 01:44:16,297 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) [2022-02-24 01:44:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2022-02-24 01:44:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-24 01:44:16,297 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:16,297 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:16,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-24 01:44:16,297 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1460430602, now seen corresponding path program 22 times [2022-02-24 01:44:16,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:16,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880811077] [2022-02-24 01:44:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:16,299 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:16,299 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:16,299 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:16,637 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:16,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880811077] [2022-02-24 01:44:16,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1880811077] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:16,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:16,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 01:44:16,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676879814] [2022-02-24 01:44:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:16,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 01:44:16,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 01:44:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-02-24 01:44:16,638 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) [2022-02-24 01:44:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:16,952 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2022-02-24 01:44:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 01:44:16,952 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 [2022-02-24 01:44:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:16,952 INFO L225 Difference]: With dead ends: 41 [2022-02-24 01:44:16,952 INFO L226 Difference]: Without dead ends: 37 [2022-02-24 01:44:16,953 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 [2022-02-24 01:44:16,953 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 [2022-02-24 01:44:16,954 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] [2022-02-24 01:44:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-24 01:44:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-02-24 01:44:16,956 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) [2022-02-24 01:44:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-02-24 01:44:16,957 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 33 [2022-02-24 01:44:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:16,957 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-02-24 01:44:16,957 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) [2022-02-24 01:44:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-02-24 01:44:16,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-24 01:44:16,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:16,957 INFO L514 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:16,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-24 01:44:16,957 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:16,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1460381783, now seen corresponding path program 23 times [2022-02-24 01:44:16,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:16,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251079977] [2022-02-24 01:44:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:16,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:16,959 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:16,959 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:16,959 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:17,203 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:17,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251079977] [2022-02-24 01:44:17,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [251079977] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:17,203 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:17,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 01:44:17,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819495060] [2022-02-24 01:44:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:17,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 01:44:17,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 01:44:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-02-24 01:44:17,205 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) [2022-02-24 01:44:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:17,598 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-02-24 01:44:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 01:44:17,599 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 [2022-02-24 01:44:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:17,599 INFO L225 Difference]: With dead ends: 44 [2022-02-24 01:44:17,603 INFO L226 Difference]: Without dead ends: 42 [2022-02-24 01:44:17,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=952, Invalid=1598, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 01:44:17,604 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:17,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-24 01:44:17,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2022-02-24 01:44:17,608 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) [2022-02-24 01:44:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-02-24 01:44:17,608 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 33 [2022-02-24 01:44:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:17,608 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-02-24 01:44:17,608 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) [2022-02-24 01:44:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-02-24 01:44:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-24 01:44:17,609 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:17,609 INFO L514 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:17,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-24 01:44:17,609 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:17,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1972808054, now seen corresponding path program 23 times [2022-02-24 01:44:17,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:17,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684692175] [2022-02-24 01:44:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:17,611 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:17,611 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:17,611 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:17,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:17,857 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:17,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684692175] [2022-02-24 01:44:17,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [684692175] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:17,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:17,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 01:44:17,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244531082] [2022-02-24 01:44:17,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:17,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 01:44:17,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:17,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 01:44:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-02-24 01:44:17,858 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) [2022-02-24 01:44:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:18,086 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-02-24 01:44:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 01:44:18,086 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 [2022-02-24 01:44:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:18,087 INFO L225 Difference]: With dead ends: 42 [2022-02-24 01:44:18,087 INFO L226 Difference]: Without dead ends: 38 [2022-02-24 01:44:18,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 01:44:18,087 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 [2022-02-24 01:44:18,088 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] [2022-02-24 01:44:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-02-24 01:44:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-02-24 01:44:18,091 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) [2022-02-24 01:44:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-02-24 01:44:18,091 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 34 [2022-02-24 01:44:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:18,092 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-02-24 01:44:18,092 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) [2022-02-24 01:44:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-02-24 01:44:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-24 01:44:18,092 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:18,092 INFO L514 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:18,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-24 01:44:18,092 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1972856873, now seen corresponding path program 24 times [2022-02-24 01:44:18,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:18,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936549478] [2022-02-24 01:44:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:18,094 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:18,094 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:18,094 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:18,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:18,451 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:18,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936549478] [2022-02-24 01:44:18,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1936549478] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:18,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:18,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 01:44:18,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266486762] [2022-02-24 01:44:18,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:18,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 01:44:18,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 01:44:18,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2022-02-24 01:44:18,452 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) [2022-02-24 01:44:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:19,040 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2022-02-24 01:44:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 01:44:19,041 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 [2022-02-24 01:44:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:19,041 INFO L225 Difference]: With dead ends: 45 [2022-02-24 01:44:19,041 INFO L226 Difference]: Without dead ends: 43 [2022-02-24 01:44:19,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1029, Invalid=1727, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 01:44:19,042 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:19,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-24 01:44:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2022-02-24 01:44:19,045 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) [2022-02-24 01:44:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-02-24 01:44:19,045 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 34 [2022-02-24 01:44:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:19,046 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-02-24 01:44:19,046 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) [2022-02-24 01:44:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-02-24 01:44:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-24 01:44:19,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:19,046 INFO L514 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:19,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-24 01:44:19,046 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:19,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1029023990, now seen corresponding path program 24 times [2022-02-24 01:44:19,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:19,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479408761] [2022-02-24 01:44:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:19,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:19,048 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:19,048 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:19,048 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:19,416 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:19,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479408761] [2022-02-24 01:44:19,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1479408761] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:19,416 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:19,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 01:44:19,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198907958] [2022-02-24 01:44:19,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:19,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 01:44:19,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 01:44:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-02-24 01:44:19,417 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) [2022-02-24 01:44:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:19,746 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2022-02-24 01:44:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 01:44:19,746 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 [2022-02-24 01:44:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:19,747 INFO L225 Difference]: With dead ends: 43 [2022-02-24 01:44:19,747 INFO L226 Difference]: Without dead ends: 39 [2022-02-24 01:44:19,749 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 [2022-02-24 01:44:19,750 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 [2022-02-24 01:44:19,750 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] [2022-02-24 01:44:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-24 01:44:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-24 01:44:19,754 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) [2022-02-24 01:44:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2022-02-24 01:44:19,754 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 35 [2022-02-24 01:44:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:19,754 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2022-02-24 01:44:19,754 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) [2022-02-24 01:44:19,754 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2022-02-24 01:44:19,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-24 01:44:19,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:19,755 INFO L514 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:19,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-24 01:44:19,756 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1029072809, now seen corresponding path program 25 times [2022-02-24 01:44:19,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:19,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79065466] [2022-02-24 01:44:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:19,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:19,758 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:19,758 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:19,758 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:20,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:20,170 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:20,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79065466] [2022-02-24 01:44:20,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [79065466] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:20,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:20,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 01:44:20,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004499126] [2022-02-24 01:44:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:20,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 01:44:20,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 01:44:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2022-02-24 01:44:20,171 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) [2022-02-24 01:44:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:20,818 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-02-24 01:44:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 01:44:20,819 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 [2022-02-24 01:44:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:20,819 INFO L225 Difference]: With dead ends: 46 [2022-02-24 01:44:20,819 INFO L226 Difference]: Without dead ends: 44 [2022-02-24 01:44:20,820 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 [2022-02-24 01:44:20,820 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 [2022-02-24 01:44:20,820 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] [2022-02-24 01:44:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-24 01:44:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-02-24 01:44:20,823 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) [2022-02-24 01:44:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-02-24 01:44:20,824 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 35 [2022-02-24 01:44:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:20,824 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-02-24 01:44:20,824 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) [2022-02-24 01:44:20,824 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-02-24 01:44:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-24 01:44:20,824 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:20,824 INFO L514 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:20,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-24 01:44:20,824 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1836489078, now seen corresponding path program 25 times [2022-02-24 01:44:20,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:20,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108394147] [2022-02-24 01:44:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:20,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:20,827 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:20,827 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:20,827 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:21,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:21,256 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:21,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108394147] [2022-02-24 01:44:21,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2108394147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:21,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:21,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 01:44:21,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498443079] [2022-02-24 01:44:21,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:21,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 01:44:21,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:21,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 01:44:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-02-24 01:44:21,257 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) [2022-02-24 01:44:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:21,585 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-02-24 01:44:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 01:44:21,585 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 [2022-02-24 01:44:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:21,586 INFO L225 Difference]: With dead ends: 44 [2022-02-24 01:44:21,586 INFO L226 Difference]: Without dead ends: 40 [2022-02-24 01:44:21,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 01:44:21,587 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:21,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-02-24 01:44:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-02-24 01:44:21,590 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) [2022-02-24 01:44:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2022-02-24 01:44:21,590 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 36 [2022-02-24 01:44:21,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:21,590 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2022-02-24 01:44:21,590 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) [2022-02-24 01:44:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2022-02-24 01:44:21,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-24 01:44:21,591 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:21,591 INFO L514 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:21,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-24 01:44:21,591 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1836537897, now seen corresponding path program 26 times [2022-02-24 01:44:21,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:21,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74460560] [2022-02-24 01:44:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:21,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:21,593 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:21,593 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:21,593 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:21,983 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:21,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74460560] [2022-02-24 01:44:21,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [74460560] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:21,984 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:21,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 01:44:21,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118223067] [2022-02-24 01:44:21,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:21,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 01:44:21,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:21,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 01:44:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2022-02-24 01:44:21,985 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) [2022-02-24 01:44:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:22,554 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-02-24 01:44:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 01:44:22,554 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 [2022-02-24 01:44:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:22,555 INFO L225 Difference]: With dead ends: 47 [2022-02-24 01:44:22,555 INFO L226 Difference]: Without dead ends: 45 [2022-02-24 01:44:22,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1192, Invalid=2000, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 01:44:22,557 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 [2022-02-24 01:44:22,558 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] [2022-02-24 01:44:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-24 01:44:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2022-02-24 01:44:22,561 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) [2022-02-24 01:44:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-02-24 01:44:22,562 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 36 [2022-02-24 01:44:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:22,562 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-02-24 01:44:22,562 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) [2022-02-24 01:44:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-02-24 01:44:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-24 01:44:22,563 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:22,563 INFO L514 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:22,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-24 01:44:22,563 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:22,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1098103030, now seen corresponding path program 26 times [2022-02-24 01:44:22,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:22,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132205289] [2022-02-24 01:44:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:22,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:22,582 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:22,582 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:22,582 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:23,060 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:23,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132205289] [2022-02-24 01:44:23,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2132205289] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:23,060 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:23,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 01:44:23,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178190548] [2022-02-24 01:44:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:23,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 01:44:23,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:23,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 01:44:23,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-02-24 01:44:23,061 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) [2022-02-24 01:44:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:23,479 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2022-02-24 01:44:23,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 01:44:23,479 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 [2022-02-24 01:44:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:23,480 INFO L225 Difference]: With dead ends: 45 [2022-02-24 01:44:23,480 INFO L226 Difference]: Without dead ends: 41 [2022-02-24 01:44:23,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 01:44:23,480 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 [2022-02-24 01:44:23,480 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] [2022-02-24 01:44:23,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-24 01:44:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-02-24 01:44:23,484 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) [2022-02-24 01:44:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-02-24 01:44:23,484 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 37 [2022-02-24 01:44:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:23,484 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-02-24 01:44:23,484 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) [2022-02-24 01:44:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-02-24 01:44:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-24 01:44:23,484 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:23,484 INFO L514 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:23,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-24 01:44:23,485 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:23,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1098151849, now seen corresponding path program 27 times [2022-02-24 01:44:23,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:23,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190836566] [2022-02-24 01:44:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:23,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:23,487 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:23,487 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:23,487 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:23,811 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:23,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190836566] [2022-02-24 01:44:23,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [190836566] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:23,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:23,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 01:44:23,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392904236] [2022-02-24 01:44:23,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:23,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 01:44:23,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:23,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 01:44:23,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2022-02-24 01:44:23,812 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) [2022-02-24 01:44:24,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:24,321 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-02-24 01:44:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 01:44:24,321 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 [2022-02-24 01:44:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:24,322 INFO L225 Difference]: With dead ends: 48 [2022-02-24 01:44:24,322 INFO L226 Difference]: Without dead ends: 46 [2022-02-24 01:44:24,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1278, Invalid=2144, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 01:44:24,337 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:24,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-24 01:44:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-02-24 01:44:24,355 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) [2022-02-24 01:44:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2022-02-24 01:44:24,355 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 37 [2022-02-24 01:44:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:24,355 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2022-02-24 01:44:24,356 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) [2022-02-24 01:44:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2022-02-24 01:44:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-24 01:44:24,356 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:24,356 INFO L514 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:24,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-24 01:44:24,356 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:24,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash -317027978, now seen corresponding path program 27 times [2022-02-24 01:44:24,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:24,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396745376] [2022-02-24 01:44:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:24,358 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:24,358 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:24,358 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:24,791 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:24,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396745376] [2022-02-24 01:44:24,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1396745376] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:24,791 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:24,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 01:44:24,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365401108] [2022-02-24 01:44:24,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:24,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 01:44:24,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 01:44:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-02-24 01:44:24,792 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) [2022-02-24 01:44:25,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:25,227 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-02-24 01:44:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 01:44:25,227 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 [2022-02-24 01:44:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:25,228 INFO L225 Difference]: With dead ends: 46 [2022-02-24 01:44:25,228 INFO L226 Difference]: Without dead ends: 42 [2022-02-24 01:44:25,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 01:44:25,229 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:25,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-24 01:44:25,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-02-24 01:44:25,232 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) [2022-02-24 01:44:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2022-02-24 01:44:25,233 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 38 [2022-02-24 01:44:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:25,233 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2022-02-24 01:44:25,233 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) [2022-02-24 01:44:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2022-02-24 01:44:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-24 01:44:25,233 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:25,233 INFO L514 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:25,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-24 01:44:25,233 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash -316979159, now seen corresponding path program 28 times [2022-02-24 01:44:25,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:25,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137131952] [2022-02-24 01:44:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:25,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:25,235 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:25,235 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:25,235 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:25,670 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:25,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137131952] [2022-02-24 01:44:25,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2137131952] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:25,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:25,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-24 01:44:25,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486286967] [2022-02-24 01:44:25,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:25,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-24 01:44:25,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-24 01:44:25,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2022-02-24 01:44:25,671 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) [2022-02-24 01:44:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:26,348 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-02-24 01:44:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 01:44:26,349 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 [2022-02-24 01:44:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:26,349 INFO L225 Difference]: With dead ends: 49 [2022-02-24 01:44:26,349 INFO L226 Difference]: Without dead ends: 47 [2022-02-24 01:44:26,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1367, Invalid=2293, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 01:44:26,350 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-02-24 01:44:26,350 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] [2022-02-24 01:44:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-24 01:44:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2022-02-24 01:44:26,354 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) [2022-02-24 01:44:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2022-02-24 01:44:26,354 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 38 [2022-02-24 01:44:26,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:26,354 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2022-02-24 01:44:26,354 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) [2022-02-24 01:44:26,354 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2022-02-24 01:44:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-24 01:44:26,355 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:26,355 INFO L514 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:26,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-24 01:44:26,355 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:26,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:26,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1236416266, now seen corresponding path program 28 times [2022-02-24 01:44:26,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:26,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471079120] [2022-02-24 01:44:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:26,357 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:26,357 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:26,357 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:26,878 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:26,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471079120] [2022-02-24 01:44:26,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1471079120] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:26,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:26,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-24 01:44:26,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239909270] [2022-02-24 01:44:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:26,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-24 01:44:26,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-24 01:44:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-02-24 01:44:26,879 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) [2022-02-24 01:44:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:27,311 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-02-24 01:44:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 01:44:27,312 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 [2022-02-24 01:44:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:27,313 INFO L225 Difference]: With dead ends: 47 [2022-02-24 01:44:27,313 INFO L226 Difference]: Without dead ends: 43 [2022-02-24 01:44:27,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 01:44:27,316 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:27,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-24 01:44:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-02-24 01:44:27,320 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) [2022-02-24 01:44:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2022-02-24 01:44:27,320 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 39 [2022-02-24 01:44:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:27,320 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2022-02-24 01:44:27,320 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) [2022-02-24 01:44:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2022-02-24 01:44:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-24 01:44:27,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:27,320 INFO L514 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:27,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-24 01:44:27,321 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1236367447, now seen corresponding path program 29 times [2022-02-24 01:44:27,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:27,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520916111] [2022-02-24 01:44:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:27,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:27,323 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:27,323 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:27,323 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:27,789 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:27,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520916111] [2022-02-24 01:44:27,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1520916111] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:27,790 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:27,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-24 01:44:27,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351605253] [2022-02-24 01:44:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:27,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-24 01:44:27,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:27,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-24 01:44:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 01:44:27,791 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) [2022-02-24 01:44:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:28,483 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2022-02-24 01:44:28,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 01:44:28,483 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 [2022-02-24 01:44:28,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:28,484 INFO L225 Difference]: With dead ends: 50 [2022-02-24 01:44:28,484 INFO L226 Difference]: Without dead ends: 48 [2022-02-24 01:44:28,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1459, Invalid=2447, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 01:44:28,484 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 [2022-02-24 01:44:28,485 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] [2022-02-24 01:44:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-24 01:44:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-02-24 01:44:28,488 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) [2022-02-24 01:44:28,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-02-24 01:44:28,488 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 39 [2022-02-24 01:44:28,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:28,488 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-02-24 01:44:28,488 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) [2022-02-24 01:44:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-02-24 01:44:28,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 01:44:28,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:28,489 INFO L514 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:28,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-24 01:44:28,489 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:28,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash 327317878, now seen corresponding path program 29 times [2022-02-24 01:44:28,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:28,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743980346] [2022-02-24 01:44:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:28,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:28,491 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:28,491 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:28,491 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:29,004 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:29,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743980346] [2022-02-24 01:44:29,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1743980346] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:29,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:29,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-02-24 01:44:29,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034108] [2022-02-24 01:44:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:29,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-24 01:44:29,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-24 01:44:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 01:44:29,005 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) [2022-02-24 01:44:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:29,497 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-02-24 01:44:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 01:44:29,497 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 [2022-02-24 01:44:29,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:29,497 INFO L225 Difference]: With dead ends: 48 [2022-02-24 01:44:29,498 INFO L226 Difference]: Without dead ends: 44 [2022-02-24 01:44:29,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 01:44:29,498 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-02-24 01:44:29,498 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] [2022-02-24 01:44:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-24 01:44:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-02-24 01:44:29,502 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) [2022-02-24 01:44:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2022-02-24 01:44:29,502 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 40 [2022-02-24 01:44:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:29,502 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2022-02-24 01:44:29,502 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) [2022-02-24 01:44:29,502 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2022-02-24 01:44:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 01:44:29,502 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:29,502 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:29,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-24 01:44:29,503 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:29,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash 327366697, now seen corresponding path program 30 times [2022-02-24 01:44:29,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:29,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161712821] [2022-02-24 01:44:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:29,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:29,504 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:29,504 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:29,504 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:30,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:30,045 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:30,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161712821] [2022-02-24 01:44:30,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [161712821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:30,045 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:30,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-24 01:44:30,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290231350] [2022-02-24 01:44:30,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:30,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-24 01:44:30,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-24 01:44:30,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 01:44:30,046 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) [2022-02-24 01:44:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:30,661 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2022-02-24 01:44:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 01:44:30,662 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 [2022-02-24 01:44:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:30,662 INFO L225 Difference]: With dead ends: 51 [2022-02-24 01:44:30,662 INFO L226 Difference]: Without dead ends: 49 [2022-02-24 01:44:30,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1554, Invalid=2606, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 01:44:30,663 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:30,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-24 01:44:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-02-24 01:44:30,666 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) [2022-02-24 01:44:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-02-24 01:44:30,667 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40 [2022-02-24 01:44:30,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:30,667 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-02-24 01:44:30,667 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) [2022-02-24 01:44:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-02-24 01:44:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-24 01:44:30,667 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:30,667 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:30,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-24 01:44:30,667 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:30,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1558436086, now seen corresponding path program 30 times [2022-02-24 01:44:30,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:30,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384225260] [2022-02-24 01:44:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:30,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:30,669 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:30,669 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:30,670 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:31,088 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:31,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384225260] [2022-02-24 01:44:31,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384225260] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:31,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:31,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-02-24 01:44:31,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357583637] [2022-02-24 01:44:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:31,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-24 01:44:31,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:31,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-24 01:44:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 01:44:31,089 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) [2022-02-24 01:44:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:31,427 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-02-24 01:44:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 01:44:31,428 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 [2022-02-24 01:44:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:31,428 INFO L225 Difference]: With dead ends: 49 [2022-02-24 01:44:31,428 INFO L226 Difference]: Without dead ends: 45 [2022-02-24 01:44:31,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 01:44:31,449 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:31,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-02-24 01:44:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-02-24 01:44:31,452 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) [2022-02-24 01:44:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2022-02-24 01:44:31,453 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 41 [2022-02-24 01:44:31,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:31,453 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2022-02-24 01:44:31,453 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) [2022-02-24 01:44:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2022-02-24 01:44:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-24 01:44:31,454 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:31,454 INFO L514 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:31,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-24 01:44:31,454 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:31,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:31,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1558484905, now seen corresponding path program 31 times [2022-02-24 01:44:31,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:31,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966623666] [2022-02-24 01:44:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:31,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:31,456 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:31,456 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:31,456 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:31,855 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:31,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966623666] [2022-02-24 01:44:31,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [966623666] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:31,855 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:31,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-24 01:44:31,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890833284] [2022-02-24 01:44:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:31,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-24 01:44:31,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-24 01:44:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 01:44:31,856 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) [2022-02-24 01:44:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:32,481 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-02-24 01:44:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 01:44:32,481 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 [2022-02-24 01:44:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:32,482 INFO L225 Difference]: With dead ends: 52 [2022-02-24 01:44:32,482 INFO L226 Difference]: Without dead ends: 50 [2022-02-24 01:44:32,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1652, Invalid=2770, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 01:44:32,487 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:32,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-24 01:44:32,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-02-24 01:44:32,491 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) [2022-02-24 01:44:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-02-24 01:44:32,491 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 41 [2022-02-24 01:44:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:32,491 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-02-24 01:44:32,492 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) [2022-02-24 01:44:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-02-24 01:44:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-24 01:44:32,492 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:32,492 INFO L514 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:32,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-24 01:44:32,493 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:32,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1068394870, now seen corresponding path program 31 times [2022-02-24 01:44:32,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:32,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509663886] [2022-02-24 01:44:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:32,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:32,499 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:32,499 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:32,499 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:33,076 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:33,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509663886] [2022-02-24 01:44:33,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [509663886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:33,076 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:33,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-02-24 01:44:33,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908021692] [2022-02-24 01:44:33,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:33,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-24 01:44:33,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:33,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-24 01:44:33,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 01:44:33,077 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) [2022-02-24 01:44:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:33,625 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2022-02-24 01:44:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 01:44:33,625 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 [2022-02-24 01:44:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:33,626 INFO L225 Difference]: With dead ends: 50 [2022-02-24 01:44:33,626 INFO L226 Difference]: Without dead ends: 46 [2022-02-24 01:44:33,627 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 [2022-02-24 01:44:33,627 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 [2022-02-24 01:44:33,627 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] [2022-02-24 01:44:33,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-24 01:44:33,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-02-24 01:44:33,635 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) [2022-02-24 01:44:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2022-02-24 01:44:33,635 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 42 [2022-02-24 01:44:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:33,635 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2022-02-24 01:44:33,635 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) [2022-02-24 01:44:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2022-02-24 01:44:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-24 01:44:33,636 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:33,636 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:33,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-24 01:44:33,636 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1068443689, now seen corresponding path program 32 times [2022-02-24 01:44:33,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:33,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251233099] [2022-02-24 01:44:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:33,638 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:33,638 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:33,638 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:34,055 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:34,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251233099] [2022-02-24 01:44:34,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [251233099] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:34,056 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:34,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-24 01:44:34,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023848567] [2022-02-24 01:44:34,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:34,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-24 01:44:34,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-24 01:44:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 01:44:34,059 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) [2022-02-24 01:44:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:34,676 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2022-02-24 01:44:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-24 01:44:34,677 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 [2022-02-24 01:44:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:34,679 INFO L225 Difference]: With dead ends: 53 [2022-02-24 01:44:34,679 INFO L226 Difference]: Without dead ends: 51 [2022-02-24 01:44:34,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1753, Invalid=2939, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 01:44:34,680 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:34,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:34,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-24 01:44:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-02-24 01:44:34,716 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) [2022-02-24 01:44:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-02-24 01:44:34,719 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 42 [2022-02-24 01:44:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:34,719 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-02-24 01:44:34,719 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) [2022-02-24 01:44:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-02-24 01:44:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-24 01:44:34,719 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:34,719 INFO L514 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:34,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-24 01:44:34,719 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1237980938, now seen corresponding path program 32 times [2022-02-24 01:44:34,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:34,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657571775] [2022-02-24 01:44:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:34,727 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:34,727 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:34,727 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:35,237 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:35,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657571775] [2022-02-24 01:44:35,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1657571775] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:35,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:35,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-02-24 01:44:35,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88737873] [2022-02-24 01:44:35,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:35,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-24 01:44:35,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:35,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-24 01:44:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 01:44:35,238 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) [2022-02-24 01:44:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:35,714 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2022-02-24 01:44:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-24 01:44:35,715 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 [2022-02-24 01:44:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:35,718 INFO L225 Difference]: With dead ends: 51 [2022-02-24 01:44:35,718 INFO L226 Difference]: Without dead ends: 47 [2022-02-24 01:44:35,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 01:44:35,719 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:35,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-02-24 01:44:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-02-24 01:44:35,723 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) [2022-02-24 01:44:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-02-24 01:44:35,723 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 43 [2022-02-24 01:44:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:35,723 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-02-24 01:44:35,723 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) [2022-02-24 01:44:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-02-24 01:44:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-24 01:44:35,723 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:35,723 INFO L514 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:35,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-24 01:44:35,724 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1237932119, now seen corresponding path program 33 times [2022-02-24 01:44:35,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:35,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582772760] [2022-02-24 01:44:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:35,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:35,725 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:35,726 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:35,726 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:36,210 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:36,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582772760] [2022-02-24 01:44:36,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1582772760] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:36,210 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:36,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-24 01:44:36,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929606887] [2022-02-24 01:44:36,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:36,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-24 01:44:36,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:36,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-24 01:44:36,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 01:44:36,211 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) [2022-02-24 01:44:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:37,105 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-02-24 01:44:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 01:44:37,105 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 [2022-02-24 01:44:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:37,106 INFO L225 Difference]: With dead ends: 54 [2022-02-24 01:44:37,106 INFO L226 Difference]: Without dead ends: 52 [2022-02-24 01:44:37,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1857, Invalid=3113, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 01:44:37,106 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 [2022-02-24 01:44:37,107 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] [2022-02-24 01:44:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-24 01:44:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-02-24 01:44:37,111 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) [2022-02-24 01:44:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-02-24 01:44:37,111 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 43 [2022-02-24 01:44:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:37,111 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-02-24 01:44:37,111 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) [2022-02-24 01:44:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-02-24 01:44:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-24 01:44:37,111 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:37,112 INFO L514 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:37,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-24 01:44:37,112 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash 278813046, now seen corresponding path program 33 times [2022-02-24 01:44:37,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:37,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167135621] [2022-02-24 01:44:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:37,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:37,114 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:37,114 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:37,114 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:37,712 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:37,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167135621] [2022-02-24 01:44:37,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [167135621] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:37,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:37,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-02-24 01:44:37,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446253652] [2022-02-24 01:44:37,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:37,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-24 01:44:37,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-24 01:44:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 01:44:37,713 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) [2022-02-24 01:44:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:38,259 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-02-24 01:44:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 01:44:38,260 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 [2022-02-24 01:44:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:38,260 INFO L225 Difference]: With dead ends: 52 [2022-02-24 01:44:38,260 INFO L226 Difference]: Without dead ends: 48 [2022-02-24 01:44:38,261 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 [2022-02-24 01:44:38,261 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-02-24 01:44:38,261 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] [2022-02-24 01:44:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-02-24 01:44:38,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-02-24 01:44:38,265 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) [2022-02-24 01:44:38,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-02-24 01:44:38,265 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 44 [2022-02-24 01:44:38,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:38,265 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-02-24 01:44:38,265 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) [2022-02-24 01:44:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-02-24 01:44:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-24 01:44:38,265 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:38,265 INFO L514 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:38,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-24 01:44:38,266 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:38,266 INFO L85 PathProgramCache]: Analyzing trace with hash 278861865, now seen corresponding path program 34 times [2022-02-24 01:44:38,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:38,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804679651] [2022-02-24 01:44:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:38,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:38,267 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:38,267 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:38,267 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:38,693 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:38,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804679651] [2022-02-24 01:44:38,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1804679651] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:38,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:38,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-24 01:44:38,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829379530] [2022-02-24 01:44:38,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:38,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-24 01:44:38,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-24 01:44:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 01:44:38,695 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) [2022-02-24 01:44:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:39,379 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2022-02-24 01:44:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 01:44:39,380 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 [2022-02-24 01:44:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:39,386 INFO L225 Difference]: With dead ends: 55 [2022-02-24 01:44:39,387 INFO L226 Difference]: Without dead ends: 53 [2022-02-24 01:44:39,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1964, Invalid=3292, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 01:44:39,389 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:39,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:39,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-24 01:44:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-02-24 01:44:39,404 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) [2022-02-24 01:44:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-02-24 01:44:39,404 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 44 [2022-02-24 01:44:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:39,404 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-02-24 01:44:39,404 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) [2022-02-24 01:44:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-02-24 01:44:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-24 01:44:39,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:39,405 INFO L514 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:39,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-24 01:44:39,405 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:39,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash 54786294, now seen corresponding path program 34 times [2022-02-24 01:44:39,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:39,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285609021] [2022-02-24 01:44:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:39,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:39,406 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:39,406 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:39,406 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:40,052 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:40,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285609021] [2022-02-24 01:44:40,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1285609021] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:40,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:40,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-02-24 01:44:40,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442915962] [2022-02-24 01:44:40,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:40,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-24 01:44:40,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-24 01:44:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 01:44:40,054 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) [2022-02-24 01:44:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:40,599 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2022-02-24 01:44:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 01:44:40,599 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 [2022-02-24 01:44:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:40,600 INFO L225 Difference]: With dead ends: 53 [2022-02-24 01:44:40,600 INFO L226 Difference]: Without dead ends: 49 [2022-02-24 01:44:40,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 01:44:40,600 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-02-24 01:44:40,601 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] [2022-02-24 01:44:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-24 01:44:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-02-24 01:44:40,604 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) [2022-02-24 01:44:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-02-24 01:44:40,604 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 45 [2022-02-24 01:44:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:40,605 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-02-24 01:44:40,605 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) [2022-02-24 01:44:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-02-24 01:44:40,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-24 01:44:40,605 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:40,605 INFO L514 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:40,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-24 01:44:40,605 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash 54835113, now seen corresponding path program 35 times [2022-02-24 01:44:40,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:40,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477043256] [2022-02-24 01:44:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:40,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:40,607 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:40,607 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:40,607 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:41,019 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:41,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477043256] [2022-02-24 01:44:41,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [477043256] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:41,019 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:41,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-24 01:44:41,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719762221] [2022-02-24 01:44:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:41,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-24 01:44:41,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-24 01:44:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 01:44:41,020 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) [2022-02-24 01:44:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:41,910 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2022-02-24 01:44:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 01:44:41,910 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 [2022-02-24 01:44:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:41,911 INFO L225 Difference]: With dead ends: 56 [2022-02-24 01:44:41,911 INFO L226 Difference]: Without dead ends: 54 [2022-02-24 01:44:41,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2074, Invalid=3476, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 01:44:41,913 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 [2022-02-24 01:44:41,913 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] [2022-02-24 01:44:41,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-24 01:44:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2022-02-24 01:44:41,917 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) [2022-02-24 01:44:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-02-24 01:44:41,917 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 45 [2022-02-24 01:44:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:41,917 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-02-24 01:44:41,917 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) [2022-02-24 01:44:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-02-24 01:44:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 01:44:41,918 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:41,918 INFO L514 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:41,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-24 01:44:41,918 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1699891574, now seen corresponding path program 35 times [2022-02-24 01:44:41,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:41,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538497389] [2022-02-24 01:44:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:41,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:41,919 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:41,919 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:41,920 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:42,487 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:42,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538497389] [2022-02-24 01:44:42,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1538497389] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:42,487 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:42,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-02-24 01:44:42,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123337181] [2022-02-24 01:44:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:42,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-24 01:44:42,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-24 01:44:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 01:44:42,488 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) [2022-02-24 01:44:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:43,015 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-02-24 01:44:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-24 01:44:43,016 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 [2022-02-24 01:44:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:43,016 INFO L225 Difference]: With dead ends: 54 [2022-02-24 01:44:43,016 INFO L226 Difference]: Without dead ends: 50 [2022-02-24 01:44:43,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 01:44:43,017 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:43,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-24 01:44:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-02-24 01:44:43,021 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) [2022-02-24 01:44:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2022-02-24 01:44:43,021 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 46 [2022-02-24 01:44:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:43,021 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2022-02-24 01:44:43,021 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) [2022-02-24 01:44:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2022-02-24 01:44:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-24 01:44:43,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:43,022 INFO L514 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:43,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-24 01:44:43,022 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:43,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:43,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1699940393, now seen corresponding path program 36 times [2022-02-24 01:44:43,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:43,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464705192] [2022-02-24 01:44:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:43,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:43,024 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:43,024 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:43,024 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:43,667 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:43,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464705192] [2022-02-24 01:44:43,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [464705192] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:43,667 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:43,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-24 01:44:43,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634216911] [2022-02-24 01:44:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:43,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-24 01:44:43,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-24 01:44:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 01:44:43,668 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) [2022-02-24 01:44:44,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:44,744 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2022-02-24 01:44:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-24 01:44:44,744 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 [2022-02-24 01:44:44,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:44,745 INFO L225 Difference]: With dead ends: 57 [2022-02-24 01:44:44,745 INFO L226 Difference]: Without dead ends: 55 [2022-02-24 01:44:44,745 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 [2022-02-24 01:44:44,746 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 [2022-02-24 01:44:44,746 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] [2022-02-24 01:44:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-24 01:44:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2022-02-24 01:44:44,749 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) [2022-02-24 01:44:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2022-02-24 01:44:44,750 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 46 [2022-02-24 01:44:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:44,750 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2022-02-24 01:44:44,750 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) [2022-02-24 01:44:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2022-02-24 01:44:44,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 01:44:44,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:44,750 INFO L514 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:44,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-24 01:44:44,750 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:44,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1158547702, now seen corresponding path program 36 times [2022-02-24 01:44:44,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:44,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847591136] [2022-02-24 01:44:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:44,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:44,753 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:44,753 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:44,753 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:45,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:45,420 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:45,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847591136] [2022-02-24 01:44:45,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [847591136] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:45,420 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:45,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-02-24 01:44:45,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90485377] [2022-02-24 01:44:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:45,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-24 01:44:45,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-24 01:44:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 01:44:45,421 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) [2022-02-24 01:44:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:46,102 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2022-02-24 01:44:46,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-24 01:44:46,102 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 [2022-02-24 01:44:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:46,103 INFO L225 Difference]: With dead ends: 55 [2022-02-24 01:44:46,103 INFO L226 Difference]: Without dead ends: 51 [2022-02-24 01:44:46,103 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 [2022-02-24 01:44:46,103 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 [2022-02-24 01:44:46,103 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] [2022-02-24 01:44:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-24 01:44:46,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-02-24 01:44:46,107 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) [2022-02-24 01:44:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-02-24 01:44:46,107 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 47 [2022-02-24 01:44:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:46,107 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-02-24 01:44:46,107 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) [2022-02-24 01:44:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-02-24 01:44:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 01:44:46,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:46,108 INFO L514 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:46,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-24 01:44:46,108 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1158596521, now seen corresponding path program 37 times [2022-02-24 01:44:46,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:46,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673539049] [2022-02-24 01:44:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:46,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:46,110 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:46,110 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:46,110 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:46,761 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:46,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673539049] [2022-02-24 01:44:46,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [673539049] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:46,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:46,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-24 01:44:46,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580456979] [2022-02-24 01:44:46,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:46,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-24 01:44:46,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-24 01:44:46,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=895, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 01:44:46,762 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) [2022-02-24 01:44:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:47,893 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2022-02-24 01:44:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 01:44:47,893 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 [2022-02-24 01:44:47,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:47,893 INFO L225 Difference]: With dead ends: 58 [2022-02-24 01:44:47,894 INFO L226 Difference]: Without dead ends: 56 [2022-02-24 01:44:47,894 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 [2022-02-24 01:44:47,894 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 [2022-02-24 01:44:47,894 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] [2022-02-24 01:44:47,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-24 01:44:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2022-02-24 01:44:47,898 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) [2022-02-24 01:44:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2022-02-24 01:44:47,898 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 47 [2022-02-24 01:44:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:47,898 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2022-02-24 01:44:47,898 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) [2022-02-24 01:44:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2022-02-24 01:44:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-24 01:44:47,899 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:47,899 INFO L514 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:47,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-24 01:44:47,899 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1556756854, now seen corresponding path program 37 times [2022-02-24 01:44:47,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:47,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442129749] [2022-02-24 01:44:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:47,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:47,901 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:47,901 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:47,901 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:48,540 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:48,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442129749] [2022-02-24 01:44:48,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1442129749] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:48,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:48,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-02-24 01:44:48,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508857573] [2022-02-24 01:44:48,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:48,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-24 01:44:48,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-24 01:44:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 01:44:48,541 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) [2022-02-24 01:44:49,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:49,103 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2022-02-24 01:44:49,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-24 01:44:49,103 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 [2022-02-24 01:44:49,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:49,105 INFO L225 Difference]: With dead ends: 56 [2022-02-24 01:44:49,105 INFO L226 Difference]: Without dead ends: 52 [2022-02-24 01:44:49,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 01:44:49,106 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 [2022-02-24 01:44:49,107 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] [2022-02-24 01:44:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-24 01:44:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-02-24 01:44:49,112 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) [2022-02-24 01:44:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2022-02-24 01:44:49,112 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 48 [2022-02-24 01:44:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:49,113 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2022-02-24 01:44:49,113 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) [2022-02-24 01:44:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2022-02-24 01:44:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-24 01:44:49,113 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:49,113 INFO L514 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:49,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-24 01:44:49,113 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1556805673, now seen corresponding path program 38 times [2022-02-24 01:44:49,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:49,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961875661] [2022-02-24 01:44:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:49,115 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:49,115 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:49,115 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:49,582 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:49,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961875661] [2022-02-24 01:44:49,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [961875661] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:49,583 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:49,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-24 01:44:49,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808871443] [2022-02-24 01:44:49,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:49,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-24 01:44:49,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-24 01:44:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=938, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 01:44:49,584 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) [2022-02-24 01:44:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:50,561 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-02-24 01:44:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-24 01:44:50,561 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 [2022-02-24 01:44:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:50,562 INFO L225 Difference]: With dead ends: 59 [2022-02-24 01:44:50,562 INFO L226 Difference]: Without dead ends: 57 [2022-02-24 01:44:50,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2422, Invalid=4058, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 01:44:50,563 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 [2022-02-24 01:44:50,563 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] [2022-02-24 01:44:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-24 01:44:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-02-24 01:44:50,567 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) [2022-02-24 01:44:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2022-02-24 01:44:50,567 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 48 [2022-02-24 01:44:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:50,567 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2022-02-24 01:44:50,567 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) [2022-02-24 01:44:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2022-02-24 01:44:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 01:44:50,568 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:50,568 INFO L514 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:50,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-24 01:44:50,568 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:50,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:50,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1016338678, now seen corresponding path program 38 times [2022-02-24 01:44:50,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:50,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925956401] [2022-02-24 01:44:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:50,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:50,570 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:50,570 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:50,570 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:51,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:51,314 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:51,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925956401] [2022-02-24 01:44:51,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [925956401] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:51,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:51,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-02-24 01:44:51,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047675480] [2022-02-24 01:44:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:51,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-24 01:44:51,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-24 01:44:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 01:44:51,315 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) [2022-02-24 01:44:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:52,032 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2022-02-24 01:44:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-24 01:44:52,033 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 [2022-02-24 01:44:52,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:52,033 INFO L225 Difference]: With dead ends: 57 [2022-02-24 01:44:52,033 INFO L226 Difference]: Without dead ends: 53 [2022-02-24 01:44:52,034 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 [2022-02-24 01:44:52,034 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 [2022-02-24 01:44:52,034 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] [2022-02-24 01:44:52,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-24 01:44:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-02-24 01:44:52,038 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) [2022-02-24 01:44:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2022-02-24 01:44:52,038 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 49 [2022-02-24 01:44:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:52,038 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2022-02-24 01:44:52,039 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) [2022-02-24 01:44:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2022-02-24 01:44:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-24 01:44:52,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:52,039 INFO L514 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:52,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-24 01:44:52,039 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1016387497, now seen corresponding path program 39 times [2022-02-24 01:44:52,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:52,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017305685] [2022-02-24 01:44:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:52,041 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:52,041 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:52,041 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:52,736 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:52,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017305685] [2022-02-24 01:44:52,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2017305685] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:52,736 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:52,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-24 01:44:52,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228450189] [2022-02-24 01:44:52,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:52,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-24 01:44:52,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:52,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-24 01:44:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=824, Invalid=982, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 01:44:52,738 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) [2022-02-24 01:44:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:53,896 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-02-24 01:44:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 01:44:53,896 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 [2022-02-24 01:44:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:53,897 INFO L225 Difference]: With dead ends: 60 [2022-02-24 01:44:53,897 INFO L226 Difference]: Without dead ends: 58 [2022-02-24 01:44:53,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2544, Invalid=4262, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 01:44:53,897 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 [2022-02-24 01:44:53,898 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] [2022-02-24 01:44:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-02-24 01:44:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-02-24 01:44:53,904 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) [2022-02-24 01:44:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2022-02-24 01:44:53,906 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 49 [2022-02-24 01:44:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:53,906 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2022-02-24 01:44:53,906 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) [2022-02-24 01:44:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2022-02-24 01:44:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 01:44:53,906 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:53,906 INFO L514 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:53,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-24 01:44:53,906 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:53,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1443244406, now seen corresponding path program 39 times [2022-02-24 01:44:53,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:53,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627805242] [2022-02-24 01:44:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:53,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:53,909 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:53,909 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:53,909 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:54,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:54,647 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:54,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627805242] [2022-02-24 01:44:54,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [627805242] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:54,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:54,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-02-24 01:44:54,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219367977] [2022-02-24 01:44:54,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:54,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-24 01:44:54,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-24 01:44:54,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 01:44:54,648 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) [2022-02-24 01:44:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:55,204 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2022-02-24 01:44:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 01:44:55,204 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 [2022-02-24 01:44:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:55,205 INFO L225 Difference]: With dead ends: 58 [2022-02-24 01:44:55,205 INFO L226 Difference]: Without dead ends: 54 [2022-02-24 01:44:55,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 01:44:55,206 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:44:55,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:44:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-24 01:44:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-02-24 01:44:55,210 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) [2022-02-24 01:44:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2022-02-24 01:44:55,210 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 50 [2022-02-24 01:44:55,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:55,210 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2022-02-24 01:44:55,210 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) [2022-02-24 01:44:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2022-02-24 01:44:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-24 01:44:55,210 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:55,210 INFO L514 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:55,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-24 01:44:55,211 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1443293225, now seen corresponding path program 40 times [2022-02-24 01:44:55,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:55,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490331906] [2022-02-24 01:44:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:55,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:55,212 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:55,212 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:55,212 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:55,747 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:55,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490331906] [2022-02-24 01:44:55,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1490331906] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:55,747 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:55,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-24 01:44:55,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806909158] [2022-02-24 01:44:55,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:55,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-24 01:44:55,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-24 01:44:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=1027, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 01:44:55,748 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) [2022-02-24 01:44:56,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:56,903 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2022-02-24 01:44:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-24 01:44:56,904 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 [2022-02-24 01:44:56,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:56,904 INFO L225 Difference]: With dead ends: 61 [2022-02-24 01:44:56,904 INFO L226 Difference]: Without dead ends: 59 [2022-02-24 01:44:56,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2669, Invalid=4471, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 01:44:56,905 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 [2022-02-24 01:44:56,905 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] [2022-02-24 01:44:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-24 01:44:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2022-02-24 01:44:56,909 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) [2022-02-24 01:44:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-02-24 01:44:56,909 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 50 [2022-02-24 01:44:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:56,909 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-02-24 01:44:56,909 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) [2022-02-24 01:44:56,909 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-02-24 01:44:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-24 01:44:56,910 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:56,910 INFO L514 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:56,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-24 01:44:56,910 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1792420086, now seen corresponding path program 40 times [2022-02-24 01:44:56,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:56,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190887089] [2022-02-24 01:44:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:56,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:56,912 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:56,912 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:56,912 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:57,673 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:57,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190887089] [2022-02-24 01:44:57,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1190887089] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:57,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:57,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-02-24 01:44:57,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888295022] [2022-02-24 01:44:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:57,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-24 01:44:57,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-24 01:44:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 01:44:57,674 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) [2022-02-24 01:44:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:44:58,384 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-02-24 01:44:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-24 01:44:58,385 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 [2022-02-24 01:44:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:44:58,385 INFO L225 Difference]: With dead ends: 59 [2022-02-24 01:44:58,385 INFO L226 Difference]: Without dead ends: 55 [2022-02-24 01:44:58,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 01:44:58,386 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 [2022-02-24 01:44:58,386 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] [2022-02-24 01:44:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-24 01:44:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-02-24 01:44:58,390 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) [2022-02-24 01:44:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-02-24 01:44:58,390 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 51 [2022-02-24 01:44:58,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:44:58,390 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-02-24 01:44:58,390 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) [2022-02-24 01:44:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-02-24 01:44:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-24 01:44:58,391 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:44:58,391 INFO L514 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:44:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-24 01:44:58,391 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:44:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:44:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1792468905, now seen corresponding path program 41 times [2022-02-24 01:44:58,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:44:58,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511104464] [2022-02-24 01:44:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:44:58,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:44:58,392 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:44:58,393 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:44:58,393 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:44:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:59,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:44:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:44:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:44:59,150 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:44:59,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511104464] [2022-02-24 01:44:59,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1511104464] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:44:59,150 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:44:59,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-24 01:44:59,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389600069] [2022-02-24 01:44:59,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:44:59,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-24 01:44:59,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:44:59,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-24 01:44:59,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=907, Invalid=1073, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 01:44:59,151 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) [2022-02-24 01:45:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:00,208 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2022-02-24 01:45:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-24 01:45:00,208 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 [2022-02-24 01:45:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:00,208 INFO L225 Difference]: With dead ends: 62 [2022-02-24 01:45:00,208 INFO L226 Difference]: Without dead ends: 60 [2022-02-24 01:45:00,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2797, Invalid=4685, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 01:45:00,209 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 [2022-02-24 01:45:00,209 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] [2022-02-24 01:45:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-02-24 01:45:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2022-02-24 01:45:00,213 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) [2022-02-24 01:45:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-02-24 01:45:00,213 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 51 [2022-02-24 01:45:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:00,214 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-02-24 01:45:00,214 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) [2022-02-24 01:45:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-02-24 01:45:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-24 01:45:00,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:00,214 INFO L514 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:00,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-24 01:45:00,214 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:00,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash -268035722, now seen corresponding path program 41 times [2022-02-24 01:45:00,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:00,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008929820] [2022-02-24 01:45:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:00,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:00,216 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:00,216 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:00,216 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:00,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:00,757 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:00,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008929820] [2022-02-24 01:45:00,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1008929820] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:00,757 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:00,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-02-24 01:45:00,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178047368] [2022-02-24 01:45:00,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:00,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-24 01:45:00,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:00,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-24 01:45:00,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 01:45:00,758 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) [2022-02-24 01:45:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:01,505 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-02-24 01:45:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-24 01:45:01,505 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 [2022-02-24 01:45:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:01,506 INFO L225 Difference]: With dead ends: 60 [2022-02-24 01:45:01,506 INFO L226 Difference]: Without dead ends: 56 [2022-02-24 01:45:01,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 01:45:01,507 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 [2022-02-24 01:45:01,507 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] [2022-02-24 01:45:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-02-24 01:45:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-02-24 01:45:01,518 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) [2022-02-24 01:45:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2022-02-24 01:45:01,518 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 52 [2022-02-24 01:45:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:01,519 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2022-02-24 01:45:01,519 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) [2022-02-24 01:45:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2022-02-24 01:45:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-24 01:45:01,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:01,519 INFO L514 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:01,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-24 01:45:01,519 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:01,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash -267986903, now seen corresponding path program 42 times [2022-02-24 01:45:01,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:01,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396311152] [2022-02-24 01:45:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:01,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:01,521 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:01,521 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:01,521 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:02,072 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:02,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396311152] [2022-02-24 01:45:02,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [396311152] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:02,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:02,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-24 01:45:02,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905568280] [2022-02-24 01:45:02,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:02,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-24 01:45:02,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:02,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-24 01:45:02,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=1120, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 01:45:02,074 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) [2022-02-24 01:45:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:03,205 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-02-24 01:45:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-24 01:45:03,205 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 [2022-02-24 01:45:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:03,206 INFO L225 Difference]: With dead ends: 63 [2022-02-24 01:45:03,206 INFO L226 Difference]: Without dead ends: 61 [2022-02-24 01:45:03,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2928, Invalid=4904, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 01:45:03,206 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 [2022-02-24 01:45:03,206 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] [2022-02-24 01:45:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-24 01:45:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2022-02-24 01:45:03,214 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) [2022-02-24 01:45:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2022-02-24 01:45:03,219 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2022-02-24 01:45:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:03,219 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2022-02-24 01:45:03,219 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) [2022-02-24 01:45:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2022-02-24 01:45:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 01:45:03,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:03,220 INFO L514 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:03,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-24 01:45:03,220 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:03,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash 282343670, now seen corresponding path program 42 times [2022-02-24 01:45:03,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:03,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320311016] [2022-02-24 01:45:03,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:03,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:03,224 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:03,224 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:03,224 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:04,080 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:04,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320311016] [2022-02-24 01:45:04,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1320311016] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:04,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:04,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-02-24 01:45:04,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486679227] [2022-02-24 01:45:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:04,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-24 01:45:04,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-24 01:45:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 01:45:04,081 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) [2022-02-24 01:45:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:04,781 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2022-02-24 01:45:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-24 01:45:04,781 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 [2022-02-24 01:45:04,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:04,782 INFO L225 Difference]: With dead ends: 61 [2022-02-24 01:45:04,782 INFO L226 Difference]: Without dead ends: 57 [2022-02-24 01:45:04,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 01:45:04,783 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 [2022-02-24 01:45:04,783 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] [2022-02-24 01:45:04,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-02-24 01:45:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-02-24 01:45:04,800 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) [2022-02-24 01:45:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2022-02-24 01:45:04,800 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 53 [2022-02-24 01:45:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:04,800 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2022-02-24 01:45:04,800 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) [2022-02-24 01:45:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2022-02-24 01:45:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-24 01:45:04,802 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:04,802 INFO L514 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:04,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-24 01:45:04,803 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:04,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:04,803 INFO L85 PathProgramCache]: Analyzing trace with hash 282392489, now seen corresponding path program 43 times [2022-02-24 01:45:04,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:04,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208780049] [2022-02-24 01:45:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:04,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:04,812 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:04,812 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:04,812 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:05,340 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:05,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208780049] [2022-02-24 01:45:05,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1208780049] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:05,340 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:05,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-24 01:45:05,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81423297] [2022-02-24 01:45:05,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:05,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-24 01:45:05,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-24 01:45:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=994, Invalid=1168, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 01:45:05,342 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) [2022-02-24 01:45:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:06,470 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2022-02-24 01:45:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-24 01:45:06,470 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 [2022-02-24 01:45:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:06,470 INFO L225 Difference]: With dead ends: 64 [2022-02-24 01:45:06,471 INFO L226 Difference]: Without dead ends: 62 [2022-02-24 01:45:06,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3062, Invalid=5128, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 01:45:06,471 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 [2022-02-24 01:45:06,471 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] [2022-02-24 01:45:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-24 01:45:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2022-02-24 01:45:06,479 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) [2022-02-24 01:45:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2022-02-24 01:45:06,479 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 53 [2022-02-24 01:45:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:06,480 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2022-02-24 01:45:06,480 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) [2022-02-24 01:45:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2022-02-24 01:45:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 01:45:06,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:06,480 INFO L514 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:06,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-24 01:45:06,480 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash 164235638, now seen corresponding path program 43 times [2022-02-24 01:45:06,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:06,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592001461] [2022-02-24 01:45:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:06,482 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:06,482 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:06,482 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:07,388 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:07,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592001461] [2022-02-24 01:45:07,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1592001461] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:07,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:07,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-02-24 01:45:07,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251737808] [2022-02-24 01:45:07,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:07,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-24 01:45:07,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-24 01:45:07,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 01:45:07,389 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) [2022-02-24 01:45:08,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:08,309 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2022-02-24 01:45:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-24 01:45:08,309 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 [2022-02-24 01:45:08,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:08,310 INFO L225 Difference]: With dead ends: 62 [2022-02-24 01:45:08,310 INFO L226 Difference]: Without dead ends: 58 [2022-02-24 01:45:08,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 01:45:08,311 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 [2022-02-24 01:45:08,311 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] [2022-02-24 01:45:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-02-24 01:45:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-02-24 01:45:08,315 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) [2022-02-24 01:45:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2022-02-24 01:45:08,316 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 54 [2022-02-24 01:45:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:08,316 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2022-02-24 01:45:08,316 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) [2022-02-24 01:45:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2022-02-24 01:45:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 01:45:08,316 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:08,316 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:08,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-24 01:45:08,316 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 164284457, now seen corresponding path program 44 times [2022-02-24 01:45:08,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:08,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291238358] [2022-02-24 01:45:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:08,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:08,318 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:08,318 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:08,318 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:08,873 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:08,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291238358] [2022-02-24 01:45:08,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [291238358] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:08,874 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:08,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-24 01:45:08,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042387593] [2022-02-24 01:45:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:08,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-24 01:45:08,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-24 01:45:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=1217, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 01:45:08,875 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) [2022-02-24 01:45:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:09,944 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-02-24 01:45:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-24 01:45:09,944 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 [2022-02-24 01:45:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:09,944 INFO L225 Difference]: With dead ends: 65 [2022-02-24 01:45:09,945 INFO L226 Difference]: Without dead ends: 63 [2022-02-24 01:45:09,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3199, Invalid=5357, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 01:45:09,945 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 [2022-02-24 01:45:09,945 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] [2022-02-24 01:45:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-24 01:45:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2022-02-24 01:45:09,950 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) [2022-02-24 01:45:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2022-02-24 01:45:09,950 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 54 [2022-02-24 01:45:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:09,950 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2022-02-24 01:45:09,950 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) [2022-02-24 01:45:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2022-02-24 01:45:09,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 01:45:09,950 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:09,950 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:09,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-24 01:45:09,951 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:09,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash 797853942, now seen corresponding path program 44 times [2022-02-24 01:45:09,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:09,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286203793] [2022-02-24 01:45:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:09,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:09,952 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:09,952 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:09,952 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:10,853 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:10,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286203793] [2022-02-24 01:45:10,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1286203793] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:10,853 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:10,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-02-24 01:45:10,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696738035] [2022-02-24 01:45:10,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:10,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-24 01:45:10,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:10,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-24 01:45:10,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-02-24 01:45:10,854 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) [2022-02-24 01:45:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:11,812 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-02-24 01:45:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-24 01:45:11,813 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 [2022-02-24 01:45:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:11,813 INFO L225 Difference]: With dead ends: 63 [2022-02-24 01:45:11,813 INFO L226 Difference]: Without dead ends: 59 [2022-02-24 01:45:11,814 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 [2022-02-24 01:45:11,814 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 [2022-02-24 01:45:11,814 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] [2022-02-24 01:45:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-24 01:45:11,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-02-24 01:45:11,818 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) [2022-02-24 01:45:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-02-24 01:45:11,819 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 55 [2022-02-24 01:45:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:11,819 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-02-24 01:45:11,819 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) [2022-02-24 01:45:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-02-24 01:45:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 01:45:11,819 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:11,819 INFO L514 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:11,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-24 01:45:11,819 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash 797902761, now seen corresponding path program 45 times [2022-02-24 01:45:11,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:11,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280933974] [2022-02-24 01:45:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:11,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:11,822 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:11,822 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:11,822 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:12,756 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:12,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280933974] [2022-02-24 01:45:12,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1280933974] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:12,756 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:12,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-24 01:45:12,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008527515] [2022-02-24 01:45:12,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:12,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-24 01:45:12,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:12,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-24 01:45:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=1267, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 01:45:12,758 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) [2022-02-24 01:45:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:13,846 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2022-02-24 01:45:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-24 01:45:13,846 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 [2022-02-24 01:45:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:13,847 INFO L225 Difference]: With dead ends: 66 [2022-02-24 01:45:13,847 INFO L226 Difference]: Without dead ends: 64 [2022-02-24 01:45:13,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3339, Invalid=5591, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 01:45:13,848 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 [2022-02-24 01:45:13,848 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] [2022-02-24 01:45:13,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-24 01:45:13,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-02-24 01:45:13,852 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) [2022-02-24 01:45:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2022-02-24 01:45:13,852 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2022-02-24 01:45:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:13,853 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2022-02-24 01:45:13,853 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) [2022-02-24 01:45:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2022-02-24 01:45:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 01:45:13,853 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:13,853 INFO L514 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:13,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-24 01:45:13,853 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1034815114, now seen corresponding path program 45 times [2022-02-24 01:45:13,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:13,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923774002] [2022-02-24 01:45:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:13,855 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:13,855 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:13,855 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:14,472 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:14,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923774002] [2022-02-24 01:45:14,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1923774002] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:14,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:14,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-02-24 01:45:14,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589297298] [2022-02-24 01:45:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:14,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-24 01:45:14,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:14,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-24 01:45:14,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 01:45:14,479 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) [2022-02-24 01:45:15,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:15,100 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2022-02-24 01:45:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-24 01:45:15,100 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 [2022-02-24 01:45:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:15,105 INFO L225 Difference]: With dead ends: 64 [2022-02-24 01:45:15,105 INFO L226 Difference]: Without dead ends: 60 [2022-02-24 01:45:15,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 01:45:15,106 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:45:15,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:45:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-02-24 01:45:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-02-24 01:45:15,123 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) [2022-02-24 01:45:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2022-02-24 01:45:15,123 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 56 [2022-02-24 01:45:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:15,123 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2022-02-24 01:45:15,130 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) [2022-02-24 01:45:15,131 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2022-02-24 01:45:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 01:45:15,131 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:15,131 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:15,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-24 01:45:15,131 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1034766295, now seen corresponding path program 46 times [2022-02-24 01:45:15,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:15,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505826985] [2022-02-24 01:45:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:15,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:15,133 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:15,133 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:15,133 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:15,933 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:15,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505826985] [2022-02-24 01:45:15,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [505826985] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:15,933 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:15,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-24 01:45:15,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121930427] [2022-02-24 01:45:15,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:15,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-24 01:45:15,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:15,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-24 01:45:15,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=1318, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 01:45:15,935 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) [2022-02-24 01:45:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:17,110 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2022-02-24 01:45:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-24 01:45:17,110 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 [2022-02-24 01:45:17,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:17,111 INFO L225 Difference]: With dead ends: 67 [2022-02-24 01:45:17,111 INFO L226 Difference]: Without dead ends: 65 [2022-02-24 01:45:17,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3482, Invalid=5830, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 01:45:17,112 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 [2022-02-24 01:45:17,112 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] [2022-02-24 01:45:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-24 01:45:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2022-02-24 01:45:17,121 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) [2022-02-24 01:45:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2022-02-24 01:45:17,121 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 56 [2022-02-24 01:45:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:17,121 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2022-02-24 01:45:17,122 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) [2022-02-24 01:45:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2022-02-24 01:45:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 01:45:17,122 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:17,122 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:17,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-24 01:45:17,122 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:17,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2012981002, now seen corresponding path program 46 times [2022-02-24 01:45:17,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:17,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766973089] [2022-02-24 01:45:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:17,132 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:17,132 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:17,132 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:18,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:18,138 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:18,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766973089] [2022-02-24 01:45:18,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [766973089] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:18,138 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:18,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-02-24 01:45:18,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490997945] [2022-02-24 01:45:18,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:18,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-24 01:45:18,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:18,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-24 01:45:18,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-02-24 01:45:18,140 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) [2022-02-24 01:45:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:18,814 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-02-24 01:45:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-24 01:45:18,814 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 [2022-02-24 01:45:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:18,815 INFO L225 Difference]: With dead ends: 65 [2022-02-24 01:45:18,815 INFO L226 Difference]: Without dead ends: 61 [2022-02-24 01:45:18,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 01:45:18,816 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-02-24 01:45:18,816 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] [2022-02-24 01:45:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-24 01:45:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-02-24 01:45:18,821 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) [2022-02-24 01:45:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2022-02-24 01:45:18,821 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 57 [2022-02-24 01:45:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:18,821 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2022-02-24 01:45:18,821 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) [2022-02-24 01:45:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2022-02-24 01:45:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 01:45:18,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:18,822 INFO L514 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:18,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-24 01:45:18,822 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2012932183, now seen corresponding path program 47 times [2022-02-24 01:45:18,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:18,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146241606] [2022-02-24 01:45:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:18,824 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:18,824 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:18,824 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:19,637 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:19,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146241606] [2022-02-24 01:45:19,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [146241606] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:19,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:19,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-24 01:45:19,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984758285] [2022-02-24 01:45:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:19,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-24 01:45:19,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-24 01:45:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=1370, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 01:45:19,638 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) [2022-02-24 01:45:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:21,171 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2022-02-24 01:45:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-24 01:45:21,171 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 [2022-02-24 01:45:21,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:21,172 INFO L225 Difference]: With dead ends: 68 [2022-02-24 01:45:21,172 INFO L226 Difference]: Without dead ends: 66 [2022-02-24 01:45:21,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3628, Invalid=6074, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 01:45:21,172 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 [2022-02-24 01:45:21,173 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] [2022-02-24 01:45:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-02-24 01:45:21,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2022-02-24 01:45:21,177 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) [2022-02-24 01:45:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2022-02-24 01:45:21,177 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 57 [2022-02-24 01:45:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:21,178 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2022-02-24 01:45:21,178 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) [2022-02-24 01:45:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2022-02-24 01:45:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 01:45:21,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:21,178 INFO L514 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:21,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-24 01:45:21,178 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2023614838, now seen corresponding path program 47 times [2022-02-24 01:45:21,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:21,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22512878] [2022-02-24 01:45:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:21,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:21,180 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:21,180 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:21,180 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:21,901 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:21,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22512878] [2022-02-24 01:45:21,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [22512878] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:21,901 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:21,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-02-24 01:45:21,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610039497] [2022-02-24 01:45:21,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:21,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-24 01:45:21,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-24 01:45:21,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 01:45:21,902 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) [2022-02-24 01:45:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:22,561 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2022-02-24 01:45:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-24 01:45:22,562 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 [2022-02-24 01:45:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:22,562 INFO L225 Difference]: With dead ends: 66 [2022-02-24 01:45:22,562 INFO L226 Difference]: Without dead ends: 62 [2022-02-24 01:45:22,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 01:45:22,564 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 01:45:22,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 01:45:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-24 01:45:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-02-24 01:45:22,569 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) [2022-02-24 01:45:22,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2022-02-24 01:45:22,569 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 58 [2022-02-24 01:45:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:22,569 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2022-02-24 01:45:22,569 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) [2022-02-24 01:45:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2022-02-24 01:45:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 01:45:22,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:22,570 INFO L514 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:22,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-24 01:45:22,570 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2023663657, now seen corresponding path program 48 times [2022-02-24 01:45:22,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:22,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507956452] [2022-02-24 01:45:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:22,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:22,571 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:22,571 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:22,571 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:23,339 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:23,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507956452] [2022-02-24 01:45:23,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [507956452] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:23,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:23,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-24 01:45:23,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139697099] [2022-02-24 01:45:23,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:23,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-24 01:45:23,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:23,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-24 01:45:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=1423, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 01:45:23,340 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) [2022-02-24 01:45:24,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:24,519 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2022-02-24 01:45:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-24 01:45:24,519 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 [2022-02-24 01:45:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:24,519 INFO L225 Difference]: With dead ends: 69 [2022-02-24 01:45:24,519 INFO L226 Difference]: Without dead ends: 67 [2022-02-24 01:45:24,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3777, Invalid=6323, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 01:45:24,520 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 [2022-02-24 01:45:24,521 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] [2022-02-24 01:45:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-24 01:45:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2022-02-24 01:45:24,525 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) [2022-02-24 01:45:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-02-24 01:45:24,525 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 58 [2022-02-24 01:45:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:24,526 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-02-24 01:45:24,526 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) [2022-02-24 01:45:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-02-24 01:45:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-24 01:45:24,526 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:24,526 INFO L514 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:24,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-24 01:45:24,526 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:24,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1690933002, now seen corresponding path program 48 times [2022-02-24 01:45:24,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:24,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667485059] [2022-02-24 01:45:24,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:24,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:24,528 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:24,529 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:24,529 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:25,508 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:25,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667485059] [2022-02-24 01:45:25,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1667485059] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:25,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:25,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-02-24 01:45:25,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037643043] [2022-02-24 01:45:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:25,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-24 01:45:25,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:25,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-24 01:45:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-02-24 01:45:25,510 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) [2022-02-24 01:45:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:26,553 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2022-02-24 01:45:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-24 01:45:26,554 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 [2022-02-24 01:45:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:26,554 INFO L225 Difference]: With dead ends: 67 [2022-02-24 01:45:26,554 INFO L226 Difference]: Without dead ends: 63 [2022-02-24 01:45:26,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 01:45:26,555 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 [2022-02-24 01:45:26,555 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] [2022-02-24 01:45:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-24 01:45:26,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-02-24 01:45:26,560 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) [2022-02-24 01:45:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2022-02-24 01:45:26,560 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 59 [2022-02-24 01:45:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:26,560 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2022-02-24 01:45:26,560 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) [2022-02-24 01:45:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2022-02-24 01:45:26,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-24 01:45:26,561 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:26,561 INFO L514 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:26,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-24 01:45:26,561 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:26,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1690884183, now seen corresponding path program 49 times [2022-02-24 01:45:26,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:26,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37682279] [2022-02-24 01:45:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:26,562 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:26,562 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:26,562 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:27,307 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:27,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37682279] [2022-02-24 01:45:27,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [37682279] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:27,307 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:27,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-24 01:45:27,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361321302] [2022-02-24 01:45:27,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:27,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-24 01:45:27,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-24 01:45:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1279, Invalid=1477, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 01:45:27,308 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) [2022-02-24 01:45:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:28,864 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-02-24 01:45:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-24 01:45:28,879 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 [2022-02-24 01:45:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:28,880 INFO L225 Difference]: With dead ends: 70 [2022-02-24 01:45:28,880 INFO L226 Difference]: Without dead ends: 68 [2022-02-24 01:45:28,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3929, Invalid=6577, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 01:45:28,881 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 [2022-02-24 01:45:28,881 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] [2022-02-24 01:45:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-24 01:45:28,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2022-02-24 01:45:28,886 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) [2022-02-24 01:45:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-02-24 01:45:28,886 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 59 [2022-02-24 01:45:28,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:28,886 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-02-24 01:45:28,886 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) [2022-02-24 01:45:28,887 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-02-24 01:45:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 01:45:28,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:28,887 INFO L514 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:28,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-24 01:45:28,887 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:28,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash -877799050, now seen corresponding path program 49 times [2022-02-24 01:45:28,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:28,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269078106] [2022-02-24 01:45:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:28,889 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:28,889 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:28,889 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:29,917 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:29,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269078106] [2022-02-24 01:45:29,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [269078106] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:29,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:29,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-02-24 01:45:29,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411368641] [2022-02-24 01:45:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:29,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-24 01:45:29,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:29,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-24 01:45:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 01:45:29,918 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) [2022-02-24 01:45:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:31,020 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2022-02-24 01:45:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-24 01:45:31,021 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 [2022-02-24 01:45:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:31,021 INFO L225 Difference]: With dead ends: 68 [2022-02-24 01:45:31,021 INFO L226 Difference]: Without dead ends: 64 [2022-02-24 01:45:31,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 01:45:31,022 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 [2022-02-24 01:45:31,022 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] [2022-02-24 01:45:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-24 01:45:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-02-24 01:45:31,026 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) [2022-02-24 01:45:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2022-02-24 01:45:31,027 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 60 [2022-02-24 01:45:31,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:31,027 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2022-02-24 01:45:31,027 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) [2022-02-24 01:45:31,027 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2022-02-24 01:45:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 01:45:31,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:31,027 INFO L514 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:31,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-24 01:45:31,028 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:31,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:31,028 INFO L85 PathProgramCache]: Analyzing trace with hash -877750231, now seen corresponding path program 50 times [2022-02-24 01:45:31,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:31,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222701057] [2022-02-24 01:45:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:31,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:31,029 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:31,029 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:31,029 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:31,949 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:31,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222701057] [2022-02-24 01:45:31,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [222701057] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:31,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:31,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-24 01:45:31,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421928760] [2022-02-24 01:45:31,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:31,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-24 01:45:31,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-24 01:45:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=1532, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 01:45:31,950 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) [2022-02-24 01:45:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:33,362 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2022-02-24 01:45:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-24 01:45:33,362 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 [2022-02-24 01:45:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:33,363 INFO L225 Difference]: With dead ends: 71 [2022-02-24 01:45:33,363 INFO L226 Difference]: Without dead ends: 69 [2022-02-24 01:45:33,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4084, Invalid=6836, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 01:45:33,365 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 [2022-02-24 01:45:33,365 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] [2022-02-24 01:45:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-24 01:45:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2022-02-24 01:45:33,370 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) [2022-02-24 01:45:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-02-24 01:45:33,370 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 60 [2022-02-24 01:45:33,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:33,370 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-02-24 01:45:33,370 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) [2022-02-24 01:45:33,370 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-02-24 01:45:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-24 01:45:33,370 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:33,370 INFO L514 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:33,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-24 01:45:33,371 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1440450314, now seen corresponding path program 50 times [2022-02-24 01:45:33,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:33,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300160327] [2022-02-24 01:45:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:33,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:33,373 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:33,373 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:33,373 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:34,191 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:34,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300160327] [2022-02-24 01:45:34,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [300160327] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:34,192 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:34,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-02-24 01:45:34,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459365457] [2022-02-24 01:45:34,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:34,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-24 01:45:34,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-24 01:45:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-02-24 01:45:34,193 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) [2022-02-24 01:45:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:35,314 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2022-02-24 01:45:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-24 01:45:35,314 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 [2022-02-24 01:45:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:35,315 INFO L225 Difference]: With dead ends: 69 [2022-02-24 01:45:35,315 INFO L226 Difference]: Without dead ends: 65 [2022-02-24 01:45:35,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 01:45:35,316 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 [2022-02-24 01:45:35,316 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] [2022-02-24 01:45:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-24 01:45:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-02-24 01:45:35,321 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) [2022-02-24 01:45:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2022-02-24 01:45:35,321 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 61 [2022-02-24 01:45:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:35,321 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2022-02-24 01:45:35,322 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) [2022-02-24 01:45:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2022-02-24 01:45:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-24 01:45:35,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:35,322 INFO L514 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:35,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-24 01:45:35,322 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:35,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1440401495, now seen corresponding path program 51 times [2022-02-24 01:45:35,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:35,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94472689] [2022-02-24 01:45:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:35,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:35,324 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:35,324 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:35,324 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:36,116 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:36,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94472689] [2022-02-24 01:45:36,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [94472689] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:36,116 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:36,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-24 01:45:36,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500526385] [2022-02-24 01:45:36,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:36,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-24 01:45:36,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-24 01:45:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1382, Invalid=1588, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 01:45:36,117 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) [2022-02-24 01:45:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:37,443 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-02-24 01:45:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-24 01:45:37,443 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 [2022-02-24 01:45:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:37,444 INFO L225 Difference]: With dead ends: 72 [2022-02-24 01:45:37,444 INFO L226 Difference]: Without dead ends: 70 [2022-02-24 01:45:37,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4242, Invalid=7100, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 01:45:37,445 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 [2022-02-24 01:45:37,445 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] [2022-02-24 01:45:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-24 01:45:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2022-02-24 01:45:37,450 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) [2022-02-24 01:45:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2022-02-24 01:45:37,450 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61 [2022-02-24 01:45:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:37,450 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2022-02-24 01:45:37,450 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) [2022-02-24 01:45:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2022-02-24 01:45:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 01:45:37,452 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:37,452 INFO L514 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:37,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-24 01:45:37,452 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:37,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1702770314, now seen corresponding path program 51 times [2022-02-24 01:45:37,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:37,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021520653] [2022-02-24 01:45:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:37,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:37,454 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:37,454 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:37,454 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:38,602 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:38,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021520653] [2022-02-24 01:45:38,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1021520653] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:38,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:38,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-02-24 01:45:38,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565389457] [2022-02-24 01:45:38,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:38,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-24 01:45:38,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:38,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-24 01:45:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 01:45:38,616 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) [2022-02-24 01:45:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:39,378 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-02-24 01:45:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-24 01:45:39,378 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 [2022-02-24 01:45:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:39,378 INFO L225 Difference]: With dead ends: 70 [2022-02-24 01:45:39,378 INFO L226 Difference]: Without dead ends: 66 [2022-02-24 01:45:39,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 01:45:39,381 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-02-24 01:45:39,381 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] [2022-02-24 01:45:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-02-24 01:45:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-02-24 01:45:39,385 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) [2022-02-24 01:45:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2022-02-24 01:45:39,386 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 62 [2022-02-24 01:45:39,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:39,386 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2022-02-24 01:45:39,386 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) [2022-02-24 01:45:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2022-02-24 01:45:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-24 01:45:39,386 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:39,386 INFO L514 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:39,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-24 01:45:39,387 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:39,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1702721495, now seen corresponding path program 52 times [2022-02-24 01:45:39,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:39,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320329752] [2022-02-24 01:45:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:39,390 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:39,390 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:39,390 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:40,128 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:40,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320329752] [2022-02-24 01:45:40,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [320329752] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:40,128 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:40,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-24 01:45:40,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898379637] [2022-02-24 01:45:40,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:40,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-24 01:45:40,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:40,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-24 01:45:40,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=1645, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 01:45:40,132 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) [2022-02-24 01:45:41,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:41,569 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-02-24 01:45:41,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-24 01:45:41,569 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 [2022-02-24 01:45:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:41,570 INFO L225 Difference]: With dead ends: 73 [2022-02-24 01:45:41,570 INFO L226 Difference]: Without dead ends: 71 [2022-02-24 01:45:41,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4403, Invalid=7369, Unknown=0, NotChecked=0, Total=11772 [2022-02-24 01:45:41,570 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 [2022-02-24 01:45:41,571 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] [2022-02-24 01:45:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-24 01:45:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2022-02-24 01:45:41,576 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) [2022-02-24 01:45:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2022-02-24 01:45:41,577 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 62 [2022-02-24 01:45:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:41,577 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2022-02-24 01:45:41,577 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) [2022-02-24 01:45:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2022-02-24 01:45:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-24 01:45:41,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:41,577 INFO L514 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:41,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-24 01:45:41,577 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:41,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1244755722, now seen corresponding path program 52 times [2022-02-24 01:45:41,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:41,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138141010] [2022-02-24 01:45:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:41,579 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:41,579 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:41,579 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:42,536 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:42,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138141010] [2022-02-24 01:45:42,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [138141010] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:42,536 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:42,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-02-24 01:45:42,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991432817] [2022-02-24 01:45:42,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:42,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-24 01:45:42,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:42,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-24 01:45:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-02-24 01:45:42,537 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) [2022-02-24 01:45:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:43,496 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2022-02-24 01:45:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-24 01:45:43,497 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 [2022-02-24 01:45:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:43,500 INFO L225 Difference]: With dead ends: 71 [2022-02-24 01:45:43,500 INFO L226 Difference]: Without dead ends: 67 [2022-02-24 01:45:43,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-02-24 01:45:43,502 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 [2022-02-24 01:45:43,502 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] [2022-02-24 01:45:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-24 01:45:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-02-24 01:45:43,510 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) [2022-02-24 01:45:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2022-02-24 01:45:43,510 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 63 [2022-02-24 01:45:43,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:43,511 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2022-02-24 01:45:43,511 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) [2022-02-24 01:45:43,511 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2022-02-24 01:45:43,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-24 01:45:43,511 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:43,511 INFO L514 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:43,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-02-24 01:45:43,511 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:43,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:43,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1244706903, now seen corresponding path program 53 times [2022-02-24 01:45:43,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:43,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267484580] [2022-02-24 01:45:43,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:43,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:43,513 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:43,513 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:43,513 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:44,567 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:44,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267484580] [2022-02-24 01:45:44,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [267484580] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:44,567 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:44,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-24 01:45:44,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697096479] [2022-02-24 01:45:44,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:44,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-24 01:45:44,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:44,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-24 01:45:44,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1489, Invalid=1703, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 01:45:44,568 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) [2022-02-24 01:45:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:46,510 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-02-24 01:45:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-24 01:45:46,510 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 [2022-02-24 01:45:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:46,511 INFO L225 Difference]: With dead ends: 74 [2022-02-24 01:45:46,511 INFO L226 Difference]: Without dead ends: 72 [2022-02-24 01:45:46,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4567, Invalid=7643, Unknown=0, NotChecked=0, Total=12210 [2022-02-24 01:45:46,512 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 [2022-02-24 01:45:46,512 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] [2022-02-24 01:45:46,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-24 01:45:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2022-02-24 01:45:46,517 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) [2022-02-24 01:45:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-02-24 01:45:46,517 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 63 [2022-02-24 01:45:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:46,517 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-02-24 01:45:46,517 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) [2022-02-24 01:45:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-02-24 01:45:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-24 01:45:46,517 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:46,517 INFO L514 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:46,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-02-24 01:45:46,518 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:46,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:46,518 INFO L85 PathProgramCache]: Analyzing trace with hash 68794742, now seen corresponding path program 53 times [2022-02-24 01:45:46,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:46,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176907620] [2022-02-24 01:45:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:46,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:46,524 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:46,524 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:46,524 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:47,386 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:47,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176907620] [2022-02-24 01:45:47,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [176907620] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:47,386 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:47,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-02-24 01:45:47,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971836439] [2022-02-24 01:45:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:47,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-24 01:45:47,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-24 01:45:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 01:45:47,388 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) [2022-02-24 01:45:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:48,653 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-02-24 01:45:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-24 01:45:48,653 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 [2022-02-24 01:45:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:48,653 INFO L225 Difference]: With dead ends: 72 [2022-02-24 01:45:48,654 INFO L226 Difference]: Without dead ends: 68 [2022-02-24 01:45:48,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-02-24 01:45:48,655 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 [2022-02-24 01:45:48,655 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] [2022-02-24 01:45:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-24 01:45:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-02-24 01:45:48,660 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) [2022-02-24 01:45:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2022-02-24 01:45:48,660 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 64 [2022-02-24 01:45:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:48,660 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2022-02-24 01:45:48,660 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) [2022-02-24 01:45:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2022-02-24 01:45:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-24 01:45:48,661 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:48,661 INFO L514 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:48,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-02-24 01:45:48,661 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash 68843561, now seen corresponding path program 54 times [2022-02-24 01:45:48,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:48,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788073615] [2022-02-24 01:45:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:48,662 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:48,663 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:48,663 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:49,732 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:49,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788073615] [2022-02-24 01:45:49,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1788073615] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:49,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:49,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-24 01:45:49,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612651388] [2022-02-24 01:45:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:49,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-24 01:45:49,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:49,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-24 01:45:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=1762, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 01:45:49,735 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) [2022-02-24 01:45:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:51,244 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-02-24 01:45:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-24 01:45:51,244 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 [2022-02-24 01:45:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:51,244 INFO L225 Difference]: With dead ends: 75 [2022-02-24 01:45:51,244 INFO L226 Difference]: Without dead ends: 73 [2022-02-24 01:45:51,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4734, Invalid=7922, Unknown=0, NotChecked=0, Total=12656 [2022-02-24 01:45:51,245 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 [2022-02-24 01:45:51,245 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] [2022-02-24 01:45:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-24 01:45:51,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2022-02-24 01:45:51,250 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) [2022-02-24 01:45:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-02-24 01:45:51,251 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 64 [2022-02-24 01:45:51,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:51,251 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-02-24 01:45:51,251 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) [2022-02-24 01:45:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-02-24 01:45:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 01:45:51,251 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:51,252 INFO L514 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:51,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-02-24 01:45:51,253 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2134153462, now seen corresponding path program 54 times [2022-02-24 01:45:51,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:51,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497150076] [2022-02-24 01:45:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:51,256 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:51,256 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:51,256 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:52,076 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:52,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497150076] [2022-02-24 01:45:52,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1497150076] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:52,077 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:52,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-02-24 01:45:52,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606721433] [2022-02-24 01:45:52,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:52,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-24 01:45:52,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:52,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-24 01:45:52,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-02-24 01:45:52,078 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) [2022-02-24 01:45:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:53,124 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-02-24 01:45:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-24 01:45:53,124 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 [2022-02-24 01:45:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:53,125 INFO L225 Difference]: With dead ends: 73 [2022-02-24 01:45:53,125 INFO L226 Difference]: Without dead ends: 69 [2022-02-24 01:45:53,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-02-24 01:45:53,127 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 [2022-02-24 01:45:53,127 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] [2022-02-24 01:45:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-24 01:45:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-02-24 01:45:53,132 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) [2022-02-24 01:45:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2022-02-24 01:45:53,133 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 65 [2022-02-24 01:45:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:53,133 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2022-02-24 01:45:53,133 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) [2022-02-24 01:45:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2022-02-24 01:45:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 01:45:53,133 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:53,133 INFO L514 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:53,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-02-24 01:45:53,134 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2134202281, now seen corresponding path program 55 times [2022-02-24 01:45:53,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:53,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116215183] [2022-02-24 01:45:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:53,136 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:53,137 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:53,144 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:53,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:53,965 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:53,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116215183] [2022-02-24 01:45:53,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [116215183] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:53,965 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:53,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-24 01:45:53,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857000333] [2022-02-24 01:45:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:53,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-24 01:45:53,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-24 01:45:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1600, Invalid=1822, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 01:45:53,966 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) [2022-02-24 01:45:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:55,662 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-02-24 01:45:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-24 01:45:55,662 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 [2022-02-24 01:45:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:55,662 INFO L225 Difference]: With dead ends: 76 [2022-02-24 01:45:55,662 INFO L226 Difference]: Without dead ends: 74 [2022-02-24 01:45:55,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4904, Invalid=8206, Unknown=0, NotChecked=0, Total=13110 [2022-02-24 01:45:55,663 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 [2022-02-24 01:45:55,663 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] [2022-02-24 01:45:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-24 01:45:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-02-24 01:45:55,669 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) [2022-02-24 01:45:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-02-24 01:45:55,669 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 65 [2022-02-24 01:45:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:55,669 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-02-24 01:45:55,669 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) [2022-02-24 01:45:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-02-24 01:45:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 01:45:55,669 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:55,669 INFO L514 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:55,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-02-24 01:45:55,670 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:55,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1735764342, now seen corresponding path program 55 times [2022-02-24 01:45:55,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:55,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171607644] [2022-02-24 01:45:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:55,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:55,671 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:55,672 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:55,672 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:56,921 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:56,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171607644] [2022-02-24 01:45:56,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [171607644] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:56,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:56,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-02-24 01:45:56,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787859295] [2022-02-24 01:45:56,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:56,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-24 01:45:56,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-24 01:45:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 01:45:56,922 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) [2022-02-24 01:45:58,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:45:58,312 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-02-24 01:45:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-24 01:45:58,312 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 [2022-02-24 01:45:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:45:58,313 INFO L225 Difference]: With dead ends: 74 [2022-02-24 01:45:58,313 INFO L226 Difference]: Without dead ends: 70 [2022-02-24 01:45:58,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-02-24 01:45:58,314 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 [2022-02-24 01:45:58,314 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] [2022-02-24 01:45:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-24 01:45:58,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-02-24 01:45:58,319 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) [2022-02-24 01:45:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2022-02-24 01:45:58,320 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 66 [2022-02-24 01:45:58,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:45:58,320 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2022-02-24 01:45:58,320 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) [2022-02-24 01:45:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2022-02-24 01:45:58,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-24 01:45:58,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:45:58,320 INFO L514 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:45:58,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-02-24 01:45:58,320 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:45:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:45:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1735813161, now seen corresponding path program 56 times [2022-02-24 01:45:58,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:45:58,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583284548] [2022-02-24 01:45:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:45:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:45:58,322 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:45:58,322 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:45:58,322 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:45:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:45:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:45:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:45:59,551 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:45:59,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583284548] [2022-02-24 01:45:59,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1583284548] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:45:59,551 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:45:59,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-24 01:45:59,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626468378] [2022-02-24 01:45:59,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:45:59,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-24 01:45:59,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:45:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-24 01:45:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=1883, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 01:45:59,553 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) [2022-02-24 01:46:01,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:01,171 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2022-02-24 01:46:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-24 01:46:01,172 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 [2022-02-24 01:46:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:01,172 INFO L225 Difference]: With dead ends: 77 [2022-02-24 01:46:01,172 INFO L226 Difference]: Without dead ends: 75 [2022-02-24 01:46:01,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1706 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5077, Invalid=8495, Unknown=0, NotChecked=0, Total=13572 [2022-02-24 01:46:01,173 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 [2022-02-24 01:46:01,173 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] [2022-02-24 01:46:01,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-24 01:46:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-02-24 01:46:01,179 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) [2022-02-24 01:46:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-02-24 01:46:01,179 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 66 [2022-02-24 01:46:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:01,179 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-02-24 01:46:01,179 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) [2022-02-24 01:46:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-02-24 01:46:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 01:46:01,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:01,180 INFO L514 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:01,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-02-24 01:46:01,180 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:01,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2024363786, now seen corresponding path program 56 times [2022-02-24 01:46:01,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:01,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230793832] [2022-02-24 01:46:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:01,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:01,181 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:01,181 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:01,181 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:02,085 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:02,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230793832] [2022-02-24 01:46:02,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1230793832] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:02,085 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:02,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-02-24 01:46:02,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194447388] [2022-02-24 01:46:02,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:02,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-24 01:46:02,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:02,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-24 01:46:02,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-02-24 01:46:02,086 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) [2022-02-24 01:46:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:03,020 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-02-24 01:46:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-24 01:46:03,020 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 [2022-02-24 01:46:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:03,020 INFO L225 Difference]: With dead ends: 75 [2022-02-24 01:46:03,020 INFO L226 Difference]: Without dead ends: 71 [2022-02-24 01:46:03,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-02-24 01:46:03,022 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 [2022-02-24 01:46:03,022 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] [2022-02-24 01:46:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-24 01:46:03,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-02-24 01:46:03,030 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) [2022-02-24 01:46:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2022-02-24 01:46:03,030 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 67 [2022-02-24 01:46:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:03,031 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2022-02-24 01:46:03,031 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) [2022-02-24 01:46:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2022-02-24 01:46:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 01:46:03,031 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:03,031 INFO L514 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:03,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-02-24 01:46:03,031 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:03,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2024314967, now seen corresponding path program 57 times [2022-02-24 01:46:03,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:03,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604930832] [2022-02-24 01:46:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:03,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:03,033 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:03,033 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:03,033 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:04,219 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:04,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604930832] [2022-02-24 01:46:04,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1604930832] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:04,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:04,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-24 01:46:04,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158560012] [2022-02-24 01:46:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:04,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-24 01:46:04,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-24 01:46:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1715, Invalid=1945, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 01:46:04,221 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) [2022-02-24 01:46:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:05,960 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2022-02-24 01:46:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-24 01:46:05,960 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 [2022-02-24 01:46:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:05,960 INFO L225 Difference]: With dead ends: 78 [2022-02-24 01:46:05,961 INFO L226 Difference]: Without dead ends: 76 [2022-02-24 01:46:05,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5253, Invalid=8789, Unknown=0, NotChecked=0, Total=14042 [2022-02-24 01:46:05,962 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 [2022-02-24 01:46:05,962 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] [2022-02-24 01:46:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-24 01:46:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2022-02-24 01:46:05,967 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) [2022-02-24 01:46:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-02-24 01:46:05,967 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 67 [2022-02-24 01:46:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:05,967 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-02-24 01:46:05,967 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) [2022-02-24 01:46:05,967 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-02-24 01:46:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 01:46:05,968 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:05,968 INFO L514 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:05,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-02-24 01:46:05,968 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:05,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:05,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1670748534, now seen corresponding path program 57 times [2022-02-24 01:46:05,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:05,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822083560] [2022-02-24 01:46:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:05,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:05,969 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:05,969 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:05,969 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:06,959 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:06,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822083560] [2022-02-24 01:46:06,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [822083560] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:06,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:06,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-02-24 01:46:06,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210539589] [2022-02-24 01:46:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:06,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-24 01:46:06,975 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:06,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-24 01:46:06,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-02-24 01:46:06,977 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) [2022-02-24 01:46:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:07,945 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-02-24 01:46:07,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-24 01:46:07,945 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 [2022-02-24 01:46:07,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:07,946 INFO L225 Difference]: With dead ends: 76 [2022-02-24 01:46:07,946 INFO L226 Difference]: Without dead ends: 72 [2022-02-24 01:46:07,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-02-24 01:46:07,947 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 [2022-02-24 01:46:07,947 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] [2022-02-24 01:46:07,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-24 01:46:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-02-24 01:46:07,953 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) [2022-02-24 01:46:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-02-24 01:46:07,954 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 68 [2022-02-24 01:46:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:07,954 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-02-24 01:46:07,954 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) [2022-02-24 01:46:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-02-24 01:46:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 01:46:07,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:07,954 INFO L514 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:07,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-02-24 01:46:07,954 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:07,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:07,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1670797353, now seen corresponding path program 58 times [2022-02-24 01:46:07,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:07,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840022574] [2022-02-24 01:46:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:07,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:07,956 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:07,956 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:07,956 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:09,191 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:09,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840022574] [2022-02-24 01:46:09,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [840022574] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:09,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:09,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-24 01:46:09,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23585946] [2022-02-24 01:46:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:09,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-24 01:46:09,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:09,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-24 01:46:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=2008, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 01:46:09,192 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) [2022-02-24 01:46:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:11,165 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2022-02-24 01:46:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-24 01:46:11,166 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 [2022-02-24 01:46:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:11,166 INFO L225 Difference]: With dead ends: 79 [2022-02-24 01:46:11,166 INFO L226 Difference]: Without dead ends: 77 [2022-02-24 01:46:11,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1825 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5432, Invalid=9088, Unknown=0, NotChecked=0, Total=14520 [2022-02-24 01:46:11,167 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 [2022-02-24 01:46:11,167 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] [2022-02-24 01:46:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-24 01:46:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2022-02-24 01:46:11,172 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) [2022-02-24 01:46:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-02-24 01:46:11,173 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 68 [2022-02-24 01:46:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:11,173 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-02-24 01:46:11,173 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) [2022-02-24 01:46:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-02-24 01:46:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 01:46:11,173 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:11,173 INFO L514 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:11,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-02-24 01:46:11,173 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:11,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 255113462, now seen corresponding path program 58 times [2022-02-24 01:46:11,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:11,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395243790] [2022-02-24 01:46:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:11,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:11,175 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:11,175 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:11,175 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:12,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:12,430 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:12,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395243790] [2022-02-24 01:46:12,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [395243790] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:12,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:12,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-02-24 01:46:12,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375771014] [2022-02-24 01:46:12,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:12,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-24 01:46:12,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-24 01:46:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-02-24 01:46:12,432 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) [2022-02-24 01:46:13,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:13,889 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2022-02-24 01:46:13,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-24 01:46:13,889 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 [2022-02-24 01:46:13,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:13,890 INFO L225 Difference]: With dead ends: 77 [2022-02-24 01:46:13,890 INFO L226 Difference]: Without dead ends: 73 [2022-02-24 01:46:13,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-02-24 01:46:13,891 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 [2022-02-24 01:46:13,892 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] [2022-02-24 01:46:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-02-24 01:46:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-02-24 01:46:13,897 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) [2022-02-24 01:46:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2022-02-24 01:46:13,897 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 69 [2022-02-24 01:46:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:13,897 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2022-02-24 01:46:13,897 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) [2022-02-24 01:46:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2022-02-24 01:46:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 01:46:13,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:13,898 INFO L514 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:13,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-02-24 01:46:13,898 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:13,898 INFO L85 PathProgramCache]: Analyzing trace with hash 255162281, now seen corresponding path program 59 times [2022-02-24 01:46:13,898 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:13,898 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003353131] [2022-02-24 01:46:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:13,899 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:13,899 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:13,900 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:15,057 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:15,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003353131] [2022-02-24 01:46:15,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1003353131] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:15,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:15,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-24 01:46:15,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835573788] [2022-02-24 01:46:15,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:15,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-24 01:46:15,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:15,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-24 01:46:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1834, Invalid=2072, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 01:46:15,085 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) [2022-02-24 01:46:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:16,871 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-02-24 01:46:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-24 01:46:16,871 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 [2022-02-24 01:46:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:16,872 INFO L225 Difference]: With dead ends: 80 [2022-02-24 01:46:16,872 INFO L226 Difference]: Without dead ends: 78 [2022-02-24 01:46:16,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5614, Invalid=9392, Unknown=0, NotChecked=0, Total=15006 [2022-02-24 01:46:16,873 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 [2022-02-24 01:46:16,873 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] [2022-02-24 01:46:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-24 01:46:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-02-24 01:46:16,879 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) [2022-02-24 01:46:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2022-02-24 01:46:16,879 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 69 [2022-02-24 01:46:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:16,879 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2022-02-24 01:46:16,879 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) [2022-02-24 01:46:16,880 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2022-02-24 01:46:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 01:46:16,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:16,880 INFO L514 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:16,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-02-24 01:46:16,880 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash -679900810, now seen corresponding path program 59 times [2022-02-24 01:46:16,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:16,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575699585] [2022-02-24 01:46:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:16,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:16,882 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:16,882 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:16,882 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:18,151 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:18,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575699585] [2022-02-24 01:46:18,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1575699585] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:18,151 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:18,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-02-24 01:46:18,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886570309] [2022-02-24 01:46:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:18,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-24 01:46:18,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-24 01:46:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-02-24 01:46:18,153 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) [2022-02-24 01:46:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:19,456 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2022-02-24 01:46:19,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-24 01:46:19,457 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 [2022-02-24 01:46:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:19,457 INFO L225 Difference]: With dead ends: 78 [2022-02-24 01:46:19,457 INFO L226 Difference]: Without dead ends: 74 [2022-02-24 01:46:19,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-02-24 01:46:19,458 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 [2022-02-24 01:46:19,458 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] [2022-02-24 01:46:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-24 01:46:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-02-24 01:46:19,463 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) [2022-02-24 01:46:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2022-02-24 01:46:19,464 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 70 [2022-02-24 01:46:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:19,464 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2022-02-24 01:46:19,464 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) [2022-02-24 01:46:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2022-02-24 01:46:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 01:46:19,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:19,464 INFO L514 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:19,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-02-24 01:46:19,464 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash -679851991, now seen corresponding path program 60 times [2022-02-24 01:46:19,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:19,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464467513] [2022-02-24 01:46:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:19,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:19,466 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:19,466 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:19,466 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:20,586 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:20,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464467513] [2022-02-24 01:46:20,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [464467513] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:20,586 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:20,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-24 01:46:20,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900109317] [2022-02-24 01:46:20,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:20,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-24 01:46:20,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:20,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-24 01:46:20,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=2137, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 01:46:20,587 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) [2022-02-24 01:46:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:22,763 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2022-02-24 01:46:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-24 01:46:22,764 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 [2022-02-24 01:46:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:22,774 INFO L225 Difference]: With dead ends: 81 [2022-02-24 01:46:22,775 INFO L226 Difference]: Without dead ends: 79 [2022-02-24 01:46:22,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1948 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5799, Invalid=9701, Unknown=0, NotChecked=0, Total=15500 [2022-02-24 01:46:22,776 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 [2022-02-24 01:46:22,776 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] [2022-02-24 01:46:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-24 01:46:22,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2022-02-24 01:46:22,781 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) [2022-02-24 01:46:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-02-24 01:46:22,790 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 70 [2022-02-24 01:46:22,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:22,790 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-02-24 01:46:22,790 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) [2022-02-24 01:46:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-02-24 01:46:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 01:46:22,790 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:22,790 INFO L514 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:22,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-02-24 01:46:22,790 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 399427830, now seen corresponding path program 60 times [2022-02-24 01:46:22,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:22,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236648232] [2022-02-24 01:46:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:22,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:22,792 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:22,792 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:22,792 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:24,277 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:24,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236648232] [2022-02-24 01:46:24,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [236648232] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:24,277 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:24,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-02-24 01:46:24,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195731202] [2022-02-24 01:46:24,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:24,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-24 01:46:24,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:24,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-24 01:46:24,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-02-24 01:46:24,279 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) [2022-02-24 01:46:25,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:25,721 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2022-02-24 01:46:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-24 01:46:25,721 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 [2022-02-24 01:46:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:25,722 INFO L225 Difference]: With dead ends: 79 [2022-02-24 01:46:25,722 INFO L226 Difference]: Without dead ends: 75 [2022-02-24 01:46:25,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2022-02-24 01:46:25,722 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 [2022-02-24 01:46:25,722 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] [2022-02-24 01:46:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-02-24 01:46:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-02-24 01:46:25,728 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) [2022-02-24 01:46:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2022-02-24 01:46:25,728 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 71 [2022-02-24 01:46:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:25,728 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2022-02-24 01:46:25,728 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) [2022-02-24 01:46:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2022-02-24 01:46:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 01:46:25,729 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:25,729 INFO L514 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:25,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-02-24 01:46:25,729 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:25,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash 399476649, now seen corresponding path program 61 times [2022-02-24 01:46:25,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:25,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384186728] [2022-02-24 01:46:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:25,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:25,730 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:25,731 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:25,731 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:26,864 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:26,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384186728] [2022-02-24 01:46:26,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [384186728] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:26,865 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:26,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-24 01:46:26,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38192877] [2022-02-24 01:46:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:26,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-24 01:46:26,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:26,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-24 01:46:26,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1957, Invalid=2203, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 01:46:26,866 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) [2022-02-24 01:46:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:29,158 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2022-02-24 01:46:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-24 01:46:29,158 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 [2022-02-24 01:46:29,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:29,159 INFO L225 Difference]: With dead ends: 82 [2022-02-24 01:46:29,159 INFO L226 Difference]: Without dead ends: 80 [2022-02-24 01:46:29,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5987, Invalid=10015, Unknown=0, NotChecked=0, Total=16002 [2022-02-24 01:46:29,159 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 [2022-02-24 01:46:29,160 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] [2022-02-24 01:46:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-24 01:46:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2022-02-24 01:46:29,166 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) [2022-02-24 01:46:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2022-02-24 01:46:29,166 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 71 [2022-02-24 01:46:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:29,167 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2022-02-24 01:46:29,167 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) [2022-02-24 01:46:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2022-02-24 01:46:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 01:46:29,167 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:29,167 INFO L514 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:29,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-02-24 01:46:29,167 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:29,167 INFO L85 PathProgramCache]: Analyzing trace with hash -501122698, now seen corresponding path program 61 times [2022-02-24 01:46:29,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:29,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652403128] [2022-02-24 01:46:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:29,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:29,169 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:29,169 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:29,169 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:30,307 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:30,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652403128] [2022-02-24 01:46:30,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1652403128] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:30,307 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:30,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-02-24 01:46:30,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88559273] [2022-02-24 01:46:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:30,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-24 01:46:30,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:30,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-24 01:46:30,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-02-24 01:46:30,309 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) [2022-02-24 01:46:31,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:31,327 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-02-24 01:46:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-24 01:46:31,328 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 [2022-02-24 01:46:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:31,328 INFO L225 Difference]: With dead ends: 80 [2022-02-24 01:46:31,328 INFO L226 Difference]: Without dead ends: 76 [2022-02-24 01:46:31,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2022-02-24 01:46:31,330 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 [2022-02-24 01:46:31,330 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] [2022-02-24 01:46:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-24 01:46:31,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-02-24 01:46:31,345 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) [2022-02-24 01:46:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2022-02-24 01:46:31,346 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 72 [2022-02-24 01:46:31,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:31,346 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2022-02-24 01:46:31,346 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) [2022-02-24 01:46:31,346 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2022-02-24 01:46:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 01:46:31,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:31,346 INFO L514 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:31,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-02-24 01:46:31,347 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash -501073879, now seen corresponding path program 62 times [2022-02-24 01:46:31,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:31,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637857561] [2022-02-24 01:46:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:31,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:31,348 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:31,348 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:31,348 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:32,355 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:32,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637857561] [2022-02-24 01:46:32,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1637857561] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:32,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:32,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-24 01:46:32,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252490978] [2022-02-24 01:46:32,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:32,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-24 01:46:32,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-24 01:46:32,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=2270, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 01:46:32,357 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) [2022-02-24 01:46:34,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:34,216 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2022-02-24 01:46:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-24 01:46:34,216 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 [2022-02-24 01:46:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:34,216 INFO L225 Difference]: With dead ends: 83 [2022-02-24 01:46:34,216 INFO L226 Difference]: Without dead ends: 81 [2022-02-24 01:46:34,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6178, Invalid=10334, Unknown=0, NotChecked=0, Total=16512 [2022-02-24 01:46:34,218 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 [2022-02-24 01:46:34,218 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] [2022-02-24 01:46:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-24 01:46:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2022-02-24 01:46:34,224 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) [2022-02-24 01:46:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2022-02-24 01:46:34,224 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 72 [2022-02-24 01:46:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:34,224 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2022-02-24 01:46:34,224 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) [2022-02-24 01:46:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2022-02-24 01:46:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 01:46:34,225 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:34,225 INFO L514 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:34,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-02-24 01:46:34,225 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1646582006, now seen corresponding path program 62 times [2022-02-24 01:46:34,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:34,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522109856] [2022-02-24 01:46:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:34,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:34,227 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:34,227 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:34,227 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:35,522 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:35,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522109856] [2022-02-24 01:46:35,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [522109856] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:35,522 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:35,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-02-24 01:46:35,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40939637] [2022-02-24 01:46:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:35,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-24 01:46:35,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-24 01:46:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-02-24 01:46:35,524 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) [2022-02-24 01:46:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:36,627 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2022-02-24 01:46:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-24 01:46:36,627 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 [2022-02-24 01:46:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:36,627 INFO L225 Difference]: With dead ends: 81 [2022-02-24 01:46:36,627 INFO L226 Difference]: Without dead ends: 77 [2022-02-24 01:46:36,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2022-02-24 01:46:36,631 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 [2022-02-24 01:46:36,631 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] [2022-02-24 01:46:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-24 01:46:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-02-24 01:46:36,637 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) [2022-02-24 01:46:36,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-02-24 01:46:36,637 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 73 [2022-02-24 01:46:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:36,637 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-02-24 01:46:36,637 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) [2022-02-24 01:46:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-02-24 01:46:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 01:46:36,638 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:36,638 INFO L514 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:36,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-02-24 01:46:36,638 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:36,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1646630825, now seen corresponding path program 63 times [2022-02-24 01:46:36,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:36,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928174767] [2022-02-24 01:46:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:36,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:36,639 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:36,640 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:36,640 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:38,018 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:38,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928174767] [2022-02-24 01:46:38,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [928174767] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:38,018 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:38,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-24 01:46:38,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375585759] [2022-02-24 01:46:38,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:38,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-24 01:46:38,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:38,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-24 01:46:38,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2084, Invalid=2338, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 01:46:38,020 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) [2022-02-24 01:46:40,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:40,105 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-02-24 01:46:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-24 01:46:40,105 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 [2022-02-24 01:46:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:40,118 INFO L225 Difference]: With dead ends: 84 [2022-02-24 01:46:40,119 INFO L226 Difference]: Without dead ends: 82 [2022-02-24 01:46:40,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6372, Invalid=10658, Unknown=0, NotChecked=0, Total=17030 [2022-02-24 01:46:40,120 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 [2022-02-24 01:46:40,120 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] [2022-02-24 01:46:40,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-02-24 01:46:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2022-02-24 01:46:40,126 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) [2022-02-24 01:46:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2022-02-24 01:46:40,126 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 73 [2022-02-24 01:46:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:40,127 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2022-02-24 01:46:40,127 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) [2022-02-24 01:46:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2022-02-24 01:46:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 01:46:40,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:40,127 INFO L514 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:40,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-02-24 01:46:40,127 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:40,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash -494048906, now seen corresponding path program 63 times [2022-02-24 01:46:40,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:40,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269447912] [2022-02-24 01:46:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:40,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:40,129 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:40,129 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:40,129 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:41,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:41,328 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:41,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269447912] [2022-02-24 01:46:41,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [269447912] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:41,328 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:41,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-02-24 01:46:41,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562874364] [2022-02-24 01:46:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:41,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-24 01:46:41,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-24 01:46:41,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-02-24 01:46:41,330 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) [2022-02-24 01:46:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:42,619 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2022-02-24 01:46:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-24 01:46:42,620 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 [2022-02-24 01:46:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:42,620 INFO L225 Difference]: With dead ends: 82 [2022-02-24 01:46:42,620 INFO L226 Difference]: Without dead ends: 78 [2022-02-24 01:46:42,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2022-02-24 01:46:42,622 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 [2022-02-24 01:46:42,622 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] [2022-02-24 01:46:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-24 01:46:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-02-24 01:46:42,628 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) [2022-02-24 01:46:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2022-02-24 01:46:42,628 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 74 [2022-02-24 01:46:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:42,628 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2022-02-24 01:46:42,628 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) [2022-02-24 01:46:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2022-02-24 01:46:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 01:46:42,628 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:42,629 INFO L514 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:42,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-02-24 01:46:42,629 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:42,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash -494000087, now seen corresponding path program 64 times [2022-02-24 01:46:42,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:42,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776351764] [2022-02-24 01:46:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:42,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:42,631 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:42,631 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:42,631 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:43,710 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:43,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776351764] [2022-02-24 01:46:43,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1776351764] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:43,710 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:43,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-24 01:46:43,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925563450] [2022-02-24 01:46:43,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:43,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-24 01:46:43,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:43,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-24 01:46:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=2407, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 01:46:43,712 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) [2022-02-24 01:46:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:46,073 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2022-02-24 01:46:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-24 01:46:46,074 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 [2022-02-24 01:46:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:46,074 INFO L225 Difference]: With dead ends: 85 [2022-02-24 01:46:46,074 INFO L226 Difference]: Without dead ends: 83 [2022-02-24 01:46:46,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2206 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6569, Invalid=10987, Unknown=0, NotChecked=0, Total=17556 [2022-02-24 01:46:46,076 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 [2022-02-24 01:46:46,076 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] [2022-02-24 01:46:46,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-02-24 01:46:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2022-02-24 01:46:46,092 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) [2022-02-24 01:46:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-02-24 01:46:46,092 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 74 [2022-02-24 01:46:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:46,092 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-02-24 01:46:46,092 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) [2022-02-24 01:46:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-02-24 01:46:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 01:46:46,093 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:46,093 INFO L514 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:46,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-02-24 01:46:46,093 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:46,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1865869558, now seen corresponding path program 64 times [2022-02-24 01:46:46,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:46,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902139883] [2022-02-24 01:46:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:46,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:46,095 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:46,095 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:46,095 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:47,866 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:47,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902139883] [2022-02-24 01:46:47,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1902139883] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:47,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:47,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-02-24 01:46:47,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703548094] [2022-02-24 01:46:47,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:47,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-24 01:46:47,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-24 01:46:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-02-24 01:46:47,867 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) [2022-02-24 01:46:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:49,676 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2022-02-24 01:46:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-24 01:46:49,677 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 [2022-02-24 01:46:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:49,677 INFO L225 Difference]: With dead ends: 83 [2022-02-24 01:46:49,677 INFO L226 Difference]: Without dead ends: 79 [2022-02-24 01:46:49,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2022-02-24 01:46:49,679 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 [2022-02-24 01:46:49,679 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] [2022-02-24 01:46:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-02-24 01:46:49,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-02-24 01:46:49,685 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) [2022-02-24 01:46:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2022-02-24 01:46:49,686 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 75 [2022-02-24 01:46:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:49,686 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2022-02-24 01:46:49,686 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) [2022-02-24 01:46:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2022-02-24 01:46:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 01:46:49,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:49,686 INFO L514 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:49,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-02-24 01:46:49,686 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1865918377, now seen corresponding path program 65 times [2022-02-24 01:46:49,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:49,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131652916] [2022-02-24 01:46:49,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:49,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:49,688 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:49,688 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:49,688 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:50,749 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:50,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131652916] [2022-02-24 01:46:50,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1131652916] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:50,760 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:50,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-24 01:46:50,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121904073] [2022-02-24 01:46:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:50,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-24 01:46:50,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-24 01:46:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2215, Invalid=2477, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 01:46:50,761 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) [2022-02-24 01:46:52,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:52,804 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-02-24 01:46:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-24 01:46:52,805 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 [2022-02-24 01:46:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:52,805 INFO L225 Difference]: With dead ends: 86 [2022-02-24 01:46:52,805 INFO L226 Difference]: Without dead ends: 84 [2022-02-24 01:46:52,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6769, Invalid=11321, Unknown=0, NotChecked=0, Total=18090 [2022-02-24 01:46:52,806 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 [2022-02-24 01:46:52,806 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] [2022-02-24 01:46:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-24 01:46:52,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2022-02-24 01:46:52,812 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) [2022-02-24 01:46:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-02-24 01:46:52,812 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 75 [2022-02-24 01:46:52,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:52,812 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-02-24 01:46:52,812 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) [2022-02-24 01:46:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-02-24 01:46:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 01:46:52,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:52,812 INFO L514 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:52,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-02-24 01:46:52,813 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:52,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:52,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2008897910, now seen corresponding path program 65 times [2022-02-24 01:46:52,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:52,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623029374] [2022-02-24 01:46:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:52,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:52,814 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:52,814 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:52,814 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:53,931 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:53,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623029374] [2022-02-24 01:46:53,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [623029374] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:53,931 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:53,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-02-24 01:46:53,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765212109] [2022-02-24 01:46:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:53,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-24 01:46:53,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-24 01:46:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-02-24 01:46:53,933 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) [2022-02-24 01:46:55,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:46:55,469 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-02-24 01:46:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-24 01:46:55,470 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 [2022-02-24 01:46:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:46:55,470 INFO L225 Difference]: With dead ends: 84 [2022-02-24 01:46:55,470 INFO L226 Difference]: Without dead ends: 80 [2022-02-24 01:46:55,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2022-02-24 01:46:55,471 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 [2022-02-24 01:46:55,471 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] [2022-02-24 01:46:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-24 01:46:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-02-24 01:46:55,477 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) [2022-02-24 01:46:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2022-02-24 01:46:55,477 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 76 [2022-02-24 01:46:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:46:55,477 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2022-02-24 01:46:55,477 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) [2022-02-24 01:46:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2022-02-24 01:46:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 01:46:55,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:46:55,478 INFO L514 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:46:55,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-02-24 01:46:55,478 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:46:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:46:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2008946729, now seen corresponding path program 66 times [2022-02-24 01:46:55,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:46:55,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088558967] [2022-02-24 01:46:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:46:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:46:55,481 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:46:55,482 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:46:55,482 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:46:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:46:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:46:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:46:57,345 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:46:57,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088558967] [2022-02-24 01:46:57,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1088558967] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:46:57,345 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:46:57,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-24 01:46:57,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363487037] [2022-02-24 01:46:57,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:46:57,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-24 01:46:57,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:46:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-24 01:46:57,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=2548, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 01:46:57,346 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) [2022-02-24 01:47:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:00,233 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2022-02-24 01:47:00,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-24 01:47:00,233 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 [2022-02-24 01:47:00,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:00,233 INFO L225 Difference]: With dead ends: 87 [2022-02-24 01:47:00,233 INFO L226 Difference]: Without dead ends: 85 [2022-02-24 01:47:00,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6972, Invalid=11660, Unknown=0, NotChecked=0, Total=18632 [2022-02-24 01:47:00,235 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 [2022-02-24 01:47:00,235 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] [2022-02-24 01:47:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-24 01:47:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2022-02-24 01:47:00,240 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) [2022-02-24 01:47:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2022-02-24 01:47:00,241 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76 [2022-02-24 01:47:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:00,241 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2022-02-24 01:47:00,241 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) [2022-02-24 01:47:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2022-02-24 01:47:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-24 01:47:00,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:00,241 INFO L514 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:00,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-02-24 01:47:00,241 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:00,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:00,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2147157770, now seen corresponding path program 66 times [2022-02-24 01:47:00,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:00,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620642856] [2022-02-24 01:47:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:00,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:00,243 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:00,243 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:00,243 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:02,112 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:02,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620642856] [2022-02-24 01:47:02,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1620642856] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:02,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:02,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-02-24 01:47:02,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813228294] [2022-02-24 01:47:02,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:02,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-24 01:47:02,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-24 01:47:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-02-24 01:47:02,114 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) [2022-02-24 01:47:04,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:04,032 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2022-02-24 01:47:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-24 01:47:04,032 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 [2022-02-24 01:47:04,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:04,033 INFO L225 Difference]: With dead ends: 85 [2022-02-24 01:47:04,033 INFO L226 Difference]: Without dead ends: 81 [2022-02-24 01:47:04,034 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 [2022-02-24 01:47:04,034 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 [2022-02-24 01:47:04,034 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] [2022-02-24 01:47:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-24 01:47:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-02-24 01:47:04,040 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) [2022-02-24 01:47:04,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2022-02-24 01:47:04,040 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 77 [2022-02-24 01:47:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:04,040 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2022-02-24 01:47:04,040 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) [2022-02-24 01:47:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2022-02-24 01:47:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-24 01:47:04,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:04,041 INFO L514 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:04,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-02-24 01:47:04,041 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:04,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2147108951, now seen corresponding path program 67 times [2022-02-24 01:47:04,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:04,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762115566] [2022-02-24 01:47:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:04,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:04,042 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:04,042 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:04,042 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:05,205 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:05,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762115566] [2022-02-24 01:47:05,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1762115566] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:05,206 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:05,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-24 01:47:05,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091648253] [2022-02-24 01:47:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:05,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-24 01:47:05,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-24 01:47:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2350, Invalid=2620, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 01:47:05,207 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) [2022-02-24 01:47:07,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:07,589 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-02-24 01:47:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-24 01:47:07,589 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 [2022-02-24 01:47:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:07,590 INFO L225 Difference]: With dead ends: 88 [2022-02-24 01:47:07,590 INFO L226 Difference]: Without dead ends: 86 [2022-02-24 01:47:07,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7178, Invalid=12004, Unknown=0, NotChecked=0, Total=19182 [2022-02-24 01:47:07,591 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 [2022-02-24 01:47:07,591 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] [2022-02-24 01:47:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-24 01:47:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2022-02-24 01:47:07,597 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) [2022-02-24 01:47:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2022-02-24 01:47:07,597 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 77 [2022-02-24 01:47:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:07,597 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2022-02-24 01:47:07,598 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) [2022-02-24 01:47:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2022-02-24 01:47:07,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 01:47:07,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:07,598 INFO L514 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:07,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-02-24 01:47:07,598 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2135864970, now seen corresponding path program 67 times [2022-02-24 01:47:07,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:07,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568659583] [2022-02-24 01:47:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:07,605 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:07,605 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:07,605 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:09,537 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:09,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568659583] [2022-02-24 01:47:09,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [568659583] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:09,537 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:09,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-02-24 01:47:09,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481940921] [2022-02-24 01:47:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:09,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-24 01:47:09,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-24 01:47:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-02-24 01:47:09,538 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) [2022-02-24 01:47:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:11,095 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-02-24 01:47:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-24 01:47:11,096 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 [2022-02-24 01:47:11,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:11,096 INFO L225 Difference]: With dead ends: 86 [2022-02-24 01:47:11,096 INFO L226 Difference]: Without dead ends: 82 [2022-02-24 01:47:11,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-02-24 01:47:11,098 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 [2022-02-24 01:47:11,098 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] [2022-02-24 01:47:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-02-24 01:47:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-02-24 01:47:11,104 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) [2022-02-24 01:47:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2022-02-24 01:47:11,104 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 78 [2022-02-24 01:47:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:11,104 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2022-02-24 01:47:11,104 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) [2022-02-24 01:47:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2022-02-24 01:47:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 01:47:11,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:11,105 INFO L514 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:11,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-02-24 01:47:11,105 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:11,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2135816151, now seen corresponding path program 68 times [2022-02-24 01:47:11,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:11,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417545630] [2022-02-24 01:47:11,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:11,109 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:11,109 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:11,109 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:12,453 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:12,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417545630] [2022-02-24 01:47:12,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [417545630] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:12,456 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:12,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-24 01:47:12,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556907949] [2022-02-24 01:47:12,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:12,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-24 01:47:12,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:12,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-24 01:47:12,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=2693, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 01:47:12,457 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) [2022-02-24 01:47:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:15,293 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-02-24 01:47:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-24 01:47:15,293 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 [2022-02-24 01:47:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:15,293 INFO L225 Difference]: With dead ends: 89 [2022-02-24 01:47:15,293 INFO L226 Difference]: Without dead ends: 87 [2022-02-24 01:47:15,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7387, Invalid=12353, Unknown=0, NotChecked=0, Total=19740 [2022-02-24 01:47:15,295 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 [2022-02-24 01:47:15,295 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] [2022-02-24 01:47:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-24 01:47:15,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2022-02-24 01:47:15,301 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) [2022-02-24 01:47:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-02-24 01:47:15,301 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2022-02-24 01:47:15,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:15,301 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-02-24 01:47:15,301 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) [2022-02-24 01:47:15,301 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-02-24 01:47:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 01:47:15,301 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:15,301 INFO L514 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:15,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-02-24 01:47:15,302 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:15,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:15,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1785788170, now seen corresponding path program 68 times [2022-02-24 01:47:15,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:15,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356165632] [2022-02-24 01:47:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:15,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:15,303 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:15,303 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:17,169 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:17,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356165632] [2022-02-24 01:47:17,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1356165632] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:17,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:17,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-02-24 01:47:17,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667607167] [2022-02-24 01:47:17,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:17,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-24 01:47:17,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:17,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-24 01:47:17,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-02-24 01:47:17,171 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) [2022-02-24 01:47:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:19,043 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2022-02-24 01:47:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-24 01:47:19,043 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 [2022-02-24 01:47:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:19,043 INFO L225 Difference]: With dead ends: 87 [2022-02-24 01:47:19,043 INFO L226 Difference]: Without dead ends: 83 [2022-02-24 01:47:19,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2022-02-24 01:47:19,045 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 [2022-02-24 01:47:19,045 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] [2022-02-24 01:47:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-02-24 01:47:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-02-24 01:47:19,051 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) [2022-02-24 01:47:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2022-02-24 01:47:19,051 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 79 [2022-02-24 01:47:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:19,051 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2022-02-24 01:47:19,051 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) [2022-02-24 01:47:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2022-02-24 01:47:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 01:47:19,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:19,052 INFO L514 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:19,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-02-24 01:47:19,052 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1785739351, now seen corresponding path program 69 times [2022-02-24 01:47:19,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:19,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658267630] [2022-02-24 01:47:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:19,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:19,053 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:19,054 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:19,054 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:20,241 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:20,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658267630] [2022-02-24 01:47:20,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1658267630] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:20,241 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:20,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-24 01:47:20,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773850122] [2022-02-24 01:47:20,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:20,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-24 01:47:20,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-24 01:47:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2489, Invalid=2767, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 01:47:20,243 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) [2022-02-24 01:47:22,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:22,699 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-02-24 01:47:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-24 01:47:22,699 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 [2022-02-24 01:47:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:22,699 INFO L225 Difference]: With dead ends: 90 [2022-02-24 01:47:22,699 INFO L226 Difference]: Without dead ends: 88 [2022-02-24 01:47:22,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7599, Invalid=12707, Unknown=0, NotChecked=0, Total=20306 [2022-02-24 01:47:22,700 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 [2022-02-24 01:47:22,700 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] [2022-02-24 01:47:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-02-24 01:47:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2022-02-24 01:47:22,706 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) [2022-02-24 01:47:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-02-24 01:47:22,707 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 79 [2022-02-24 01:47:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:22,707 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-02-24 01:47:22,707 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) [2022-02-24 01:47:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-02-24 01:47:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 01:47:22,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:22,713 INFO L514 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:22,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-02-24 01:47:22,714 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:22,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:22,714 INFO L85 PathProgramCache]: Analyzing trace with hash 476658038, now seen corresponding path program 69 times [2022-02-24 01:47:22,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:22,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824124004] [2022-02-24 01:47:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:22,715 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:22,715 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:22,715 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:24,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:24,741 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:24,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824124004] [2022-02-24 01:47:24,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1824124004] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:24,741 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:24,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-02-24 01:47:24,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452127758] [2022-02-24 01:47:24,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-24 01:47:24,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-24 01:47:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-02-24 01:47:24,743 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) [2022-02-24 01:47:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:26,496 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-02-24 01:47:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-24 01:47:26,497 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 [2022-02-24 01:47:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:26,499 INFO L225 Difference]: With dead ends: 88 [2022-02-24 01:47:26,499 INFO L226 Difference]: Without dead ends: 84 [2022-02-24 01:47:26,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2022-02-24 01:47:26,500 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 [2022-02-24 01:47:26,500 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] [2022-02-24 01:47:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-24 01:47:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-02-24 01:47:26,521 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) [2022-02-24 01:47:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2022-02-24 01:47:26,521 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 80 [2022-02-24 01:47:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:26,521 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2022-02-24 01:47:26,521 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) [2022-02-24 01:47:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2022-02-24 01:47:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 01:47:26,522 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:26,522 INFO L514 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:26,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-02-24 01:47:26,522 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:26,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash 476706857, now seen corresponding path program 70 times [2022-02-24 01:47:26,522 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:26,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653908508] [2022-02-24 01:47:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:26,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:26,523 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:26,523 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:26,524 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:27,785 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:27,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653908508] [2022-02-24 01:47:27,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1653908508] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:27,786 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:27,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-24 01:47:27,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772348503] [2022-02-24 01:47:27,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:27,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-24 01:47:27,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:27,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-24 01:47:27,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=2842, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 01:47:27,787 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) [2022-02-24 01:47:30,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:30,874 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2022-02-24 01:47:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-24 01:47:30,875 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 [2022-02-24 01:47:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:30,875 INFO L225 Difference]: With dead ends: 91 [2022-02-24 01:47:30,875 INFO L226 Difference]: Without dead ends: 89 [2022-02-24 01:47:30,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2623 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=7814, Invalid=13066, Unknown=0, NotChecked=0, Total=20880 [2022-02-24 01:47:30,877 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 [2022-02-24 01:47:30,877 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] [2022-02-24 01:47:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-24 01:47:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-02-24 01:47:30,883 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) [2022-02-24 01:47:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-02-24 01:47:30,883 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 80 [2022-02-24 01:47:30,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:30,883 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-02-24 01:47:30,883 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) [2022-02-24 01:47:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-02-24 01:47:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-24 01:47:30,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:30,887 INFO L514 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:30,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-02-24 01:47:30,888 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1893013750, now seen corresponding path program 70 times [2022-02-24 01:47:30,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:30,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232602642] [2022-02-24 01:47:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:30,889 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:30,889 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:30,889 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:32,391 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:32,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232602642] [2022-02-24 01:47:32,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [232602642] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:32,391 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:32,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-02-24 01:47:32,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980166848] [2022-02-24 01:47:32,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:32,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-24 01:47:32,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:32,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-24 01:47:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-02-24 01:47:32,393 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) [2022-02-24 01:47:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:33,867 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-02-24 01:47:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-24 01:47:33,868 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 [2022-02-24 01:47:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:33,868 INFO L225 Difference]: With dead ends: 89 [2022-02-24 01:47:33,868 INFO L226 Difference]: Without dead ends: 85 [2022-02-24 01:47:33,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2022-02-24 01:47:33,869 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 [2022-02-24 01:47:33,869 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] [2022-02-24 01:47:33,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-02-24 01:47:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-02-24 01:47:33,875 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) [2022-02-24 01:47:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-02-24 01:47:33,875 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 81 [2022-02-24 01:47:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:33,875 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-02-24 01:47:33,875 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) [2022-02-24 01:47:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-02-24 01:47:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-24 01:47:33,876 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:33,876 INFO L514 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:33,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-02-24 01:47:33,876 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1893062569, now seen corresponding path program 71 times [2022-02-24 01:47:33,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:33,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242161782] [2022-02-24 01:47:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:33,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:33,877 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:33,877 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:33,877 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:35,417 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:35,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242161782] [2022-02-24 01:47:35,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1242161782] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:35,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:35,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-24 01:47:35,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545600450] [2022-02-24 01:47:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:35,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-24 01:47:35,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-24 01:47:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2632, Invalid=2918, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 01:47:35,419 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) [2022-02-24 01:47:38,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:38,575 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-02-24 01:47:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-24 01:47:38,576 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 [2022-02-24 01:47:38,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:38,576 INFO L225 Difference]: With dead ends: 92 [2022-02-24 01:47:38,576 INFO L226 Difference]: Without dead ends: 90 [2022-02-24 01:47:38,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2696 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8032, Invalid=13430, Unknown=0, NotChecked=0, Total=21462 [2022-02-24 01:47:38,577 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 [2022-02-24 01:47:38,577 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] [2022-02-24 01:47:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-24 01:47:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2022-02-24 01:47:38,584 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) [2022-02-24 01:47:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2022-02-24 01:47:38,584 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 81 [2022-02-24 01:47:38,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:38,584 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2022-02-24 01:47:38,584 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) [2022-02-24 01:47:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2022-02-24 01:47:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-24 01:47:38,584 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:38,584 INFO L514 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:38,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-02-24 01:47:38,585 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1444599434, now seen corresponding path program 71 times [2022-02-24 01:47:38,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:38,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076203909] [2022-02-24 01:47:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:38,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:38,586 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:38,586 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:38,586 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:40,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:40,761 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:40,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076203909] [2022-02-24 01:47:40,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2076203909] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:40,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:40,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-02-24 01:47:40,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528500326] [2022-02-24 01:47:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:40,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-24 01:47:40,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-24 01:47:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-02-24 01:47:40,762 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) [2022-02-24 01:47:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:42,657 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-02-24 01:47:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-24 01:47:42,657 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 [2022-02-24 01:47:42,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:42,657 INFO L225 Difference]: With dead ends: 90 [2022-02-24 01:47:42,658 INFO L226 Difference]: Without dead ends: 86 [2022-02-24 01:47:42,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2022-02-24 01:47:42,658 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 [2022-02-24 01:47:42,659 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] [2022-02-24 01:47:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-24 01:47:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-02-24 01:47:42,665 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) [2022-02-24 01:47:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2022-02-24 01:47:42,665 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 82 [2022-02-24 01:47:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:42,665 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2022-02-24 01:47:42,665 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) [2022-02-24 01:47:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2022-02-24 01:47:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-24 01:47:42,665 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:42,666 INFO L514 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:42,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-02-24 01:47:42,666 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:42,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:42,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1444550615, now seen corresponding path program 72 times [2022-02-24 01:47:42,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:42,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707701156] [2022-02-24 01:47:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:42,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:42,667 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:42,667 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:42,667 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:43,940 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:43,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707701156] [2022-02-24 01:47:43,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1707701156] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:43,940 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:43,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-24 01:47:43,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504476092] [2022-02-24 01:47:43,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:43,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-24 01:47:43,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:43,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-24 01:47:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=2995, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 01:47:43,942 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) [2022-02-24 01:47:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:47,188 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2022-02-24 01:47:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-24 01:47:47,189 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 [2022-02-24 01:47:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:47,189 INFO L225 Difference]: With dead ends: 93 [2022-02-24 01:47:47,189 INFO L226 Difference]: Without dead ends: 91 [2022-02-24 01:47:47,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2770 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=8253, Invalid=13799, Unknown=0, NotChecked=0, Total=22052 [2022-02-24 01:47:47,191 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 [2022-02-24 01:47:47,191 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] [2022-02-24 01:47:47,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-24 01:47:47,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2022-02-24 01:47:47,203 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) [2022-02-24 01:47:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-02-24 01:47:47,203 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82 [2022-02-24 01:47:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:47,203 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-02-24 01:47:47,203 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) [2022-02-24 01:47:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-02-24 01:47:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-24 01:47:47,203 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:47,203 INFO L514 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:47,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-02-24 01:47:47,204 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1831393034, now seen corresponding path program 72 times [2022-02-24 01:47:47,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:47,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618740752] [2022-02-24 01:47:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:47,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:47,205 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:47,205 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:47,205 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:48,668 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:48,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618740752] [2022-02-24 01:47:48,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1618740752] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:48,668 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:48,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-02-24 01:47:48,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328989605] [2022-02-24 01:47:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:48,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-24 01:47:48,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-24 01:47:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-02-24 01:47:48,670 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) [2022-02-24 01:47:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:50,684 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2022-02-24 01:47:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-24 01:47:50,684 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 [2022-02-24 01:47:50,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:50,684 INFO L225 Difference]: With dead ends: 91 [2022-02-24 01:47:50,684 INFO L226 Difference]: Without dead ends: 87 [2022-02-24 01:47:50,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2022-02-24 01:47:50,686 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 [2022-02-24 01:47:50,686 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] [2022-02-24 01:47:50,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-02-24 01:47:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-02-24 01:47:50,692 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) [2022-02-24 01:47:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2022-02-24 01:47:50,692 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 83 [2022-02-24 01:47:50,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:50,693 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2022-02-24 01:47:50,693 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) [2022-02-24 01:47:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2022-02-24 01:47:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-24 01:47:50,693 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:50,693 INFO L514 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:50,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-02-24 01:47:50,693 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1831344215, now seen corresponding path program 73 times [2022-02-24 01:47:50,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:50,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278879678] [2022-02-24 01:47:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:50,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:50,700 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:50,701 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:50,701 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:52,565 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:52,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278879678] [2022-02-24 01:47:52,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [278879678] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:52,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:52,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-24 01:47:52,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414870572] [2022-02-24 01:47:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:52,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-24 01:47:52,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-24 01:47:52,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2779, Invalid=3073, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 01:47:52,567 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) [2022-02-24 01:47:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:47:55,814 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2022-02-24 01:47:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-24 01:47:55,815 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 [2022-02-24 01:47:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:47:55,823 INFO L225 Difference]: With dead ends: 94 [2022-02-24 01:47:55,823 INFO L226 Difference]: Without dead ends: 92 [2022-02-24 01:47:55,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2845 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=8477, Invalid=14173, Unknown=0, NotChecked=0, Total=22650 [2022-02-24 01:47:55,824 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 [2022-02-24 01:47:55,825 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] [2022-02-24 01:47:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-02-24 01:47:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2022-02-24 01:47:55,836 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) [2022-02-24 01:47:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-02-24 01:47:55,837 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 83 [2022-02-24 01:47:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:47:55,837 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-02-24 01:47:55,837 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) [2022-02-24 01:47:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-02-24 01:47:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 01:47:55,837 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:47:55,837 INFO L514 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:47:55,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-02-24 01:47:55,838 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:47:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:47:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -937092746, now seen corresponding path program 73 times [2022-02-24 01:47:55,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:47:55,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72578412] [2022-02-24 01:47:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:47:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:47:55,842 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:47:55,842 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:47:55,842 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:47:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:47:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:47:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:47:57,888 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:47:57,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72578412] [2022-02-24 01:47:57,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [72578412] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:47:57,889 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:47:57,889 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-02-24 01:47:57,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424268097] [2022-02-24 01:47:57,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:47:57,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-24 01:47:57,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:47:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-24 01:47:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-02-24 01:47:57,890 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) [2022-02-24 01:48:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:00,097 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-02-24 01:48:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-24 01:48:00,097 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 [2022-02-24 01:48:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:00,098 INFO L225 Difference]: With dead ends: 92 [2022-02-24 01:48:00,098 INFO L226 Difference]: Without dead ends: 88 [2022-02-24 01:48:00,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2022-02-24 01:48:00,099 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 [2022-02-24 01:48:00,099 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] [2022-02-24 01:48:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-02-24 01:48:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-02-24 01:48:00,106 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) [2022-02-24 01:48:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2022-02-24 01:48:00,106 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 84 [2022-02-24 01:48:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:00,106 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2022-02-24 01:48:00,106 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) [2022-02-24 01:48:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2022-02-24 01:48:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 01:48:00,106 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:00,106 INFO L514 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:00,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-02-24 01:48:00,107 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash -937043927, now seen corresponding path program 74 times [2022-02-24 01:48:00,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:00,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854034790] [2022-02-24 01:48:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:00,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:00,108 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:00,108 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:00,108 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:01,888 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:01,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854034790] [2022-02-24 01:48:01,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [854034790] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:01,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:01,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-24 01:48:01,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135496347] [2022-02-24 01:48:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:01,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-24 01:48:01,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:01,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-24 01:48:01,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=3152, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 01:48:01,890 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) [2022-02-24 01:48:04,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:04,403 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2022-02-24 01:48:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-24 01:48:04,403 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 [2022-02-24 01:48:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:04,404 INFO L225 Difference]: With dead ends: 95 [2022-02-24 01:48:04,404 INFO L226 Difference]: Without dead ends: 93 [2022-02-24 01:48:04,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2921 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=8704, Invalid=14552, Unknown=0, NotChecked=0, Total=23256 [2022-02-24 01:48:04,405 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 [2022-02-24 01:48:04,405 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] [2022-02-24 01:48:04,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-24 01:48:04,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2022-02-24 01:48:04,411 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) [2022-02-24 01:48:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2022-02-24 01:48:04,412 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 84 [2022-02-24 01:48:04,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:04,412 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2022-02-24 01:48:04,412 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) [2022-02-24 01:48:04,412 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2022-02-24 01:48:04,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-24 01:48:04,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:04,412 INFO L514 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:04,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-02-24 01:48:04,412 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1016412406, now seen corresponding path program 74 times [2022-02-24 01:48:04,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:04,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112251851] [2022-02-24 01:48:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:04,414 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:04,414 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:04,414 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:06,680 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:06,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112251851] [2022-02-24 01:48:06,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2112251851] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:06,681 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:06,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-02-24 01:48:06,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181897861] [2022-02-24 01:48:06,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:06,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-24 01:48:06,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-24 01:48:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-02-24 01:48:06,683 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) [2022-02-24 01:48:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:09,017 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2022-02-24 01:48:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-24 01:48:09,018 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 [2022-02-24 01:48:09,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:09,018 INFO L225 Difference]: With dead ends: 93 [2022-02-24 01:48:09,018 INFO L226 Difference]: Without dead ends: 89 [2022-02-24 01:48:09,020 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 [2022-02-24 01:48:09,020 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 [2022-02-24 01:48:09,020 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] [2022-02-24 01:48:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-24 01:48:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-02-24 01:48:09,026 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) [2022-02-24 01:48:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2022-02-24 01:48:09,026 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 85 [2022-02-24 01:48:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:09,027 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2022-02-24 01:48:09,027 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) [2022-02-24 01:48:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2022-02-24 01:48:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-24 01:48:09,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:09,027 INFO L514 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:09,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-02-24 01:48:09,027 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1016461225, now seen corresponding path program 75 times [2022-02-24 01:48:09,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:09,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505718486] [2022-02-24 01:48:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:09,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:09,029 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:09,029 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:11,270 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:11,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505718486] [2022-02-24 01:48:11,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [505718486] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:11,270 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:11,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-24 01:48:11,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035791917] [2022-02-24 01:48:11,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:11,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-24 01:48:11,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:11,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-24 01:48:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2930, Invalid=3232, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 01:48:11,271 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) [2022-02-24 01:48:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:14,746 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2022-02-24 01:48:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-24 01:48:14,746 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 [2022-02-24 01:48:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:14,761 INFO L225 Difference]: With dead ends: 96 [2022-02-24 01:48:14,761 INFO L226 Difference]: Without dead ends: 94 [2022-02-24 01:48:14,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2998 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=8934, Invalid=14936, Unknown=0, NotChecked=0, Total=23870 [2022-02-24 01:48:14,763 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 [2022-02-24 01:48:14,763 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] [2022-02-24 01:48:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-24 01:48:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2022-02-24 01:48:14,770 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) [2022-02-24 01:48:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2022-02-24 01:48:14,770 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85 [2022-02-24 01:48:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:14,770 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2022-02-24 01:48:14,770 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) [2022-02-24 01:48:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2022-02-24 01:48:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 01:48:14,771 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:14,771 INFO L514 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:14,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-02-24 01:48:14,771 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1445529974, now seen corresponding path program 75 times [2022-02-24 01:48:14,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:14,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468756858] [2022-02-24 01:48:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:14,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:14,772 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:14,772 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:14,772 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:16,960 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:16,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468756858] [2022-02-24 01:48:16,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [468756858] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:16,960 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:16,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-02-24 01:48:16,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525264034] [2022-02-24 01:48:16,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:16,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-24 01:48:16,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-24 01:48:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-02-24 01:48:16,961 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) [2022-02-24 01:48:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:19,324 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2022-02-24 01:48:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-24 01:48:19,325 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 [2022-02-24 01:48:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:19,325 INFO L225 Difference]: With dead ends: 94 [2022-02-24 01:48:19,325 INFO L226 Difference]: Without dead ends: 90 [2022-02-24 01:48:19,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2022-02-24 01:48:19,326 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 [2022-02-24 01:48:19,326 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] [2022-02-24 01:48:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-24 01:48:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-02-24 01:48:19,333 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) [2022-02-24 01:48:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2022-02-24 01:48:19,333 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 86 [2022-02-24 01:48:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:19,333 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2022-02-24 01:48:19,333 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) [2022-02-24 01:48:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2022-02-24 01:48:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 01:48:19,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:19,333 INFO L514 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:19,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-02-24 01:48:19,334 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:19,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1445578793, now seen corresponding path program 76 times [2022-02-24 01:48:19,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:19,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126292319] [2022-02-24 01:48:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:19,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:19,335 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:19,335 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:19,335 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:21,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:21,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:21,673 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:21,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126292319] [2022-02-24 01:48:21,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2126292319] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:21,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:21,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-24 01:48:21,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167005993] [2022-02-24 01:48:21,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:21,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-24 01:48:21,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:21,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-24 01:48:21,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=3313, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 01:48:21,675 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) [2022-02-24 01:48:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:25,364 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2022-02-24 01:48:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-24 01:48:25,365 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 [2022-02-24 01:48:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:25,365 INFO L225 Difference]: With dead ends: 97 [2022-02-24 01:48:25,365 INFO L226 Difference]: Without dead ends: 95 [2022-02-24 01:48:25,366 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 [2022-02-24 01:48:25,366 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 [2022-02-24 01:48:25,366 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] [2022-02-24 01:48:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-24 01:48:25,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2022-02-24 01:48:25,373 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) [2022-02-24 01:48:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2022-02-24 01:48:25,374 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 86 [2022-02-24 01:48:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:25,374 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2022-02-24 01:48:25,374 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) [2022-02-24 01:48:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2022-02-24 01:48:25,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-24 01:48:25,374 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:25,374 INFO L514 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:25,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-02-24 01:48:25,374 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:25,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:25,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1863272694, now seen corresponding path program 76 times [2022-02-24 01:48:25,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:25,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272485336] [2022-02-24 01:48:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:25,376 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:25,376 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:25,376 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:27,148 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:27,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272485336] [2022-02-24 01:48:27,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1272485336] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:27,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:27,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-02-24 01:48:27,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650224881] [2022-02-24 01:48:27,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:27,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-24 01:48:27,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:27,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-24 01:48:27,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-02-24 01:48:27,151 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) [2022-02-24 01:48:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:29,573 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2022-02-24 01:48:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-24 01:48:29,573 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 [2022-02-24 01:48:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:29,573 INFO L225 Difference]: With dead ends: 95 [2022-02-24 01:48:29,573 INFO L226 Difference]: Without dead ends: 91 [2022-02-24 01:48:29,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2022-02-24 01:48:29,574 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 [2022-02-24 01:48:29,574 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] [2022-02-24 01:48:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-02-24 01:48:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-02-24 01:48:29,581 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) [2022-02-24 01:48:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2022-02-24 01:48:29,581 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 87 [2022-02-24 01:48:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:29,581 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2022-02-24 01:48:29,581 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) [2022-02-24 01:48:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2022-02-24 01:48:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-24 01:48:29,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:29,582 INFO L514 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:29,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-02-24 01:48:29,582 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:29,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:29,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1863321513, now seen corresponding path program 77 times [2022-02-24 01:48:29,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:29,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810228622] [2022-02-24 01:48:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:29,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:29,584 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:29,584 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:29,584 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:31,102 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:31,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810228622] [2022-02-24 01:48:31,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1810228622] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:31,102 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:31,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-24 01:48:31,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599365939] [2022-02-24 01:48:31,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:31,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-24 01:48:31,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-24 01:48:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3085, Invalid=3395, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 01:48:31,104 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) [2022-02-24 01:48:34,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:34,407 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2022-02-24 01:48:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-24 01:48:34,408 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 [2022-02-24 01:48:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:34,408 INFO L225 Difference]: With dead ends: 98 [2022-02-24 01:48:34,408 INFO L226 Difference]: Without dead ends: 96 [2022-02-24 01:48:34,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9403, Invalid=15719, Unknown=0, NotChecked=0, Total=25122 [2022-02-24 01:48:34,409 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 [2022-02-24 01:48:34,409 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] [2022-02-24 01:48:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-24 01:48:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2022-02-24 01:48:34,416 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) [2022-02-24 01:48:34,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2022-02-24 01:48:34,416 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 87 [2022-02-24 01:48:34,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:34,416 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2022-02-24 01:48:34,417 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) [2022-02-24 01:48:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2022-02-24 01:48:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 01:48:34,417 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:34,417 INFO L514 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:34,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-02-24 01:48:34,417 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1928395126, now seen corresponding path program 77 times [2022-02-24 01:48:34,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:34,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825102756] [2022-02-24 01:48:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:34,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:34,419 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:34,419 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:34,419 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:36,106 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:36,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825102756] [2022-02-24 01:48:36,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [825102756] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:36,106 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:36,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-02-24 01:48:36,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828230098] [2022-02-24 01:48:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:36,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-24 01:48:36,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:36,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-24 01:48:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-02-24 01:48:36,108 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) [2022-02-24 01:48:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:38,627 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2022-02-24 01:48:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-24 01:48:38,627 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 [2022-02-24 01:48:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:38,628 INFO L225 Difference]: With dead ends: 96 [2022-02-24 01:48:38,628 INFO L226 Difference]: Without dead ends: 92 [2022-02-24 01:48:38,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2022-02-24 01:48:38,630 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 [2022-02-24 01:48:38,630 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] [2022-02-24 01:48:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-02-24 01:48:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-02-24 01:48:38,636 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) [2022-02-24 01:48:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2022-02-24 01:48:38,637 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 88 [2022-02-24 01:48:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:38,637 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2022-02-24 01:48:38,638 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) [2022-02-24 01:48:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2022-02-24 01:48:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-24 01:48:38,638 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:38,638 INFO L514 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:38,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-02-24 01:48:38,638 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:38,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:38,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1928443945, now seen corresponding path program 78 times [2022-02-24 01:48:38,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:38,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317417436] [2022-02-24 01:48:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:38,640 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:38,640 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:38,640 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:40,603 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:40,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317417436] [2022-02-24 01:48:40,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [317417436] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:40,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:40,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-24 01:48:40,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345742862] [2022-02-24 01:48:40,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:40,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-24 01:48:40,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-24 01:48:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=3478, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 01:48:40,605 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) [2022-02-24 01:48:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:43,657 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2022-02-24 01:48:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-24 01:48:43,657 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 [2022-02-24 01:48:43,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:43,657 INFO L225 Difference]: With dead ends: 99 [2022-02-24 01:48:43,657 INFO L226 Difference]: Without dead ends: 97 [2022-02-24 01:48:43,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3235 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9642, Invalid=16118, Unknown=0, NotChecked=0, Total=25760 [2022-02-24 01:48:43,658 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 [2022-02-24 01:48:43,659 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] [2022-02-24 01:48:43,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-24 01:48:43,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2022-02-24 01:48:43,665 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) [2022-02-24 01:48:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2022-02-24 01:48:43,665 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 88 [2022-02-24 01:48:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:43,666 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2022-02-24 01:48:43,666 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) [2022-02-24 01:48:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2022-02-24 01:48:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-24 01:48:43,666 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:43,666 INFO L514 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:43,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-02-24 01:48:43,666 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash -347776778, now seen corresponding path program 78 times [2022-02-24 01:48:43,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:43,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612488295] [2022-02-24 01:48:43,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:43,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:43,668 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:43,668 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:43,668 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:45,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:45,341 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:45,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612488295] [2022-02-24 01:48:45,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [612488295] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:45,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:45,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-02-24 01:48:45,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242989409] [2022-02-24 01:48:45,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:45,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-02-24 01:48:45,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:45,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-02-24 01:48:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-02-24 01:48:45,343 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) [2022-02-24 01:48:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:47,063 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2022-02-24 01:48:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-24 01:48:47,063 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 [2022-02-24 01:48:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:47,063 INFO L225 Difference]: With dead ends: 97 [2022-02-24 01:48:47,063 INFO L226 Difference]: Without dead ends: 93 [2022-02-24 01:48:47,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2022-02-24 01:48:47,065 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 [2022-02-24 01:48:47,065 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] [2022-02-24 01:48:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-02-24 01:48:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-02-24 01:48:47,072 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) [2022-02-24 01:48:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2022-02-24 01:48:47,072 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 89 [2022-02-24 01:48:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:47,072 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2022-02-24 01:48:47,072 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) [2022-02-24 01:48:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2022-02-24 01:48:47,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-24 01:48:47,073 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:47,073 INFO L514 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:47,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-02-24 01:48:47,073 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash -347727959, now seen corresponding path program 79 times [2022-02-24 01:48:47,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:47,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125417206] [2022-02-24 01:48:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:47,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:47,074 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:47,074 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:47,075 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:48,919 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:48,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125417206] [2022-02-24 01:48:48,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1125417206] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:48,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:48,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-24 01:48:48,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237530084] [2022-02-24 01:48:48,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:48,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-24 01:48:48,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:48,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-24 01:48:48,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3244, Invalid=3562, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 01:48:48,920 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) [2022-02-24 01:48:52,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:52,030 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2022-02-24 01:48:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-24 01:48:52,030 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 [2022-02-24 01:48:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:52,030 INFO L225 Difference]: With dead ends: 100 [2022-02-24 01:48:52,030 INFO L226 Difference]: Without dead ends: 98 [2022-02-24 01:48:52,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9884, Invalid=16522, Unknown=0, NotChecked=0, Total=26406 [2022-02-24 01:48:52,031 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 [2022-02-24 01:48:52,032 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] [2022-02-24 01:48:52,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-02-24 01:48:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2022-02-24 01:48:52,038 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) [2022-02-24 01:48:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2022-02-24 01:48:52,038 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 89 [2022-02-24 01:48:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:52,039 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2022-02-24 01:48:52,039 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) [2022-02-24 01:48:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2022-02-24 01:48:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-24 01:48:52,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:52,039 INFO L514 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:52,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-02-24 01:48:52,039 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2105338230, now seen corresponding path program 79 times [2022-02-24 01:48:52,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:52,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898594764] [2022-02-24 01:48:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:52,041 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:52,041 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:52,041 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:54,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:54,469 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:54,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898594764] [2022-02-24 01:48:54,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1898594764] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:54,470 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:54,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-02-24 01:48:54,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084205697] [2022-02-24 01:48:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:54,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-24 01:48:54,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-24 01:48:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-02-24 01:48:54,472 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) [2022-02-24 01:48:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:48:56,149 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2022-02-24 01:48:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-24 01:48:56,149 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 [2022-02-24 01:48:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:48:56,149 INFO L225 Difference]: With dead ends: 98 [2022-02-24 01:48:56,149 INFO L226 Difference]: Without dead ends: 94 [2022-02-24 01:48:56,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2022-02-24 01:48:56,151 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 [2022-02-24 01:48:56,151 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] [2022-02-24 01:48:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-24 01:48:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-02-24 01:48:56,158 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) [2022-02-24 01:48:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2022-02-24 01:48:56,159 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 90 [2022-02-24 01:48:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:48:56,159 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2022-02-24 01:48:56,159 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) [2022-02-24 01:48:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2022-02-24 01:48:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-02-24 01:48:56,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:48:56,159 INFO L514 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:48:56,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-02-24 01:48:56,159 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:48:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:48:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2105387049, now seen corresponding path program 80 times [2022-02-24 01:48:56,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:48:56,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322843848] [2022-02-24 01:48:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:48:56,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:48:56,161 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:48:56,161 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:48:56,161 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:48:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:48:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:48:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:48:57,733 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:48:57,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322843848] [2022-02-24 01:48:57,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [322843848] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:48:57,733 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:48:57,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-24 01:48:57,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182181369] [2022-02-24 01:48:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:48:57,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-24 01:48:57,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:48:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-24 01:48:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=3647, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 01:48:57,735 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) [2022-02-24 01:49:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:01,761 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2022-02-24 01:49:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-24 01:49:01,761 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 [2022-02-24 01:49:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:01,761 INFO L225 Difference]: With dead ends: 101 [2022-02-24 01:49:01,761 INFO L226 Difference]: Without dead ends: 99 [2022-02-24 01:49:01,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3398 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10129, Invalid=16931, Unknown=0, NotChecked=0, Total=27060 [2022-02-24 01:49:01,763 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 [2022-02-24 01:49:01,763 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] [2022-02-24 01:49:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-24 01:49:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2022-02-24 01:49:01,769 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) [2022-02-24 01:49:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-02-24 01:49:01,770 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 90 [2022-02-24 01:49:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:01,770 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-02-24 01:49:01,770 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) [2022-02-24 01:49:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-02-24 01:49:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-24 01:49:01,770 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:01,770 INFO L514 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:01,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-02-24 01:49:01,770 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash 842492150, now seen corresponding path program 80 times [2022-02-24 01:49:01,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:01,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665875241] [2022-02-24 01:49:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:01,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:01,772 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:01,772 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:01,772 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:03,495 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:03,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665875241] [2022-02-24 01:49:03,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [665875241] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:03,495 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:03,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-02-24 01:49:03,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278264707] [2022-02-24 01:49:03,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:03,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-24 01:49:03,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-24 01:49:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-02-24 01:49:03,498 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) [2022-02-24 01:49:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:05,687 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2022-02-24 01:49:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-24 01:49:05,687 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 [2022-02-24 01:49:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:05,688 INFO L225 Difference]: With dead ends: 99 [2022-02-24 01:49:05,688 INFO L226 Difference]: Without dead ends: 95 [2022-02-24 01:49:05,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2022-02-24 01:49:05,689 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 [2022-02-24 01:49:05,689 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] [2022-02-24 01:49:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-24 01:49:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-02-24 01:49:05,695 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) [2022-02-24 01:49:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2022-02-24 01:49:05,696 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 91 [2022-02-24 01:49:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:05,696 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2022-02-24 01:49:05,696 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) [2022-02-24 01:49:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2022-02-24 01:49:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-24 01:49:05,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:05,696 INFO L514 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:05,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-02-24 01:49:05,696 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash 842540969, now seen corresponding path program 81 times [2022-02-24 01:49:05,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:05,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654155650] [2022-02-24 01:49:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:05,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:05,698 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:05,698 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:05,698 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:08,325 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:08,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654155650] [2022-02-24 01:49:08,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [654155650] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:08,325 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:08,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-24 01:49:08,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856729832] [2022-02-24 01:49:08,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:08,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-24 01:49:08,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:08,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-24 01:49:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3407, Invalid=3733, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 01:49:08,327 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) [2022-02-24 01:49:12,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:12,474 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2022-02-24 01:49:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-24 01:49:12,475 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 [2022-02-24 01:49:12,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:12,475 INFO L225 Difference]: With dead ends: 102 [2022-02-24 01:49:12,475 INFO L226 Difference]: Without dead ends: 100 [2022-02-24 01:49:12,476 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 [2022-02-24 01:49:12,476 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 [2022-02-24 01:49:12,476 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] [2022-02-24 01:49:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-24 01:49:12,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2022-02-24 01:49:12,483 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) [2022-02-24 01:49:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-02-24 01:49:12,484 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 91 [2022-02-24 01:49:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:12,484 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-02-24 01:49:12,484 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) [2022-02-24 01:49:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-02-24 01:49:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-24 01:49:12,484 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:12,484 INFO L514 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:12,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-02-24 01:49:12,484 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:12,484 INFO L85 PathProgramCache]: Analyzing trace with hash 348969334, now seen corresponding path program 81 times [2022-02-24 01:49:12,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:12,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944735886] [2022-02-24 01:49:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:12,486 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:12,486 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:12,486 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:15,166 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:15,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944735886] [2022-02-24 01:49:15,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1944735886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:15,166 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:15,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-02-24 01:49:15,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662138240] [2022-02-24 01:49:15,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:15,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-24 01:49:15,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-24 01:49:15,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-02-24 01:49:15,167 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) [2022-02-24 01:49:17,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:17,914 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2022-02-24 01:49:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-24 01:49:17,914 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 [2022-02-24 01:49:17,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:17,915 INFO L225 Difference]: With dead ends: 100 [2022-02-24 01:49:17,915 INFO L226 Difference]: Without dead ends: 96 [2022-02-24 01:49:17,916 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 [2022-02-24 01:49:17,916 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 [2022-02-24 01:49:17,916 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] [2022-02-24 01:49:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-24 01:49:17,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-02-24 01:49:17,923 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) [2022-02-24 01:49:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2022-02-24 01:49:17,923 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 92 [2022-02-24 01:49:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:17,924 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2022-02-24 01:49:17,924 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) [2022-02-24 01:49:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2022-02-24 01:49:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-24 01:49:17,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:17,924 INFO L514 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:17,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-02-24 01:49:17,924 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash 349018153, now seen corresponding path program 82 times [2022-02-24 01:49:17,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:17,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938916849] [2022-02-24 01:49:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:17,926 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:17,926 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:17,926 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:19,584 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:19,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938916849] [2022-02-24 01:49:19,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1938916849] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:19,584 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:19,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-24 01:49:19,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135692274] [2022-02-24 01:49:19,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:19,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-24 01:49:19,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:19,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-24 01:49:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=3820, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 01:49:19,586 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) [2022-02-24 01:49:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:22,988 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2022-02-24 01:49:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-24 01:49:22,988 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 [2022-02-24 01:49:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:22,989 INFO L225 Difference]: With dead ends: 103 [2022-02-24 01:49:22,989 INFO L226 Difference]: Without dead ends: 101 [2022-02-24 01:49:22,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3565 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=10628, Invalid=17764, Unknown=0, NotChecked=0, Total=28392 [2022-02-24 01:49:22,991 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 [2022-02-24 01:49:22,991 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] [2022-02-24 01:49:22,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-24 01:49:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2022-02-24 01:49:23,025 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) [2022-02-24 01:49:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2022-02-24 01:49:23,026 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 92 [2022-02-24 01:49:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:23,026 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2022-02-24 01:49:23,026 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) [2022-02-24 01:49:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2022-02-24 01:49:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-24 01:49:23,026 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:23,026 INFO L514 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:23,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-02-24 01:49:23,026 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:23,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2065336074, now seen corresponding path program 82 times [2022-02-24 01:49:23,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:23,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672298752] [2022-02-24 01:49:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:23,028 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:23,028 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:23,028 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:24,880 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:24,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672298752] [2022-02-24 01:49:24,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [672298752] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:24,881 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:24,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-02-24 01:49:24,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037834846] [2022-02-24 01:49:24,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:24,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-24 01:49:24,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:24,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-24 01:49:24,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-02-24 01:49:24,883 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) [2022-02-24 01:49:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:26,927 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2022-02-24 01:49:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-24 01:49:26,927 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 [2022-02-24 01:49:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:26,927 INFO L225 Difference]: With dead ends: 101 [2022-02-24 01:49:26,927 INFO L226 Difference]: Without dead ends: 97 [2022-02-24 01:49:26,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2022-02-24 01:49:26,930 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 [2022-02-24 01:49:26,930 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] [2022-02-24 01:49:26,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-24 01:49:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-02-24 01:49:26,949 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) [2022-02-24 01:49:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2022-02-24 01:49:26,949 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 93 [2022-02-24 01:49:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:26,950 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2022-02-24 01:49:26,950 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) [2022-02-24 01:49:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2022-02-24 01:49:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-24 01:49:26,950 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:26,950 INFO L514 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:26,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-02-24 01:49:26,950 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2065287255, now seen corresponding path program 83 times [2022-02-24 01:49:26,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:26,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902615600] [2022-02-24 01:49:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:26,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:26,952 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:26,952 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:26,952 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:29,416 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:29,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902615600] [2022-02-24 01:49:29,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [902615600] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:29,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:29,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-24 01:49:29,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290486078] [2022-02-24 01:49:29,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:29,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-24 01:49:29,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-24 01:49:29,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3574, Invalid=3908, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 01:49:29,419 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) [2022-02-24 01:49:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:33,686 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2022-02-24 01:49:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-24 01:49:33,686 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 [2022-02-24 01:49:33,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:33,686 INFO L225 Difference]: With dead ends: 104 [2022-02-24 01:49:33,686 INFO L226 Difference]: Without dead ends: 102 [2022-02-24 01:49:33,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3650 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=10882, Invalid=18188, Unknown=0, NotChecked=0, Total=29070 [2022-02-24 01:49:33,688 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 [2022-02-24 01:49:33,688 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] [2022-02-24 01:49:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-02-24 01:49:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2022-02-24 01:49:33,697 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) [2022-02-24 01:49:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2022-02-24 01:49:33,697 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 93 [2022-02-24 01:49:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:33,697 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2022-02-24 01:49:33,698 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) [2022-02-24 01:49:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2022-02-24 01:49:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-02-24 01:49:33,698 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:33,698 INFO L514 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:33,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-02-24 01:49:33,698 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash 400607606, now seen corresponding path program 83 times [2022-02-24 01:49:33,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:33,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13056211] [2022-02-24 01:49:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:33,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:33,699 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:33,700 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:33,700 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:36,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:36,043 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:36,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13056211] [2022-02-24 01:49:36,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [13056211] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:36,043 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:36,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-02-24 01:49:36,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829090461] [2022-02-24 01:49:36,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:36,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-24 01:49:36,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:36,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-24 01:49:36,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-02-24 01:49:36,045 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) [2022-02-24 01:49:38,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:38,601 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2022-02-24 01:49:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-24 01:49:38,601 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 [2022-02-24 01:49:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:38,602 INFO L225 Difference]: With dead ends: 102 [2022-02-24 01:49:38,602 INFO L226 Difference]: Without dead ends: 98 [2022-02-24 01:49:38,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2022-02-24 01:49:38,604 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 [2022-02-24 01:49:38,604 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] [2022-02-24 01:49:38,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-02-24 01:49:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-02-24 01:49:38,611 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) [2022-02-24 01:49:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2022-02-24 01:49:38,611 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 94 [2022-02-24 01:49:38,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:38,611 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2022-02-24 01:49:38,611 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) [2022-02-24 01:49:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2022-02-24 01:49:38,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-02-24 01:49:38,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:38,611 INFO L514 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:38,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-02-24 01:49:38,612 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash 400656425, now seen corresponding path program 84 times [2022-02-24 01:49:38,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:38,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859401846] [2022-02-24 01:49:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:38,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:38,613 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:38,613 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:38,613 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:41,013 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:41,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859401846] [2022-02-24 01:49:41,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1859401846] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:41,014 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:41,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-24 01:49:41,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731194468] [2022-02-24 01:49:41,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:41,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-24 01:49:41,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-24 01:49:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=3997, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 01:49:41,016 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) [2022-02-24 01:49:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:45,465 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2022-02-24 01:49:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-24 01:49:45,465 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 [2022-02-24 01:49:45,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:45,465 INFO L225 Difference]: With dead ends: 105 [2022-02-24 01:49:45,465 INFO L226 Difference]: Without dead ends: 103 [2022-02-24 01:49:45,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3736 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=11139, Invalid=18617, Unknown=0, NotChecked=0, Total=29756 [2022-02-24 01:49:45,467 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 [2022-02-24 01:49:45,467 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] [2022-02-24 01:49:45,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-24 01:49:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2022-02-24 01:49:45,474 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) [2022-02-24 01:49:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2022-02-24 01:49:45,474 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 94 [2022-02-24 01:49:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:45,474 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2022-02-24 01:49:45,474 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) [2022-02-24 01:49:45,474 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2022-02-24 01:49:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-24 01:49:45,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:45,475 INFO L514 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:45,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-02-24 01:49:45,475 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash -464549642, now seen corresponding path program 84 times [2022-02-24 01:49:45,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:45,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931189844] [2022-02-24 01:49:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:45,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:45,476 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:45,476 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:45,476 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:47,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:47,982 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:47,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931189844] [2022-02-24 01:49:47,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1931189844] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:47,983 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:47,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-02-24 01:49:47,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307871317] [2022-02-24 01:49:47,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:47,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-24 01:49:47,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-24 01:49:47,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-02-24 01:49:47,984 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) [2022-02-24 01:49:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:50,054 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2022-02-24 01:49:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-24 01:49:50,054 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 [2022-02-24 01:49:50,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:50,055 INFO L225 Difference]: With dead ends: 103 [2022-02-24 01:49:50,055 INFO L226 Difference]: Without dead ends: 99 [2022-02-24 01:49:50,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2022-02-24 01:49:50,056 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 [2022-02-24 01:49:50,058 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] [2022-02-24 01:49:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-24 01:49:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-02-24 01:49:50,065 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) [2022-02-24 01:49:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2022-02-24 01:49:50,066 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 95 [2022-02-24 01:49:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:50,066 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2022-02-24 01:49:50,066 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) [2022-02-24 01:49:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2022-02-24 01:49:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-02-24 01:49:50,066 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:50,066 INFO L514 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:50,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-02-24 01:49:50,066 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash -464500823, now seen corresponding path program 85 times [2022-02-24 01:49:50,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:50,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052415414] [2022-02-24 01:49:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:50,069 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:50,069 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:50,069 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:52,366 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:52,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052415414] [2022-02-24 01:49:52,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2052415414] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:52,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:52,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-24 01:49:52,366 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562156023] [2022-02-24 01:49:52,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:52,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-24 01:49:52,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-24 01:49:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3745, Invalid=4087, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 01:49:52,368 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) [2022-02-24 01:49:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:49:55,941 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2022-02-24 01:49:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-24 01:49:55,941 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 [2022-02-24 01:49:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:49:55,942 INFO L225 Difference]: With dead ends: 106 [2022-02-24 01:49:55,942 INFO L226 Difference]: Without dead ends: 104 [2022-02-24 01:49:55,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3823 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=11399, Invalid=19051, Unknown=0, NotChecked=0, Total=30450 [2022-02-24 01:49:55,943 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 [2022-02-24 01:49:55,943 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] [2022-02-24 01:49:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-24 01:49:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2022-02-24 01:49:55,951 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) [2022-02-24 01:49:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2022-02-24 01:49:55,952 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 95 [2022-02-24 01:49:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:49:55,952 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2022-02-24 01:49:55,952 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) [2022-02-24 01:49:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2022-02-24 01:49:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-24 01:49:55,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:49:55,952 INFO L514 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:49:55,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-02-24 01:49:55,952 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:49:55,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:49:55,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1514620554, now seen corresponding path program 85 times [2022-02-24 01:49:55,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:49:55,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676884387] [2022-02-24 01:49:55,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:49:55,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:49:55,956 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:49:55,956 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:49:55,956 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:49:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:49:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:49:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:49:58,087 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:49:58,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676884387] [2022-02-24 01:49:58,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [676884387] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:49:58,087 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:49:58,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-02-24 01:49:58,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939551150] [2022-02-24 01:49:58,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:49:58,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-24 01:49:58,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:49:58,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-24 01:49:58,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-02-24 01:49:58,089 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) [2022-02-24 01:50:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:00,023 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2022-02-24 01:50:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-24 01:50:00,024 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 [2022-02-24 01:50:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:00,024 INFO L225 Difference]: With dead ends: 104 [2022-02-24 01:50:00,024 INFO L226 Difference]: Without dead ends: 100 [2022-02-24 01:50:00,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2022-02-24 01:50:00,026 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 [2022-02-24 01:50:00,026 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] [2022-02-24 01:50:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-24 01:50:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-02-24 01:50:00,035 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) [2022-02-24 01:50:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2022-02-24 01:50:00,035 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 96 [2022-02-24 01:50:00,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:00,035 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2022-02-24 01:50:00,035 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) [2022-02-24 01:50:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2022-02-24 01:50:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-02-24 01:50:00,036 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:00,036 INFO L514 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:00,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-02-24 01:50:00,036 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:00,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1514571735, now seen corresponding path program 86 times [2022-02-24 01:50:00,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:00,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268843685] [2022-02-24 01:50:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:00,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:00,047 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:00,047 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:00,047 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:01,878 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:01,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268843685] [2022-02-24 01:50:01,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268843685] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:01,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:01,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-24 01:50:01,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847469394] [2022-02-24 01:50:01,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:01,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-24 01:50:01,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-24 01:50:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=4178, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 01:50:01,880 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) [2022-02-24 01:50:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:05,493 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2022-02-24 01:50:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-24 01:50:05,494 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 [2022-02-24 01:50:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:05,494 INFO L225 Difference]: With dead ends: 107 [2022-02-24 01:50:05,494 INFO L226 Difference]: Without dead ends: 105 [2022-02-24 01:50:05,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3911 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=11662, Invalid=19490, Unknown=0, NotChecked=0, Total=31152 [2022-02-24 01:50:05,496 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 [2022-02-24 01:50:05,496 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] [2022-02-24 01:50:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-02-24 01:50:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2022-02-24 01:50:05,504 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) [2022-02-24 01:50:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2022-02-24 01:50:05,504 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 96 [2022-02-24 01:50:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:05,504 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2022-02-24 01:50:05,504 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) [2022-02-24 01:50:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2022-02-24 01:50:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-24 01:50:05,505 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:05,505 INFO L514 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:05,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-02-24 01:50:05,505 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:05,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:05,505 INFO L85 PathProgramCache]: Analyzing trace with hash 292919542, now seen corresponding path program 86 times [2022-02-24 01:50:05,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:05,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157289836] [2022-02-24 01:50:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:05,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:05,507 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:05,507 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:05,507 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:07,843 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:07,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157289836] [2022-02-24 01:50:07,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1157289836] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:07,843 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:07,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-02-24 01:50:07,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292277966] [2022-02-24 01:50:07,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:07,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-24 01:50:07,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:07,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-24 01:50:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-02-24 01:50:07,845 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) [2022-02-24 01:50:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:09,768 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2022-02-24 01:50:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-24 01:50:09,768 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 [2022-02-24 01:50:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:09,768 INFO L225 Difference]: With dead ends: 105 [2022-02-24 01:50:09,768 INFO L226 Difference]: Without dead ends: 101 [2022-02-24 01:50:09,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2022-02-24 01:50:09,770 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 [2022-02-24 01:50:09,771 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] [2022-02-24 01:50:09,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-24 01:50:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-02-24 01:50:09,778 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) [2022-02-24 01:50:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2022-02-24 01:50:09,778 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 97 [2022-02-24 01:50:09,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:09,779 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2022-02-24 01:50:09,779 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) [2022-02-24 01:50:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2022-02-24 01:50:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-02-24 01:50:09,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:09,779 INFO L514 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:09,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-02-24 01:50:09,779 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:09,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash 292968361, now seen corresponding path program 87 times [2022-02-24 01:50:09,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:09,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281392402] [2022-02-24 01:50:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:09,781 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:09,781 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:09,781 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:12,211 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:12,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281392402] [2022-02-24 01:50:12,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [281392402] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:12,212 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:12,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-24 01:50:12,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555298969] [2022-02-24 01:50:12,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:12,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-24 01:50:12,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:12,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-24 01:50:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3920, Invalid=4270, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 01:50:12,214 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) [2022-02-24 01:50:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:15,999 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2022-02-24 01:50:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-24 01:50:15,999 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 [2022-02-24 01:50:15,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:16,000 INFO L225 Difference]: With dead ends: 108 [2022-02-24 01:50:16,000 INFO L226 Difference]: Without dead ends: 106 [2022-02-24 01:50:16,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=11928, Invalid=19934, Unknown=0, NotChecked=0, Total=31862 [2022-02-24 01:50:16,001 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 [2022-02-24 01:50:16,001 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] [2022-02-24 01:50:16,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-24 01:50:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-02-24 01:50:16,009 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) [2022-02-24 01:50:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2022-02-24 01:50:16,009 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 97 [2022-02-24 01:50:16,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:16,010 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2022-02-24 01:50:16,010 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) [2022-02-24 01:50:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2022-02-24 01:50:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-24 01:50:16,010 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:16,010 INFO L514 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:16,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-02-24 01:50:16,010 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash 492087670, now seen corresponding path program 87 times [2022-02-24 01:50:16,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:16,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667780321] [2022-02-24 01:50:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:16,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:16,012 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:16,012 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:16,012 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:17,850 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:17,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667780321] [2022-02-24 01:50:17,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [667780321] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:17,850 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:17,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-02-24 01:50:17,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688293256] [2022-02-24 01:50:17,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:17,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-24 01:50:17,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:17,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-24 01:50:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-02-24 01:50:17,852 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) [2022-02-24 01:50:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:19,917 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2022-02-24 01:50:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-24 01:50:19,918 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 [2022-02-24 01:50:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:19,918 INFO L225 Difference]: With dead ends: 106 [2022-02-24 01:50:19,918 INFO L226 Difference]: Without dead ends: 102 [2022-02-24 01:50:19,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2022-02-24 01:50:19,921 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 [2022-02-24 01:50:19,921 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] [2022-02-24 01:50:19,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-02-24 01:50:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-02-24 01:50:19,928 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) [2022-02-24 01:50:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2022-02-24 01:50:19,929 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 98 [2022-02-24 01:50:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:19,929 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2022-02-24 01:50:19,929 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) [2022-02-24 01:50:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2022-02-24 01:50:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-24 01:50:19,929 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:19,929 INFO L514 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:19,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-02-24 01:50:19,930 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash 492136489, now seen corresponding path program 88 times [2022-02-24 01:50:19,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:19,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052774804] [2022-02-24 01:50:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:19,931 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:19,931 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:19,931 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:21,827 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:21,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052774804] [2022-02-24 01:50:21,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1052774804] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:21,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:21,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-24 01:50:21,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631325131] [2022-02-24 01:50:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:21,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-24 01:50:21,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-24 01:50:21,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4009, Invalid=4363, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 01:50:21,830 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) [2022-02-24 01:50:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:25,498 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2022-02-24 01:50:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-24 01:50:25,499 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 [2022-02-24 01:50:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:25,499 INFO L225 Difference]: With dead ends: 109 [2022-02-24 01:50:25,499 INFO L226 Difference]: Without dead ends: 107 [2022-02-24 01:50:25,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4090 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=12197, Invalid=20383, Unknown=0, NotChecked=0, Total=32580 [2022-02-24 01:50:25,500 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 [2022-02-24 01:50:25,500 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] [2022-02-24 01:50:25,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-24 01:50:25,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2022-02-24 01:50:25,508 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) [2022-02-24 01:50:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-02-24 01:50:25,509 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 98 [2022-02-24 01:50:25,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:25,509 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-02-24 01:50:25,509 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) [2022-02-24 01:50:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-02-24 01:50:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-24 01:50:25,509 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:25,509 INFO L514 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:25,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-02-24 01:50:25,509 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1923634954, now seen corresponding path program 88 times [2022-02-24 01:50:25,510 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:25,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615362449] [2022-02-24 01:50:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:25,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:25,511 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:25,511 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:25,511 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:27,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:27,779 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:27,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615362449] [2022-02-24 01:50:27,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1615362449] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:27,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:27,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-02-24 01:50:27,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907676542] [2022-02-24 01:50:27,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:27,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-24 01:50:27,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-24 01:50:27,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-02-24 01:50:27,782 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) [2022-02-24 01:50:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:30,282 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2022-02-24 01:50:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-24 01:50:30,282 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 [2022-02-24 01:50:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:30,283 INFO L225 Difference]: With dead ends: 107 [2022-02-24 01:50:30,283 INFO L226 Difference]: Without dead ends: 103 [2022-02-24 01:50:30,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2022-02-24 01:50:30,286 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 [2022-02-24 01:50:30,286 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] [2022-02-24 01:50:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-24 01:50:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-02-24 01:50:30,300 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) [2022-02-24 01:50:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2022-02-24 01:50:30,301 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 99 [2022-02-24 01:50:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:30,301 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2022-02-24 01:50:30,301 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) [2022-02-24 01:50:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2022-02-24 01:50:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-24 01:50:30,301 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:30,301 INFO L514 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:30,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-02-24 01:50:30,302 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1923586135, now seen corresponding path program 89 times [2022-02-24 01:50:30,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:30,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494771603] [2022-02-24 01:50:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:30,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:30,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:30,303 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:30,303 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:32,201 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:32,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494771603] [2022-02-24 01:50:32,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [494771603] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:32,201 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:32,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-24 01:50:32,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301077042] [2022-02-24 01:50:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:32,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-24 01:50:32,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:32,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-24 01:50:32,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=4457, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 01:50:32,204 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) [2022-02-24 01:50:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:35,664 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2022-02-24 01:50:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-24 01:50:35,665 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 [2022-02-24 01:50:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:35,665 INFO L225 Difference]: With dead ends: 110 [2022-02-24 01:50:35,665 INFO L226 Difference]: Without dead ends: 108 [2022-02-24 01:50:35,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4181 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12469, Invalid=20837, Unknown=0, NotChecked=0, Total=33306 [2022-02-24 01:50:35,667 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 [2022-02-24 01:50:35,667 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] [2022-02-24 01:50:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-24 01:50:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2022-02-24 01:50:35,675 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) [2022-02-24 01:50:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-02-24 01:50:35,676 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 99 [2022-02-24 01:50:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:35,676 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-02-24 01:50:35,676 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) [2022-02-24 01:50:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-02-24 01:50:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-24 01:50:35,676 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:35,676 INFO L514 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:35,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-02-24 01:50:35,676 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash 498375030, now seen corresponding path program 89 times [2022-02-24 01:50:35,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:35,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761320401] [2022-02-24 01:50:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:35,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:35,678 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:35,678 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:35,678 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:37,998 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:37,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761320401] [2022-02-24 01:50:37,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [761320401] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:37,998 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:37,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-02-24 01:50:37,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838243230] [2022-02-24 01:50:37,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:37,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-24 01:50:37,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:37,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-24 01:50:38,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-02-24 01:50:38,000 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) [2022-02-24 01:50:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:40,033 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2022-02-24 01:50:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-24 01:50:40,033 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 [2022-02-24 01:50:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:40,033 INFO L225 Difference]: With dead ends: 108 [2022-02-24 01:50:40,033 INFO L226 Difference]: Without dead ends: 104 [2022-02-24 01:50:40,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2022-02-24 01:50:40,035 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 [2022-02-24 01:50:40,036 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] [2022-02-24 01:50:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-02-24 01:50:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-02-24 01:50:40,047 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) [2022-02-24 01:50:40,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2022-02-24 01:50:40,047 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 100 [2022-02-24 01:50:40,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:40,047 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2022-02-24 01:50:40,048 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) [2022-02-24 01:50:40,048 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2022-02-24 01:50:40,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-24 01:50:40,048 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:40,048 INFO L514 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:40,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-02-24 01:50:40,048 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:40,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:40,048 INFO L85 PathProgramCache]: Analyzing trace with hash 498423849, now seen corresponding path program 90 times [2022-02-24 01:50:40,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:40,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842708455] [2022-02-24 01:50:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:40,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:40,050 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:40,050 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:40,050 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:42,160 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:42,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842708455] [2022-02-24 01:50:42,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [842708455] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:42,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:42,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-24 01:50:42,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359974140] [2022-02-24 01:50:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:42,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-24 01:50:42,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-24 01:50:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4190, Invalid=4552, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 01:50:42,161 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) [2022-02-24 01:50:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:45,818 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2022-02-24 01:50:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-24 01:50:45,818 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 [2022-02-24 01:50:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:45,819 INFO L225 Difference]: With dead ends: 111 [2022-02-24 01:50:45,819 INFO L226 Difference]: Without dead ends: 109 [2022-02-24 01:50:45,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4273 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=12744, Invalid=21296, Unknown=0, NotChecked=0, Total=34040 [2022-02-24 01:50:45,821 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 [2022-02-24 01:50:45,821 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] [2022-02-24 01:50:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-24 01:50:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-02-24 01:50:45,828 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) [2022-02-24 01:50:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-02-24 01:50:45,828 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 100 [2022-02-24 01:50:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:45,828 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-02-24 01:50:45,829 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) [2022-02-24 01:50:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-02-24 01:50:45,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-24 01:50:45,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:45,829 INFO L514 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:45,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-02-24 01:50:45,829 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1728726794, now seen corresponding path program 90 times [2022-02-24 01:50:45,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:45,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088270592] [2022-02-24 01:50:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:45,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:45,830 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:45,830 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:45,830 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:47,829 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:47,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088270592] [2022-02-24 01:50:47,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1088270592] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:47,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:47,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-02-24 01:50:47,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300301671] [2022-02-24 01:50:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:47,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-02-24 01:50:47,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-02-24 01:50:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-02-24 01:50:47,832 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) [2022-02-24 01:50:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:50,268 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2022-02-24 01:50:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-24 01:50:50,268 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 [2022-02-24 01:50:50,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:50,269 INFO L225 Difference]: With dead ends: 109 [2022-02-24 01:50:50,269 INFO L226 Difference]: Without dead ends: 105 [2022-02-24 01:50:50,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2022-02-24 01:50:50,271 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 [2022-02-24 01:50:50,271 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] [2022-02-24 01:50:50,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-02-24 01:50:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-02-24 01:50:50,279 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) [2022-02-24 01:50:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2022-02-24 01:50:50,279 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 101 [2022-02-24 01:50:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:50,279 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2022-02-24 01:50:50,280 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) [2022-02-24 01:50:50,280 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2022-02-24 01:50:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-02-24 01:50:50,280 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:50,280 INFO L514 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:50,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-02-24 01:50:50,280 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1728677975, now seen corresponding path program 91 times [2022-02-24 01:50:50,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:50,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913747773] [2022-02-24 01:50:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:50,282 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:50,282 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:50,282 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:52,425 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:52,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913747773] [2022-02-24 01:50:52,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [913747773] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:52,425 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:52,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-24 01:50:52,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045891659] [2022-02-24 01:50:52,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:52,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-24 01:50:52,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:52,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-24 01:50:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4282, Invalid=4648, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 01:50:52,427 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) [2022-02-24 01:50:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:50:56,158 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2022-02-24 01:50:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-24 01:50:56,159 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 [2022-02-24 01:50:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:50:56,159 INFO L225 Difference]: With dead ends: 112 [2022-02-24 01:50:56,159 INFO L226 Difference]: Without dead ends: 110 [2022-02-24 01:50:56,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4366 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=13022, Invalid=21760, Unknown=0, NotChecked=0, Total=34782 [2022-02-24 01:50:56,161 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 [2022-02-24 01:50:56,161 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] [2022-02-24 01:50:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-24 01:50:56,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2022-02-24 01:50:56,169 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) [2022-02-24 01:50:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2022-02-24 01:50:56,169 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 101 [2022-02-24 01:50:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:50:56,169 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2022-02-24 01:50:56,169 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) [2022-02-24 01:50:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2022-02-24 01:50:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-24 01:50:56,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:50:56,170 INFO L514 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:50:56,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-02-24 01:50:56,170 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:50:56,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:50:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2049406602, now seen corresponding path program 91 times [2022-02-24 01:50:56,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:50:56,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779886569] [2022-02-24 01:50:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:50:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:50:56,171 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:50:56,171 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:50:56,171 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:50:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:50:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:50:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:50:58,206 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:50:58,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779886569] [2022-02-24 01:50:58,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [779886569] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:50:58,206 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:50:58,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-02-24 01:50:58,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530053043] [2022-02-24 01:50:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:50:58,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-24 01:50:58,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:50:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-24 01:50:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-02-24 01:50:58,208 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) [2022-02-24 01:51:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:00,302 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2022-02-24 01:51:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-24 01:51:00,303 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 [2022-02-24 01:51:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:00,303 INFO L225 Difference]: With dead ends: 110 [2022-02-24 01:51:00,303 INFO L226 Difference]: Without dead ends: 106 [2022-02-24 01:51:00,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2022-02-24 01:51:00,305 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 [2022-02-24 01:51:00,305 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] [2022-02-24 01:51:00,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-24 01:51:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-02-24 01:51:00,312 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) [2022-02-24 01:51:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2022-02-24 01:51:00,313 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 102 [2022-02-24 01:51:00,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:00,313 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2022-02-24 01:51:00,313 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) [2022-02-24 01:51:00,313 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2022-02-24 01:51:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-24 01:51:00,313 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:00,313 INFO L514 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:00,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-02-24 01:51:00,313 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:00,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2049357783, now seen corresponding path program 92 times [2022-02-24 01:51:00,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:00,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138410277] [2022-02-24 01:51:00,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:00,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:00,315 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:00,315 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:00,315 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:03,064 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:03,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138410277] [2022-02-24 01:51:03,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [138410277] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:03,064 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:03,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-24 01:51:03,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436426191] [2022-02-24 01:51:03,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:03,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-24 01:51:03,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:03,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-24 01:51:03,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4375, Invalid=4745, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 01:51:03,066 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) [2022-02-24 01:51:06,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:06,747 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2022-02-24 01:51:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-24 01:51:06,748 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 [2022-02-24 01:51:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:06,748 INFO L225 Difference]: With dead ends: 113 [2022-02-24 01:51:06,748 INFO L226 Difference]: Without dead ends: 111 [2022-02-24 01:51:06,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4460 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=13303, Invalid=22229, Unknown=0, NotChecked=0, Total=35532 [2022-02-24 01:51:06,749 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 [2022-02-24 01:51:06,749 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] [2022-02-24 01:51:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-24 01:51:06,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2022-02-24 01:51:06,757 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) [2022-02-24 01:51:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2022-02-24 01:51:06,757 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 102 [2022-02-24 01:51:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:06,757 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2022-02-24 01:51:06,757 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) [2022-02-24 01:51:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2022-02-24 01:51:06,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-24 01:51:06,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:06,758 INFO L514 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:06,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-02-24 01:51:06,758 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash 894421238, now seen corresponding path program 92 times [2022-02-24 01:51:06,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:06,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473106854] [2022-02-24 01:51:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:06,759 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:06,759 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:06,759 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:09,166 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:09,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473106854] [2022-02-24 01:51:09,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1473106854] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:09,166 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:09,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-02-24 01:51:09,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233304625] [2022-02-24 01:51:09,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:09,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-24 01:51:09,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:09,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-24 01:51:09,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-02-24 01:51:09,169 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) [2022-02-24 01:51:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:11,714 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2022-02-24 01:51:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-24 01:51:11,714 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 [2022-02-24 01:51:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:11,714 INFO L225 Difference]: With dead ends: 111 [2022-02-24 01:51:11,714 INFO L226 Difference]: Without dead ends: 107 [2022-02-24 01:51:11,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2022-02-24 01:51:11,716 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 [2022-02-24 01:51:11,716 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] [2022-02-24 01:51:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-24 01:51:11,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-02-24 01:51:11,725 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) [2022-02-24 01:51:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2022-02-24 01:51:11,725 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 103 [2022-02-24 01:51:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:11,725 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2022-02-24 01:51:11,725 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) [2022-02-24 01:51:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2022-02-24 01:51:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-02-24 01:51:11,726 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:11,726 INFO L514 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:11,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-02-24 01:51:11,726 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash 894470057, now seen corresponding path program 93 times [2022-02-24 01:51:11,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:11,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306749274] [2022-02-24 01:51:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:11,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:11,727 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:11,727 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:11,727 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:13,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:13,770 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:13,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306749274] [2022-02-24 01:51:13,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [306749274] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:13,770 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:13,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-24 01:51:13,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963194799] [2022-02-24 01:51:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:13,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-24 01:51:13,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-24 01:51:13,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4469, Invalid=4843, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 01:51:13,772 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) [2022-02-24 01:51:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:18,977 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2022-02-24 01:51:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-24 01:51:18,977 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 [2022-02-24 01:51:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:18,977 INFO L225 Difference]: With dead ends: 114 [2022-02-24 01:51:18,977 INFO L226 Difference]: Without dead ends: 112 [2022-02-24 01:51:18,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=13587, Invalid=22703, Unknown=0, NotChecked=0, Total=36290 [2022-02-24 01:51:18,980 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 [2022-02-24 01:51:18,980 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] [2022-02-24 01:51:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-24 01:51:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2022-02-24 01:51:18,987 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) [2022-02-24 01:51:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2022-02-24 01:51:18,988 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 103 [2022-02-24 01:51:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:18,988 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2022-02-24 01:51:18,988 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) [2022-02-24 01:51:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2022-02-24 01:51:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-24 01:51:18,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:18,988 INFO L514 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:18,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-02-24 01:51:18,988 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1958771062, now seen corresponding path program 93 times [2022-02-24 01:51:18,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:18,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977209146] [2022-02-24 01:51:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:18,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:18,990 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:18,990 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:18,990 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:21,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:21,040 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:21,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977209146] [2022-02-24 01:51:21,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1977209146] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:21,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:21,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-02-24 01:51:21,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365834234] [2022-02-24 01:51:21,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:21,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-24 01:51:21,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-24 01:51:21,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-02-24 01:51:21,042 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) [2022-02-24 01:51:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:23,623 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2022-02-24 01:51:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-24 01:51:23,624 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 [2022-02-24 01:51:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:23,624 INFO L225 Difference]: With dead ends: 112 [2022-02-24 01:51:23,624 INFO L226 Difference]: Without dead ends: 108 [2022-02-24 01:51:23,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-02-24 01:51:23,626 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 [2022-02-24 01:51:23,626 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] [2022-02-24 01:51:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-24 01:51:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-02-24 01:51:23,634 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) [2022-02-24 01:51:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2022-02-24 01:51:23,634 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 104 [2022-02-24 01:51:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:23,635 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2022-02-24 01:51:23,635 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) [2022-02-24 01:51:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2022-02-24 01:51:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-24 01:51:23,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:23,635 INFO L514 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:23,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-02-24 01:51:23,635 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1958819881, now seen corresponding path program 94 times [2022-02-24 01:51:23,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:23,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686940819] [2022-02-24 01:51:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:23,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:23,637 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:23,637 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:23,637 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:25,884 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:25,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686940819] [2022-02-24 01:51:25,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [686940819] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:25,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:25,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-24 01:51:25,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49239387] [2022-02-24 01:51:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:25,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-24 01:51:25,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:25,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-24 01:51:25,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4564, Invalid=4942, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 01:51:25,886 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) [2022-02-24 01:51:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:30,043 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2022-02-24 01:51:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-24 01:51:30,043 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 [2022-02-24 01:51:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:30,044 INFO L225 Difference]: With dead ends: 115 [2022-02-24 01:51:30,044 INFO L226 Difference]: Without dead ends: 113 [2022-02-24 01:51:30,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4651 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=13874, Invalid=23182, Unknown=0, NotChecked=0, Total=37056 [2022-02-24 01:51:30,046 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 [2022-02-24 01:51:30,046 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] [2022-02-24 01:51:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-24 01:51:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2022-02-24 01:51:30,060 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) [2022-02-24 01:51:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2022-02-24 01:51:30,060 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 104 [2022-02-24 01:51:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:30,060 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2022-02-24 01:51:30,060 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) [2022-02-24 01:51:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2022-02-24 01:51:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-24 01:51:30,061 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:30,061 INFO L514 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:30,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-02-24 01:51:30,061 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:30,062 INFO L85 PathProgramCache]: Analyzing trace with hash 593877238, now seen corresponding path program 94 times [2022-02-24 01:51:30,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:30,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611396918] [2022-02-24 01:51:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:30,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:30,064 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:30,064 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:30,064 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:32,963 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:32,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611396918] [2022-02-24 01:51:32,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [611396918] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:32,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:32,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-02-24 01:51:32,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914221615] [2022-02-24 01:51:32,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:32,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-24 01:51:32,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-24 01:51:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-02-24 01:51:32,965 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) [2022-02-24 01:51:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:36,569 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2022-02-24 01:51:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-24 01:51:36,569 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 [2022-02-24 01:51:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:36,569 INFO L225 Difference]: With dead ends: 113 [2022-02-24 01:51:36,569 INFO L226 Difference]: Without dead ends: 109 [2022-02-24 01:51:36,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2022-02-24 01:51:36,571 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 [2022-02-24 01:51:36,571 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] [2022-02-24 01:51:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-24 01:51:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-02-24 01:51:36,580 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) [2022-02-24 01:51:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2022-02-24 01:51:36,580 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 105 [2022-02-24 01:51:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:36,580 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2022-02-24 01:51:36,580 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) [2022-02-24 01:51:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2022-02-24 01:51:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-02-24 01:51:36,580 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:36,580 INFO L514 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:36,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-02-24 01:51:36,581 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:36,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash 593926057, now seen corresponding path program 95 times [2022-02-24 01:51:36,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:36,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138856015] [2022-02-24 01:51:36,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:36,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:36,582 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:36,582 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:36,582 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:40,046 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:40,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138856015] [2022-02-24 01:51:40,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1138856015] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:40,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:40,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-24 01:51:40,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629704815] [2022-02-24 01:51:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:40,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-24 01:51:40,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-24 01:51:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4660, Invalid=5042, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 01:51:40,050 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) [2022-02-24 01:51:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:45,503 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2022-02-24 01:51:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-24 01:51:45,503 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 [2022-02-24 01:51:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:45,504 INFO L225 Difference]: With dead ends: 116 [2022-02-24 01:51:45,504 INFO L226 Difference]: Without dead ends: 114 [2022-02-24 01:51:45,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4748 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=14164, Invalid=23666, Unknown=0, NotChecked=0, Total=37830 [2022-02-24 01:51:45,506 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 [2022-02-24 01:51:45,506 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] [2022-02-24 01:51:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-24 01:51:45,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2022-02-24 01:51:45,514 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) [2022-02-24 01:51:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-02-24 01:51:45,514 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 105 [2022-02-24 01:51:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:45,514 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-02-24 01:51:45,514 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) [2022-02-24 01:51:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-02-24 01:51:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-24 01:51:45,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:45,514 INFO L514 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:45,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-02-24 01:51:45,515 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:45,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1231841654, now seen corresponding path program 95 times [2022-02-24 01:51:45,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:45,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408898725] [2022-02-24 01:51:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:45,517 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:45,517 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:45,517 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:48,470 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:48,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408898725] [2022-02-24 01:51:48,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1408898725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:48,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:48,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-02-24 01:51:48,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768149281] [2022-02-24 01:51:48,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:48,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-02-24 01:51:48,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:48,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-02-24 01:51:48,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-02-24 01:51:48,472 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) [2022-02-24 01:51:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:51,226 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2022-02-24 01:51:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-24 01:51:51,226 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 [2022-02-24 01:51:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:51,228 INFO L225 Difference]: With dead ends: 114 [2022-02-24 01:51:51,228 INFO L226 Difference]: Without dead ends: 110 [2022-02-24 01:51:51,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-02-24 01:51:51,230 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 [2022-02-24 01:51:51,230 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] [2022-02-24 01:51:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-24 01:51:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-02-24 01:51:51,238 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) [2022-02-24 01:51:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2022-02-24 01:51:51,238 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 106 [2022-02-24 01:51:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:51,238 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2022-02-24 01:51:51,238 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) [2022-02-24 01:51:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2022-02-24 01:51:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-24 01:51:51,239 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:51,239 INFO L514 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:51,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-02-24 01:51:51,239 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1231890473, now seen corresponding path program 96 times [2022-02-24 01:51:51,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:51,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549059606] [2022-02-24 01:51:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:51,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:51,240 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:51,241 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:51,241 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:51:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:51:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:51:54,408 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:51:54,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549059606] [2022-02-24 01:51:54,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1549059606] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:51:54,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:51:54,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-24 01:51:54,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669176473] [2022-02-24 01:51:54,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:51:54,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-24 01:51:54,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:51:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-24 01:51:54,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=5143, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 01:51:54,410 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) [2022-02-24 01:51:58,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:51:58,473 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2022-02-24 01:51:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-24 01:51:58,474 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 [2022-02-24 01:51:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:51:58,474 INFO L225 Difference]: With dead ends: 117 [2022-02-24 01:51:58,474 INFO L226 Difference]: Without dead ends: 115 [2022-02-24 01:51:58,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4846 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=14457, Invalid=24155, Unknown=0, NotChecked=0, Total=38612 [2022-02-24 01:51:58,476 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 [2022-02-24 01:51:58,476 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] [2022-02-24 01:51:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-24 01:51:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2022-02-24 01:51:58,484 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) [2022-02-24 01:51:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-02-24 01:51:58,484 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 106 [2022-02-24 01:51:58,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:51:58,485 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-02-24 01:51:58,485 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) [2022-02-24 01:51:58,485 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-02-24 01:51:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-24 01:51:58,485 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:51:58,485 INFO L514 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:51:58,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-02-24 01:51:58,485 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:51:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:51:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -466097930, now seen corresponding path program 96 times [2022-02-24 01:51:58,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:51:58,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004434867] [2022-02-24 01:51:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:51:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:51:58,490 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:51:58,490 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:51:58,490 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:51:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:00,601 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:00,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004434867] [2022-02-24 01:52:00,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004434867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:00,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:00,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-02-24 01:52:00,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964195217] [2022-02-24 01:52:00,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:00,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-02-24 01:52:00,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:00,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-02-24 01:52:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-02-24 01:52:00,603 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) [2022-02-24 01:52:03,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:03,010 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2022-02-24 01:52:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-24 01:52:03,010 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 [2022-02-24 01:52:03,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:03,011 INFO L225 Difference]: With dead ends: 115 [2022-02-24 01:52:03,011 INFO L226 Difference]: Without dead ends: 111 [2022-02-24 01:52:03,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2022-02-24 01:52:03,013 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 [2022-02-24 01:52:03,013 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] [2022-02-24 01:52:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-24 01:52:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-02-24 01:52:03,021 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) [2022-02-24 01:52:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2022-02-24 01:52:03,021 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 107 [2022-02-24 01:52:03,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:03,022 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2022-02-24 01:52:03,022 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) [2022-02-24 01:52:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2022-02-24 01:52:03,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-02-24 01:52:03,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:03,022 INFO L514 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:03,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-02-24 01:52:03,022 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash -466049111, now seen corresponding path program 97 times [2022-02-24 01:52:03,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:03,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889901181] [2022-02-24 01:52:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:03,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:03,024 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:03,024 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:03,024 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:05,254 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:05,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889901181] [2022-02-24 01:52:05,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [889901181] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:05,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:05,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-24 01:52:05,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356854337] [2022-02-24 01:52:05,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:05,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-24 01:52:05,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:05,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-24 01:52:05,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4855, Invalid=5245, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 01:52:05,256 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) [2022-02-24 01:52:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:09,558 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2022-02-24 01:52:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-24 01:52:09,559 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 [2022-02-24 01:52:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:09,559 INFO L225 Difference]: With dead ends: 118 [2022-02-24 01:52:09,559 INFO L226 Difference]: Without dead ends: 116 [2022-02-24 01:52:09,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=14753, Invalid=24649, Unknown=0, NotChecked=0, Total=39402 [2022-02-24 01:52:09,562 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 [2022-02-24 01:52:09,562 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] [2022-02-24 01:52:09,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-02-24 01:52:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-02-24 01:52:09,570 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) [2022-02-24 01:52:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-02-24 01:52:09,571 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 107 [2022-02-24 01:52:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:09,571 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-02-24 01:52:09,571 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) [2022-02-24 01:52:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-02-24 01:52:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-24 01:52:09,571 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:09,571 INFO L514 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:09,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-02-24 01:52:09,571 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1562617482, now seen corresponding path program 97 times [2022-02-24 01:52:09,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:09,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047322662] [2022-02-24 01:52:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:09,573 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:09,573 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:09,573 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:11,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:11,851 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:11,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047322662] [2022-02-24 01:52:11,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1047322662] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:11,851 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:11,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-02-24 01:52:11,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926542931] [2022-02-24 01:52:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:11,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-24 01:52:11,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-24 01:52:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-02-24 01:52:11,853 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) [2022-02-24 01:52:14,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:14,256 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2022-02-24 01:52:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-24 01:52:14,256 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 [2022-02-24 01:52:14,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:14,257 INFO L225 Difference]: With dead ends: 116 [2022-02-24 01:52:14,257 INFO L226 Difference]: Without dead ends: 112 [2022-02-24 01:52:14,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2022-02-24 01:52:14,259 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 [2022-02-24 01:52:14,259 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] [2022-02-24 01:52:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-24 01:52:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-02-24 01:52:14,268 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) [2022-02-24 01:52:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2022-02-24 01:52:14,268 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 108 [2022-02-24 01:52:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:14,268 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2022-02-24 01:52:14,268 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) [2022-02-24 01:52:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2022-02-24 01:52:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-24 01:52:14,268 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:14,269 INFO L514 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:14,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-02-24 01:52:14,269 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1562568663, now seen corresponding path program 98 times [2022-02-24 01:52:14,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:14,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008438405] [2022-02-24 01:52:14,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:14,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:14,270 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:14,270 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:14,270 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:16,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:16,590 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:16,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008438405] [2022-02-24 01:52:16,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1008438405] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:16,590 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:16,590 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-24 01:52:16,590 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122230989] [2022-02-24 01:52:16,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:16,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-24 01:52:16,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:16,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-24 01:52:16,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4954, Invalid=5348, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 01:52:16,593 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) [2022-02-24 01:52:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:21,746 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2022-02-24 01:52:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-24 01:52:21,747 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 [2022-02-24 01:52:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:21,747 INFO L225 Difference]: With dead ends: 119 [2022-02-24 01:52:21,747 INFO L226 Difference]: Without dead ends: 117 [2022-02-24 01:52:21,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=15052, Invalid=25148, Unknown=0, NotChecked=0, Total=40200 [2022-02-24 01:52:21,749 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 [2022-02-24 01:52:21,749 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] [2022-02-24 01:52:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-24 01:52:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2022-02-24 01:52:21,757 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) [2022-02-24 01:52:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2022-02-24 01:52:21,757 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 108 [2022-02-24 01:52:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:21,757 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2022-02-24 01:52:21,757 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) [2022-02-24 01:52:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2022-02-24 01:52:21,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-24 01:52:21,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:21,758 INFO L514 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:21,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-02-24 01:52:21,758 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:21,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1194985226, now seen corresponding path program 98 times [2022-02-24 01:52:21,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:21,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570317212] [2022-02-24 01:52:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:21,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:21,759 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:21,760 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:21,760 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:25,395 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:25,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570317212] [2022-02-24 01:52:25,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [570317212] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:25,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:25,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-02-24 01:52:25,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455058818] [2022-02-24 01:52:25,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:25,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-24 01:52:25,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:25,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-24 01:52:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-02-24 01:52:25,398 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) [2022-02-24 01:52:27,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:27,840 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2022-02-24 01:52:27,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-24 01:52:27,841 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 [2022-02-24 01:52:27,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:27,841 INFO L225 Difference]: With dead ends: 117 [2022-02-24 01:52:27,841 INFO L226 Difference]: Without dead ends: 113 [2022-02-24 01:52:27,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2022-02-24 01:52:27,844 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 [2022-02-24 01:52:27,844 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] [2022-02-24 01:52:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-24 01:52:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-02-24 01:52:27,852 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) [2022-02-24 01:52:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2022-02-24 01:52:27,852 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 109 [2022-02-24 01:52:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:27,852 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2022-02-24 01:52:27,852 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) [2022-02-24 01:52:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2022-02-24 01:52:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-24 01:52:27,853 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:27,853 INFO L514 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:27,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-02-24 01:52:27,853 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1194936407, now seen corresponding path program 99 times [2022-02-24 01:52:27,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:27,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66072654] [2022-02-24 01:52:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:27,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:27,858 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:27,859 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:27,859 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:30,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:30,496 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:30,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66072654] [2022-02-24 01:52:30,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [66072654] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:30,496 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:30,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-24 01:52:30,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584421539] [2022-02-24 01:52:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:30,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-24 01:52:30,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-24 01:52:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5054, Invalid=5452, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 01:52:30,498 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) [2022-02-24 01:52:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:34,619 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2022-02-24 01:52:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-24 01:52:34,620 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 [2022-02-24 01:52:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:34,620 INFO L225 Difference]: With dead ends: 120 [2022-02-24 01:52:34,620 INFO L226 Difference]: Without dead ends: 118 [2022-02-24 01:52:34,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5146 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=15354, Invalid=25652, Unknown=0, NotChecked=0, Total=41006 [2022-02-24 01:52:34,622 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 [2022-02-24 01:52:34,622 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] [2022-02-24 01:52:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-24 01:52:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2022-02-24 01:52:34,630 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) [2022-02-24 01:52:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2022-02-24 01:52:34,630 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 109 [2022-02-24 01:52:34,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:34,631 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2022-02-24 01:52:34,631 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) [2022-02-24 01:52:34,631 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2022-02-24 01:52:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-24 01:52:34,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:34,632 INFO L514 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:34,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-02-24 01:52:34,632 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1611680118, now seen corresponding path program 99 times [2022-02-24 01:52:34,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:34,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796544434] [2022-02-24 01:52:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:34,633 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:34,633 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:34,634 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:36,985 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:36,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796544434] [2022-02-24 01:52:36,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1796544434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:36,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:36,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-02-24 01:52:36,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180863963] [2022-02-24 01:52:36,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:36,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-24 01:52:36,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-24 01:52:36,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-02-24 01:52:36,986 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) [2022-02-24 01:52:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:39,407 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2022-02-24 01:52:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-24 01:52:39,407 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 [2022-02-24 01:52:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:39,407 INFO L225 Difference]: With dead ends: 118 [2022-02-24 01:52:39,407 INFO L226 Difference]: Without dead ends: 114 [2022-02-24 01:52:39,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-02-24 01:52:39,409 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 [2022-02-24 01:52:39,410 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] [2022-02-24 01:52:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-24 01:52:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-02-24 01:52:39,418 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) [2022-02-24 01:52:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2022-02-24 01:52:39,418 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 110 [2022-02-24 01:52:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:39,418 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2022-02-24 01:52:39,418 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) [2022-02-24 01:52:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2022-02-24 01:52:39,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-02-24 01:52:39,419 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:39,419 INFO L514 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:39,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-02-24 01:52:39,419 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:39,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1611728937, now seen corresponding path program 100 times [2022-02-24 01:52:39,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:39,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838110431] [2022-02-24 01:52:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:39,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:39,420 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:39,420 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:39,420 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:42,160 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:42,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838110431] [2022-02-24 01:52:42,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [838110431] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:42,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:42,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-24 01:52:42,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276793564] [2022-02-24 01:52:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:42,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-24 01:52:42,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-24 01:52:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5155, Invalid=5557, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 01:52:42,162 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) [2022-02-24 01:52:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:46,729 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2022-02-24 01:52:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-24 01:52:46,729 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 [2022-02-24 01:52:46,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:46,737 INFO L225 Difference]: With dead ends: 121 [2022-02-24 01:52:46,737 INFO L226 Difference]: Without dead ends: 119 [2022-02-24 01:52:46,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5248 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=15659, Invalid=26161, Unknown=0, NotChecked=0, Total=41820 [2022-02-24 01:52:46,738 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 [2022-02-24 01:52:46,738 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] [2022-02-24 01:52:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-24 01:52:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2022-02-24 01:52:46,747 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) [2022-02-24 01:52:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2022-02-24 01:52:46,747 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 110 [2022-02-24 01:52:46,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:46,747 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2022-02-24 01:52:46,747 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) [2022-02-24 01:52:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2022-02-24 01:52:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-24 01:52:46,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:46,748 INFO L514 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:46,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-02-24 01:52:46,748 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:46,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1576007434, now seen corresponding path program 100 times [2022-02-24 01:52:46,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:46,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675283295] [2022-02-24 01:52:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:46,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:46,750 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:46,750 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:46,750 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:49,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:49,262 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:49,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675283295] [2022-02-24 01:52:49,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1675283295] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:49,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:49,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-24 01:52:49,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593674203] [2022-02-24 01:52:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:49,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-24 01:52:49,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-24 01:52:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-02-24 01:52:49,265 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) [2022-02-24 01:52:51,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:51,955 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2022-02-24 01:52:51,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-24 01:52:51,955 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 111 [2022-02-24 01:52:51,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:51,956 INFO L225 Difference]: With dead ends: 119 [2022-02-24 01:52:51,956 INFO L226 Difference]: Without dead ends: 115 [2022-02-24 01:52:51,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2022-02-24 01:52:51,957 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:52:51,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:52:51,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-24 01:52:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-02-24 01:52:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.018181818181818) internal successors, (112), 111 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) [2022-02-24 01:52:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2022-02-24 01:52:51,966 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 111 [2022-02-24 01:52:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:51,966 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2022-02-24 01:52:51,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-02-24 01:52:51,966 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2022-02-24 01:52:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-02-24 01:52:51,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:51,966 INFO L514 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:51,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-02-24 01:52:51,967 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1575958615, now seen corresponding path program 101 times [2022-02-24 01:52:51,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:51,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984437884] [2022-02-24 01:52:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:51,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:51,968 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:51,968 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:51,968 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:52:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:52:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:52:54,289 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:52:54,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984437884] [2022-02-24 01:52:54,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [984437884] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:52:54,289 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:52:54,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-02-24 01:52:54,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367760122] [2022-02-24 01:52:54,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:52:54,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-24 01:52:54,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:52:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-24 01:52:54,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 01:52:54,292 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand has 105 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 104 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:52:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:52:59,015 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2022-02-24 01:52:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-24 01:52:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 104 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2022-02-24 01:52:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:52:59,016 INFO L225 Difference]: With dead ends: 122 [2022-02-24 01:52:59,016 INFO L226 Difference]: Without dead ends: 120 [2022-02-24 01:52:59,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5351 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=15967, Invalid=26675, Unknown=0, NotChecked=0, Total=42642 [2022-02-24 01:52:59,018 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:52:59,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:52:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-24 01:52:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2022-02-24 01:52:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 113 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:52:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2022-02-24 01:52:59,027 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 111 [2022-02-24 01:52:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:52:59,027 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2022-02-24 01:52:59,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 104 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:52:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2022-02-24 01:52:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-24 01:52:59,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:52:59,028 INFO L514 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:52:59,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-02-24 01:52:59,028 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:52:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:52:59,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1610073738, now seen corresponding path program 101 times [2022-02-24 01:52:59,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:52:59,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853079956] [2022-02-24 01:52:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:52:59,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:52:59,029 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:52:59,029 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:52:59,029 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:52:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:01,399 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:01,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853079956] [2022-02-24 01:53:01,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1853079956] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:01,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:01,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-02-24 01:53:01,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799423574] [2022-02-24 01:53:01,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:01,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-24 01:53:01,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-24 01:53:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-02-24 01:53:01,402 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 104 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:04,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:53:04,252 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2022-02-24 01:53:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-24 01:53:04,253 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 104 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2022-02-24 01:53:04,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:53:04,253 INFO L225 Difference]: With dead ends: 120 [2022-02-24 01:53:04,253 INFO L226 Difference]: Without dead ends: 116 [2022-02-24 01:53:04,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2022-02-24 01:53:04,256 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:53:04,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:53:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-02-24 01:53:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-02-24 01:53:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 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) [2022-02-24 01:53:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2022-02-24 01:53:04,264 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 112 [2022-02-24 01:53:04,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:53:04,265 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2022-02-24 01:53:04,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 104 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2022-02-24 01:53:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-24 01:53:04,265 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:53:04,265 INFO L514 BasicCegarLoop]: trace histogram [102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:53:04,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-02-24 01:53:04,265 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:53:04,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:53:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1610024919, now seen corresponding path program 102 times [2022-02-24 01:53:04,265 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:53:04,265 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543055269] [2022-02-24 01:53:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:53:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:53:04,267 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:53:04,267 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:53:04,267 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:53:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:06,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:06,645 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:06,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543055269] [2022-02-24 01:53:06,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1543055269] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:06,646 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:06,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-02-24 01:53:06,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992130495] [2022-02-24 01:53:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:06,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-24 01:53:06,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-24 01:53:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5360, Invalid=5770, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 01:53:06,648 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 106 states, 106 states have (on average 1.028301886792453) internal successors, (109), 105 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:12,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:53:12,134 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2022-02-24 01:53:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-24 01:53:12,134 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.028301886792453) internal successors, (109), 105 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2022-02-24 01:53:12,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:53:12,135 INFO L225 Difference]: With dead ends: 123 [2022-02-24 01:53:12,135 INFO L226 Difference]: Without dead ends: 121 [2022-02-24 01:53:12,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5455 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=16278, Invalid=27194, Unknown=0, NotChecked=0, Total=43472 [2022-02-24 01:53:12,137 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:53:12,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:53:12,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-24 01:53:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2022-02-24 01:53:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 114 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2022-02-24 01:53:12,147 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 112 [2022-02-24 01:53:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:53:12,147 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2022-02-24 01:53:12,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.028301886792453) internal successors, (109), 105 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2022-02-24 01:53:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-24 01:53:12,147 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:53:12,147 INFO L514 BasicCegarLoop]: trace histogram [102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:53:12,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-02-24 01:53:12,147 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:53:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:53:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1628838134, now seen corresponding path program 102 times [2022-02-24 01:53:12,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:53:12,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803546212] [2022-02-24 01:53:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:53:12,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:53:12,149 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:53:12,149 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:53:12,149 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:53:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:14,533 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:14,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803546212] [2022-02-24 01:53:14,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [803546212] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:14,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:14,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-02-24 01:53:14,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558008906] [2022-02-24 01:53:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:14,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-24 01:53:14,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-24 01:53:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-02-24 01:53:14,536 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand has 106 states, 106 states have (on average 1.0377358490566038) internal successors, (110), 105 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:53:17,033 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2022-02-24 01:53:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-24 01:53:17,034 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.0377358490566038) internal successors, (110), 105 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2022-02-24 01:53:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:53:17,034 INFO L225 Difference]: With dead ends: 121 [2022-02-24 01:53:17,034 INFO L226 Difference]: Without dead ends: 117 [2022-02-24 01:53:17,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2022-02-24 01:53:17,037 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:53:17,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:53:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-24 01:53:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-02-24 01:53:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2022-02-24 01:53:17,046 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 113 [2022-02-24 01:53:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:53:17,046 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2022-02-24 01:53:17,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.0377358490566038) internal successors, (110), 105 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2022-02-24 01:53:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-24 01:53:17,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:53:17,046 INFO L514 BasicCegarLoop]: trace histogram [103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:53:17,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-02-24 01:53:17,046 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:53:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:53:17,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1628886953, now seen corresponding path program 103 times [2022-02-24 01:53:17,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:53:17,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390484029] [2022-02-24 01:53:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:53:17,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:53:17,048 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:53:17,048 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:53:17,048 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:53:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:19,387 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:19,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390484029] [2022-02-24 01:53:19,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1390484029] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:19,387 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:19,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-02-24 01:53:19,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154224373] [2022-02-24 01:53:19,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:19,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-24 01:53:19,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-24 01:53:19,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5464, Invalid=5878, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 01:53:19,389 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 107 states, 107 states have (on average 1.02803738317757) internal successors, (110), 106 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:53:24,297 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2022-02-24 01:53:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-24 01:53:24,297 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.02803738317757) internal successors, (110), 106 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2022-02-24 01:53:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:53:24,298 INFO L225 Difference]: With dead ends: 124 [2022-02-24 01:53:24,298 INFO L226 Difference]: Without dead ends: 122 [2022-02-24 01:53:24,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5560 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=16592, Invalid=27718, Unknown=0, NotChecked=0, Total=44310 [2022-02-24 01:53:24,300 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:53:24,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:53:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-24 01:53:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2022-02-24 01:53:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 115 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2022-02-24 01:53:24,308 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 113 [2022-02-24 01:53:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:53:24,308 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2022-02-24 01:53:24,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.02803738317757) internal successors, (110), 106 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2022-02-24 01:53:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-24 01:53:24,309 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:53:24,309 INFO L514 BasicCegarLoop]: trace histogram [103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:53:24,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-02-24 01:53:24,309 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:53:24,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:53:24,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1044108938, now seen corresponding path program 103 times [2022-02-24 01:53:24,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:53:24,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926088326] [2022-02-24 01:53:24,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:53:24,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:53:24,310 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:53:24,310 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:53:24,310 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:53:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:28,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:28,244 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:28,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926088326] [2022-02-24 01:53:28,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1926088326] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:28,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:28,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-02-24 01:53:28,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273392966] [2022-02-24 01:53:28,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:28,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-24 01:53:28,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:28,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-24 01:53:28,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-02-24 01:53:28,246 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 107 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 106 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:32,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:53:32,353 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2022-02-24 01:53:32,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-24 01:53:32,354 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 106 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2022-02-24 01:53:32,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:53:32,354 INFO L225 Difference]: With dead ends: 122 [2022-02-24 01:53:32,354 INFO L226 Difference]: Without dead ends: 118 [2022-02-24 01:53:32,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2022-02-24 01:53:32,357 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:53:32,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:53:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-24 01:53:32,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-02-24 01:53:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 114 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2022-02-24 01:53:32,367 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 114 [2022-02-24 01:53:32,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:53:32,367 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2022-02-24 01:53:32,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 106 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2022-02-24 01:53:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-02-24 01:53:32,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:53:32,368 INFO L514 BasicCegarLoop]: trace histogram [104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:53:32,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-02-24 01:53:32,368 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:53:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:53:32,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1044060119, now seen corresponding path program 104 times [2022-02-24 01:53:32,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:53:32,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463320494] [2022-02-24 01:53:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:53:32,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:53:32,369 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:53:32,369 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:53:32,369 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:53:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:35,202 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:35,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463320494] [2022-02-24 01:53:35,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [463320494] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:35,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:35,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-02-24 01:53:35,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528624400] [2022-02-24 01:53:35,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:35,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-02-24 01:53:35,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-02-24 01:53:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5569, Invalid=5987, Unknown=0, NotChecked=0, Total=11556 [2022-02-24 01:53:35,204 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 107 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:39,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:53:39,740 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2022-02-24 01:53:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-24 01:53:39,740 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 107 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2022-02-24 01:53:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:53:39,741 INFO L225 Difference]: With dead ends: 125 [2022-02-24 01:53:39,741 INFO L226 Difference]: Without dead ends: 123 [2022-02-24 01:53:39,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5666 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=16909, Invalid=28247, Unknown=0, NotChecked=0, Total=45156 [2022-02-24 01:53:39,743 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:53:39,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:53:39,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-02-24 01:53:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2022-02-24 01:53:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 116 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2022-02-24 01:53:39,752 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 114 [2022-02-24 01:53:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:53:39,752 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2022-02-24 01:53:39,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 107 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2022-02-24 01:53:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-24 01:53:39,753 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:53:39,753 INFO L514 BasicCegarLoop]: trace histogram [104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:53:39,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-02-24 01:53:39,753 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:53:39,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:53:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1993877750, now seen corresponding path program 104 times [2022-02-24 01:53:39,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:53:39,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309420096] [2022-02-24 01:53:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:53:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:53:39,754 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:53:39,754 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:53:39,755 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:53:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:42,233 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:42,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309420096] [2022-02-24 01:53:42,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [309420096] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:42,233 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:42,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-02-24 01:53:42,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87190681] [2022-02-24 01:53:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:42,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-02-24 01:53:42,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-02-24 01:53:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-02-24 01:53:42,235 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 108 states, 108 states have (on average 1.037037037037037) internal successors, (112), 107 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:53:44,880 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2022-02-24 01:53:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-24 01:53:44,881 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.037037037037037) internal successors, (112), 107 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2022-02-24 01:53:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:53:44,881 INFO L225 Difference]: With dead ends: 123 [2022-02-24 01:53:44,881 INFO L226 Difference]: Without dead ends: 119 [2022-02-24 01:53:44,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2022-02-24 01:53:44,885 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:53:44,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 59 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:53:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-24 01:53:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-02-24 01:53:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 115 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2022-02-24 01:53:44,894 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 115 [2022-02-24 01:53:44,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:53:44,894 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2022-02-24 01:53:44,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.037037037037037) internal successors, (112), 107 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2022-02-24 01:53:44,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-24 01:53:44,895 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:53:44,895 INFO L514 BasicCegarLoop]: trace histogram [105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:53:44,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-02-24 01:53:44,895 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:53:44,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:53:44,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1993926569, now seen corresponding path program 105 times [2022-02-24 01:53:44,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:53:44,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895756728] [2022-02-24 01:53:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:53:44,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:53:44,896 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:53:44,897 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:53:44,897 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:53:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:48,820 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:48,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895756728] [2022-02-24 01:53:48,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1895756728] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:48,820 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:48,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-02-24 01:53:48,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325592382] [2022-02-24 01:53:48,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:48,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-02-24 01:53:48,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:48,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-02-24 01:53:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5675, Invalid=6097, Unknown=0, NotChecked=0, Total=11772 [2022-02-24 01:53:48,823 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 109 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 108 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:54,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:53:54,131 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2022-02-24 01:53:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-24 01:53:54,132 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 108 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2022-02-24 01:53:54,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:53:54,132 INFO L225 Difference]: With dead ends: 126 [2022-02-24 01:53:54,132 INFO L226 Difference]: Without dead ends: 124 [2022-02-24 01:53:54,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5773 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=17229, Invalid=28781, Unknown=0, NotChecked=0, Total=46010 [2022-02-24 01:53:54,135 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:53:54,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:53:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-24 01:53:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2022-02-24 01:53:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 117 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-02-24 01:53:54,144 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 115 [2022-02-24 01:53:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:53:54,144 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-02-24 01:53:54,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 108 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:53:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-02-24 01:53:54,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-24 01:53:54,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:53:54,144 INFO L514 BasicCegarLoop]: trace histogram [105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:53:54,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-02-24 01:53:54,144 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:53:54,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:53:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1682184566, now seen corresponding path program 105 times [2022-02-24 01:53:54,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:53:54,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946646280] [2022-02-24 01:53:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:53:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:53:54,146 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:53:54,146 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:53:54,146 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:53:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:53:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:53:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:53:57,593 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:53:57,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946646280] [2022-02-24 01:53:57,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [946646280] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:53:57,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:53:57,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-02-24 01:53:57,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734329696] [2022-02-24 01:53:57,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:53:57,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-02-24 01:53:57,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:53:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-02-24 01:53:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-02-24 01:53:57,596 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 109 states, 109 states have (on average 1.036697247706422) internal successors, (113), 108 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:54:00,266 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2022-02-24 01:54:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-24 01:54:00,267 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.036697247706422) internal successors, (113), 108 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2022-02-24 01:54:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:54:00,267 INFO L225 Difference]: With dead ends: 124 [2022-02-24 01:54:00,267 INFO L226 Difference]: Without dead ends: 120 [2022-02-24 01:54:00,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2022-02-24 01:54:00,269 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:54:00,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:54:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-24 01:54:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-02-24 01:54:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.017391304347826) internal successors, (117), 116 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2022-02-24 01:54:00,278 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 116 [2022-02-24 01:54:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:54:00,278 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2022-02-24 01:54:00,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.036697247706422) internal successors, (113), 108 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2022-02-24 01:54:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-24 01:54:00,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:54:00,278 INFO L514 BasicCegarLoop]: trace histogram [106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:54:00,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-02-24 01:54:00,278 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:54:00,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:54:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1682233385, now seen corresponding path program 106 times [2022-02-24 01:54:00,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:54:00,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002971246] [2022-02-24 01:54:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:54:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:54:00,280 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:54:00,280 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:54:00,280 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:54:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:54:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:54:02,927 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:54:02,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002971246] [2022-02-24 01:54:02,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2002971246] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:54:02,927 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:54:02,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-02-24 01:54:02,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312297034] [2022-02-24 01:54:02,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:54:02,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-02-24 01:54:02,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:54:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-02-24 01:54:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5782, Invalid=6208, Unknown=0, NotChecked=0, Total=11990 [2022-02-24 01:54:02,929 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand has 110 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 109 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:54:08,616 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2022-02-24 01:54:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-24 01:54:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 109 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2022-02-24 01:54:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:54:08,617 INFO L225 Difference]: With dead ends: 127 [2022-02-24 01:54:08,617 INFO L226 Difference]: Without dead ends: 125 [2022-02-24 01:54:08,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5881 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=17552, Invalid=29320, Unknown=0, NotChecked=0, Total=46872 [2022-02-24 01:54:08,619 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:54:08,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:54:08,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-02-24 01:54:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2022-02-24 01:54:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 118 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2022-02-24 01:54:08,628 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 116 [2022-02-24 01:54:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:54:08,628 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2022-02-24 01:54:08,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 109 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2022-02-24 01:54:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-24 01:54:08,628 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:54:08,628 INFO L514 BasicCegarLoop]: trace histogram [106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:54:08,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-02-24 01:54:08,628 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:54:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:54:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash 609630454, now seen corresponding path program 106 times [2022-02-24 01:54:08,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:54:08,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873038330] [2022-02-24 01:54:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:54:08,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:54:08,630 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:54:08,630 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:54:08,630 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:54:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:54:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:54:12,933 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:54:12,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873038330] [2022-02-24 01:54:12,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1873038330] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:54:12,933 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:54:12,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-02-24 01:54:12,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717420561] [2022-02-24 01:54:12,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:54:12,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-02-24 01:54:12,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:54:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-02-24 01:54:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-02-24 01:54:12,935 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 110 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 109 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:54:17,247 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2022-02-24 01:54:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-24 01:54:17,247 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 109 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2022-02-24 01:54:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:54:17,247 INFO L225 Difference]: With dead ends: 125 [2022-02-24 01:54:17,248 INFO L226 Difference]: Without dead ends: 121 [2022-02-24 01:54:17,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872 [2022-02-24 01:54:17,250 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:54:17,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:54:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-24 01:54:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-02-24 01:54:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 117 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2022-02-24 01:54:17,259 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 117 [2022-02-24 01:54:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:54:17,260 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2022-02-24 01:54:17,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 109 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2022-02-24 01:54:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-02-24 01:54:17,260 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:54:17,260 INFO L514 BasicCegarLoop]: trace histogram [107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:54:17,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-02-24 01:54:17,260 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:54:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:54:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 609679273, now seen corresponding path program 107 times [2022-02-24 01:54:17,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:54:17,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989448709] [2022-02-24 01:54:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:54:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:54:17,262 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:54:17,262 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:54:17,262 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:54:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:54:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:54:19,988 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:54:19,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989448709] [2022-02-24 01:54:19,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1989448709] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:54:19,988 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:54:19,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-02-24 01:54:19,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304836954] [2022-02-24 01:54:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:54:19,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-02-24 01:54:19,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:54:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-02-24 01:54:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5890, Invalid=6320, Unknown=0, NotChecked=0, Total=12210 [2022-02-24 01:54:19,991 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand has 111 states, 111 states have (on average 1.027027027027027) internal successors, (114), 110 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:54:25,110 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2022-02-24 01:54:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-24 01:54:25,110 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.027027027027027) internal successors, (114), 110 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2022-02-24 01:54:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:54:25,110 INFO L225 Difference]: With dead ends: 128 [2022-02-24 01:54:25,110 INFO L226 Difference]: Without dead ends: 126 [2022-02-24 01:54:25,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5990 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=17878, Invalid=29864, Unknown=0, NotChecked=0, Total=47742 [2022-02-24 01:54:25,113 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:54:25,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:54:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-24 01:54:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2022-02-24 01:54:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 119 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2022-02-24 01:54:25,122 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 117 [2022-02-24 01:54:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:54:25,122 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2022-02-24 01:54:25,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.027027027027027) internal successors, (114), 110 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2022-02-24 01:54:25,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-24 01:54:25,122 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:54:25,122 INFO L514 BasicCegarLoop]: trace histogram [107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:54:25,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-02-24 01:54:25,123 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:54:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:54:25,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1720191350, now seen corresponding path program 107 times [2022-02-24 01:54:25,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:54:25,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527857264] [2022-02-24 01:54:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:54:25,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:54:25,124 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:54:25,124 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:54:25,124 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:54:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:28,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:54:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:54:28,324 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:54:28,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527857264] [2022-02-24 01:54:28,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1527857264] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:54:28,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:54:28,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-02-24 01:54:28,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643802508] [2022-02-24 01:54:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:54:28,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-02-24 01:54:28,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:54:28,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-02-24 01:54:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-02-24 01:54:28,326 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 111 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 110 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:54:31,165 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2022-02-24 01:54:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-24 01:54:31,166 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 110 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2022-02-24 01:54:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:54:31,166 INFO L225 Difference]: With dead ends: 126 [2022-02-24 01:54:31,166 INFO L226 Difference]: Without dead ends: 122 [2022-02-24 01:54:31,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2022-02-24 01:54:31,170 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:54:31,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:54:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-24 01:54:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-02-24 01:54:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2022-02-24 01:54:31,198 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 118 [2022-02-24 01:54:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:54:31,198 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2022-02-24 01:54:31,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 110 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2022-02-24 01:54:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-02-24 01:54:31,199 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:54:31,199 INFO L514 BasicCegarLoop]: trace histogram [108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:54:31,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-02-24 01:54:31,199 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:54:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:54:31,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1720240169, now seen corresponding path program 108 times [2022-02-24 01:54:31,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:54:31,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312264499] [2022-02-24 01:54:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:54:31,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:54:31,201 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:54:31,201 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:54:31,201 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:54:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:54:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:54:33,839 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:54:33,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312264499] [2022-02-24 01:54:33,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [312264499] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:54:33,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:54:33,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-02-24 01:54:33,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510047001] [2022-02-24 01:54:33,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:54:33,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-02-24 01:54:33,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:54:33,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-02-24 01:54:33,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5999, Invalid=6433, Unknown=0, NotChecked=0, Total=12432 [2022-02-24 01:54:33,841 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 112 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 111 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:54:38,853 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2022-02-24 01:54:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-24 01:54:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 111 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2022-02-24 01:54:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:54:38,854 INFO L225 Difference]: With dead ends: 129 [2022-02-24 01:54:38,854 INFO L226 Difference]: Without dead ends: 127 [2022-02-24 01:54:38,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6100 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=18207, Invalid=30413, Unknown=0, NotChecked=0, Total=48620 [2022-02-24 01:54:38,856 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:54:38,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:54:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-24 01:54:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 124. [2022-02-24 01:54:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 120 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2022-02-24 01:54:38,866 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 118 [2022-02-24 01:54:38,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:54:38,867 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2022-02-24 01:54:38,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 111 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2022-02-24 01:54:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-24 01:54:38,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:54:38,867 INFO L514 BasicCegarLoop]: trace histogram [108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:54:38,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-02-24 01:54:38,867 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:54:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:54:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1787840758, now seen corresponding path program 108 times [2022-02-24 01:54:38,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:54:38,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051169933] [2022-02-24 01:54:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:54:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:54:38,869 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:54:38,869 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:54:38,869 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:54:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:54:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:54:42,862 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:54:42,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051169933] [2022-02-24 01:54:42,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051169933] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:54:42,862 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:54:42,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-02-24 01:54:42,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995190941] [2022-02-24 01:54:42,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:54:42,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-02-24 01:54:42,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:54:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-02-24 01:54:42,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-02-24 01:54:42,864 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 112 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 111 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:54:45,986 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2022-02-24 01:54:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-24 01:54:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 111 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2022-02-24 01:54:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:54:45,987 INFO L225 Difference]: With dead ends: 127 [2022-02-24 01:54:45,987 INFO L226 Difference]: Without dead ends: 123 [2022-02-24 01:54:45,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620 [2022-02-24 01:54:45,990 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:54:45,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 59 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:54:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-02-24 01:54:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-02-24 01:54:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2022-02-24 01:54:45,999 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 119 [2022-02-24 01:54:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:54:45,999 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2022-02-24 01:54:45,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 111 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2022-02-24 01:54:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-02-24 01:54:46,000 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:54:46,000 INFO L514 BasicCegarLoop]: trace histogram [109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:54:46,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-02-24 01:54:46,000 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:54:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:54:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1787889577, now seen corresponding path program 109 times [2022-02-24 01:54:46,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:54:46,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367179225] [2022-02-24 01:54:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:54:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:54:46,002 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:54:46,002 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:54:46,002 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:54:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:49,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:54:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:54:49,199 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:54:49,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367179225] [2022-02-24 01:54:49,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1367179225] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:54:49,199 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:54:49,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-02-24 01:54:49,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133449241] [2022-02-24 01:54:49,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:54:49,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-02-24 01:54:49,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:54:49,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-02-24 01:54:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6109, Invalid=6547, Unknown=0, NotChecked=0, Total=12656 [2022-02-24 01:54:49,202 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand has 113 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 112 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:54:54,232 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2022-02-24 01:54:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-24 01:54:54,232 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 112 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2022-02-24 01:54:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:54:54,232 INFO L225 Difference]: With dead ends: 130 [2022-02-24 01:54:54,232 INFO L226 Difference]: Without dead ends: 128 [2022-02-24 01:54:54,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6211 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=18539, Invalid=30967, Unknown=0, NotChecked=0, Total=49506 [2022-02-24 01:54:54,235 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:54:54,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:54:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-02-24 01:54:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2022-02-24 01:54:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 121 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2022-02-24 01:54:54,245 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 119 [2022-02-24 01:54:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:54:54,245 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2022-02-24 01:54:54,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 112 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:54:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2022-02-24 01:54:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-24 01:54:54,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:54:54,246 INFO L514 BasicCegarLoop]: trace histogram [109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:54:54,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-02-24 01:54:54,261 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:54:54,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:54:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash -409994890, now seen corresponding path program 109 times [2022-02-24 01:54:54,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:54:54,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721099888] [2022-02-24 01:54:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:54:54,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:54:54,263 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:54:54,263 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:54:54,263 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:54:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:54:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:54:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:54:58,285 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:54:58,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721099888] [2022-02-24 01:54:58,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [721099888] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:54:58,285 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:54:58,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-02-24 01:54:58,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137687179] [2022-02-24 01:54:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:54:58,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-02-24 01:54:58,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:54:58,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-02-24 01:54:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-02-24 01:54:58,287 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 113 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 112 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:55:01,316 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2022-02-24 01:55:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-24 01:55:01,316 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 112 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2022-02-24 01:55:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:55:01,317 INFO L225 Difference]: With dead ends: 128 [2022-02-24 01:55:01,317 INFO L226 Difference]: Without dead ends: 124 [2022-02-24 01:55:01,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2022-02-24 01:55:01,319 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:55:01,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:55:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-24 01:55:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-02-24 01:55:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 120 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2022-02-24 01:55:01,329 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 120 [2022-02-24 01:55:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:55:01,329 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2022-02-24 01:55:01,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 112 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2022-02-24 01:55:01,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-24 01:55:01,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:55:01,329 INFO L514 BasicCegarLoop]: trace histogram [110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:55:01,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-02-24 01:55:01,330 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:55:01,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:55:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash -409946071, now seen corresponding path program 110 times [2022-02-24 01:55:01,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:55:01,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987552200] [2022-02-24 01:55:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:55:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:55:01,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:55:01,331 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:55:01,331 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:55:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:55:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:55:04,191 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:55:04,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987552200] [2022-02-24 01:55:04,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [987552200] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:55:04,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:55:04,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-02-24 01:55:04,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796742962] [2022-02-24 01:55:04,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:55:04,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-02-24 01:55:04,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:55:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-02-24 01:55:04,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6220, Invalid=6662, Unknown=0, NotChecked=0, Total=12882 [2022-02-24 01:55:04,194 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand has 114 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 113 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:55:09,806 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2022-02-24 01:55:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-24 01:55:09,806 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 113 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2022-02-24 01:55:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:55:09,807 INFO L225 Difference]: With dead ends: 131 [2022-02-24 01:55:09,807 INFO L226 Difference]: Without dead ends: 129 [2022-02-24 01:55:09,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6323 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=18874, Invalid=31526, Unknown=0, NotChecked=0, Total=50400 [2022-02-24 01:55:09,810 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:55:09,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:55:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-24 01:55:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2022-02-24 01:55:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.024793388429752) internal successors, (124), 122 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2022-02-24 01:55:09,822 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 120 [2022-02-24 01:55:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:55:09,822 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2022-02-24 01:55:09,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.0263157894736843) internal successors, (117), 113 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2022-02-24 01:55:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-24 01:55:09,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:55:09,823 INFO L514 BasicCegarLoop]: trace histogram [110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:55:09,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-02-24 01:55:09,823 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:55:09,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:55:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 176576758, now seen corresponding path program 110 times [2022-02-24 01:55:09,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:55:09,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316887828] [2022-02-24 01:55:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:55:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:55:09,824 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:55:09,824 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:55:09,824 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:55:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:55:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:55:13,459 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:55:13,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316887828] [2022-02-24 01:55:13,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [316887828] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:55:13,459 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:55:13,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-02-24 01:55:13,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913870474] [2022-02-24 01:55:13,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:55:13,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-02-24 01:55:13,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:55:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-02-24 01:55:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-02-24 01:55:13,460 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 114 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 113 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:55:17,695 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2022-02-24 01:55:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-24 01:55:17,696 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 113 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2022-02-24 01:55:17,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:55:17,696 INFO L225 Difference]: With dead ends: 129 [2022-02-24 01:55:17,696 INFO L226 Difference]: Without dead ends: 125 [2022-02-24 01:55:17,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2022-02-24 01:55:17,699 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:55:17,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:55:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-02-24 01:55:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-02-24 01:55:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2022-02-24 01:55:17,708 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 121 [2022-02-24 01:55:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:55:17,708 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2022-02-24 01:55:17,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 113 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2022-02-24 01:55:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-24 01:55:17,709 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:55:17,709 INFO L514 BasicCegarLoop]: trace histogram [111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:55:17,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-02-24 01:55:17,709 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:55:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:55:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash 176625577, now seen corresponding path program 111 times [2022-02-24 01:55:17,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:55:17,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950276101] [2022-02-24 01:55:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:55:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:55:17,710 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:55:17,710 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:55:17,710 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:55:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:21,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:55:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:55:21,791 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:55:21,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950276101] [2022-02-24 01:55:21,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [950276101] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:55:21,792 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:55:21,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-02-24 01:55:21,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398166994] [2022-02-24 01:55:21,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:55:21,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-02-24 01:55:21,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:55:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-02-24 01:55:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6332, Invalid=6778, Unknown=0, NotChecked=0, Total=13110 [2022-02-24 01:55:21,795 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand has 115 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 114 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:55:29,115 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2022-02-24 01:55:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-24 01:55:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 114 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2022-02-24 01:55:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:55:29,116 INFO L225 Difference]: With dead ends: 132 [2022-02-24 01:55:29,116 INFO L226 Difference]: Without dead ends: 130 [2022-02-24 01:55:29,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6436 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=19212, Invalid=32090, Unknown=0, NotChecked=0, Total=51302 [2022-02-24 01:55:29,119 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:55:29,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 01:55:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-02-24 01:55:29,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2022-02-24 01:55:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0245901639344261) internal successors, (125), 123 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2022-02-24 01:55:29,129 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 121 [2022-02-24 01:55:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:55:29,129 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2022-02-24 01:55:29,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 114 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2022-02-24 01:55:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-02-24 01:55:29,129 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:55:29,129 INFO L514 BasicCegarLoop]: trace histogram [111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:55:29,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-02-24 01:55:29,129 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:55:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:55:29,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1180428662, now seen corresponding path program 111 times [2022-02-24 01:55:29,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:55:29,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306628039] [2022-02-24 01:55:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:55:29,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:55:29,131 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:55:29,131 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:55:29,131 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:55:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:55:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:55:33,845 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:55:33,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306628039] [2022-02-24 01:55:33,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [306628039] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:55:33,846 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:55:33,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-02-24 01:55:33,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120214032] [2022-02-24 01:55:33,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:55:33,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-02-24 01:55:33,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:55:33,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-02-24 01:55:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-02-24 01:55:33,847 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 115 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 114 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:55:38,089 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2022-02-24 01:55:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-24 01:55:38,090 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 114 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2022-02-24 01:55:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:55:38,090 INFO L225 Difference]: With dead ends: 130 [2022-02-24 01:55:38,090 INFO L226 Difference]: Without dead ends: 126 [2022-02-24 01:55:38,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2022-02-24 01:55:38,094 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:55:38,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:55:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-24 01:55:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-02-24 01:55:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 122 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2022-02-24 01:55:38,108 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 122 [2022-02-24 01:55:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:55:38,108 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2022-02-24 01:55:38,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 114 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2022-02-24 01:55:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-02-24 01:55:38,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:55:38,109 INFO L514 BasicCegarLoop]: trace histogram [112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:55:38,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-02-24 01:55:38,109 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:55:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:55:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1180477481, now seen corresponding path program 112 times [2022-02-24 01:55:38,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:55:38,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733077164] [2022-02-24 01:55:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:55:38,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:55:38,110 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:55:38,110 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:55:38,110 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:55:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:55:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:55:42,818 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:55:42,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733077164] [2022-02-24 01:55:42,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [733077164] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:55:42,818 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:55:42,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-02-24 01:55:42,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072711799] [2022-02-24 01:55:42,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:55:42,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-02-24 01:55:42,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:55:42,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-02-24 01:55:42,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6445, Invalid=6895, Unknown=0, NotChecked=0, Total=13340 [2022-02-24 01:55:42,820 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand has 116 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 115 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:55:49,474 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2022-02-24 01:55:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-24 01:55:49,475 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 115 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2022-02-24 01:55:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:55:49,475 INFO L225 Difference]: With dead ends: 133 [2022-02-24 01:55:49,475 INFO L226 Difference]: Without dead ends: 131 [2022-02-24 01:55:49,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6550 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=19553, Invalid=32659, Unknown=0, NotChecked=0, Total=52212 [2022-02-24 01:55:49,478 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:55:49,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:55:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-24 01:55:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2022-02-24 01:55:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.024390243902439) internal successors, (126), 124 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2022-02-24 01:55:49,490 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 122 [2022-02-24 01:55:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:55:49,490 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2022-02-24 01:55:49,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 115 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2022-02-24 01:55:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-24 01:55:49,490 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:55:49,491 INFO L514 BasicCegarLoop]: trace histogram [112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:55:49,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-02-24 01:55:49,491 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:55:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:55:49,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2059900682, now seen corresponding path program 112 times [2022-02-24 01:55:49,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:55:49,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848085724] [2022-02-24 01:55:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:55:49,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:55:49,492 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:55:49,492 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:55:49,492 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:55:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:55:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:55:52,406 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:55:52,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848085724] [2022-02-24 01:55:52,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [848085724] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:55:52,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:55:52,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-02-24 01:55:52,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636421256] [2022-02-24 01:55:52,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:55:52,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-02-24 01:55:52,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:55:52,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-02-24 01:55:52,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-02-24 01:55:52,409 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 116 states, 116 states have (on average 1.0344827586206897) internal successors, (120), 115 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:55,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:55:55,488 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2022-02-24 01:55:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-24 01:55:55,488 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.0344827586206897) internal successors, (120), 115 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2022-02-24 01:55:55,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:55:55,488 INFO L225 Difference]: With dead ends: 131 [2022-02-24 01:55:55,488 INFO L226 Difference]: Without dead ends: 127 [2022-02-24 01:55:55,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2022-02-24 01:55:55,492 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:55:55,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 59 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:55:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-24 01:55:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-02-24 01:55:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 123 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2022-02-24 01:55:55,502 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 123 [2022-02-24 01:55:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:55:55,502 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2022-02-24 01:55:55,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.0344827586206897) internal successors, (120), 115 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:55:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2022-02-24 01:55:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-02-24 01:55:55,502 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:55:55,502 INFO L514 BasicCegarLoop]: trace histogram [113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:55:55,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-02-24 01:55:55,503 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:55:55,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:55:55,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2059851863, now seen corresponding path program 113 times [2022-02-24 01:55:55,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:55:55,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065245514] [2022-02-24 01:55:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:55:55,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:55:55,504 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:55:55,504 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:55:55,504 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:55:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:55:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:55:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:55:58,446 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:55:58,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065245514] [2022-02-24 01:55:58,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1065245514] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:55:58,447 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:55:58,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-02-24 01:55:58,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331507721] [2022-02-24 01:55:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:55:58,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-02-24 01:55:58,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:55:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-02-24 01:55:58,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6559, Invalid=7013, Unknown=0, NotChecked=0, Total=13572 [2022-02-24 01:55:58,449 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 117 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 116 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:56:04,207 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2022-02-24 01:56:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-24 01:56:04,208 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 116 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2022-02-24 01:56:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:56:04,208 INFO L225 Difference]: With dead ends: 134 [2022-02-24 01:56:04,208 INFO L226 Difference]: Without dead ends: 132 [2022-02-24 01:56:04,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6665 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=19897, Invalid=33233, Unknown=0, NotChecked=0, Total=53130 [2022-02-24 01:56:04,211 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:56:04,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:56:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-02-24 01:56:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2022-02-24 01:56:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 125 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2022-02-24 01:56:04,223 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 123 [2022-02-24 01:56:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:56:04,223 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2022-02-24 01:56:04,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 116 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2022-02-24 01:56:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-24 01:56:04,224 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:56:04,224 INFO L514 BasicCegarLoop]: trace histogram [113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:56:04,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-02-24 01:56:04,225 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:56:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:56:04,225 INFO L85 PathProgramCache]: Analyzing trace with hash 569104758, now seen corresponding path program 113 times [2022-02-24 01:56:04,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:56:04,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430270547] [2022-02-24 01:56:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:56:04,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:56:04,226 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:56:04,226 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:56:04,226 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:56:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:56:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:56:08,764 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:56:08,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430270547] [2022-02-24 01:56:08,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1430270547] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:56:08,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:56:08,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-02-24 01:56:08,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616856892] [2022-02-24 01:56:08,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:56:08,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-02-24 01:56:08,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:56:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-02-24 01:56:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-02-24 01:56:08,767 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 117 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 116 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:56:12,724 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2022-02-24 01:56:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-24 01:56:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 116 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2022-02-24 01:56:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:56:12,725 INFO L225 Difference]: With dead ends: 132 [2022-02-24 01:56:12,725 INFO L226 Difference]: Without dead ends: 128 [2022-02-24 01:56:12,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2022-02-24 01:56:12,727 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:56:12,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:56:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-02-24 01:56:12,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-02-24 01:56:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2022-02-24 01:56:12,737 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 124 [2022-02-24 01:56:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:56:12,737 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2022-02-24 01:56:12,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 116 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2022-02-24 01:56:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-02-24 01:56:12,737 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:56:12,737 INFO L514 BasicCegarLoop]: trace histogram [114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:56:12,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-02-24 01:56:12,738 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:56:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:56:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash 569153577, now seen corresponding path program 114 times [2022-02-24 01:56:12,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:56:12,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160919080] [2022-02-24 01:56:12,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:56:12,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:56:12,739 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:56:12,739 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:56:12,739 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:56:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:56:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:56:15,659 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:56:15,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160919080] [2022-02-24 01:56:15,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [160919080] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:56:15,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:56:15,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-02-24 01:56:15,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546508004] [2022-02-24 01:56:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:56:15,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-02-24 01:56:15,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:56:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-02-24 01:56:15,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6674, Invalid=7132, Unknown=0, NotChecked=0, Total=13806 [2022-02-24 01:56:15,662 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand has 118 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 117 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:56:22,039 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2022-02-24 01:56:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-24 01:56:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 117 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2022-02-24 01:56:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:56:22,040 INFO L225 Difference]: With dead ends: 135 [2022-02-24 01:56:22,040 INFO L226 Difference]: Without dead ends: 133 [2022-02-24 01:56:22,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6781 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=20244, Invalid=33812, Unknown=0, NotChecked=0, Total=54056 [2022-02-24 01:56:22,042 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:56:22,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 68 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 01:56:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-02-24 01:56:22,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2022-02-24 01:56:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 126 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2022-02-24 01:56:22,052 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 124 [2022-02-24 01:56:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:56:22,052 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2022-02-24 01:56:22,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 117 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2022-02-24 01:56:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-24 01:56:22,053 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:56:22,053 INFO L514 BasicCegarLoop]: trace histogram [114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:56:22,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-02-24 01:56:22,053 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:56:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:56:22,053 INFO L85 PathProgramCache]: Analyzing trace with hash 463894774, now seen corresponding path program 114 times [2022-02-24 01:56:22,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:56:22,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690693729] [2022-02-24 01:56:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:56:22,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:56:22,054 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:56:22,055 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:56:22,055 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:56:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:56:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:56:27,005 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:56:27,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690693729] [2022-02-24 01:56:27,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1690693729] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:56:27,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:56:27,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-02-24 01:56:27,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679433013] [2022-02-24 01:56:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:56:27,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-02-24 01:56:27,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:56:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-02-24 01:56:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-02-24 01:56:27,007 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand has 118 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 117 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:56:30,236 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2022-02-24 01:56:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-24 01:56:30,236 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 117 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2022-02-24 01:56:30,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:56:30,236 INFO L225 Difference]: With dead ends: 133 [2022-02-24 01:56:30,236 INFO L226 Difference]: Without dead ends: 129 [2022-02-24 01:56:30,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2022-02-24 01:56:30,240 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:56:30,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:56:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-24 01:56:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-02-24 01:56:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2022-02-24 01:56:30,250 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 125 [2022-02-24 01:56:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:56:30,250 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2022-02-24 01:56:30,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 117 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2022-02-24 01:56:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-02-24 01:56:30,250 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:56:30,250 INFO L514 BasicCegarLoop]: trace histogram [115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:56:30,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-02-24 01:56:30,250 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:56:30,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:56:30,251 INFO L85 PathProgramCache]: Analyzing trace with hash 463943593, now seen corresponding path program 115 times [2022-02-24 01:56:30,251 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:56:30,251 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479972078] [2022-02-24 01:56:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:56:30,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:56:30,270 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:56:30,270 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:56:30,270 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:56:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:56:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:56:35,149 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:56:35,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479972078] [2022-02-24 01:56:35,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1479972078] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:56:35,150 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:56:35,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-02-24 01:56:35,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442242273] [2022-02-24 01:56:35,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:56:35,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-02-24 01:56:35,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:56:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-02-24 01:56:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6790, Invalid=7252, Unknown=0, NotChecked=0, Total=14042 [2022-02-24 01:56:35,152 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand has 119 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 118 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:56:40,829 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2022-02-24 01:56:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-24 01:56:40,829 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 118 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2022-02-24 01:56:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:56:40,830 INFO L225 Difference]: With dead ends: 136 [2022-02-24 01:56:40,830 INFO L226 Difference]: Without dead ends: 134 [2022-02-24 01:56:40,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6898 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=20594, Invalid=34396, Unknown=0, NotChecked=0, Total=54990 [2022-02-24 01:56:40,833 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:56:40,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:56:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-24 01:56:40,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2022-02-24 01:56:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 127 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2022-02-24 01:56:40,843 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 125 [2022-02-24 01:56:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:56:40,843 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2022-02-24 01:56:40,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 118 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2022-02-24 01:56:40,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-24 01:56:40,843 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:56:40,843 INFO L514 BasicCegarLoop]: trace histogram [115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:56:40,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-02-24 01:56:40,844 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:56:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:56:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1497352566, now seen corresponding path program 115 times [2022-02-24 01:56:40,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:56:40,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870646808] [2022-02-24 01:56:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:56:40,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:56:40,845 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:56:40,845 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:56:40,845 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:56:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:56:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:56:43,904 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:56:43,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870646808] [2022-02-24 01:56:43,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1870646808] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:56:43,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:56:43,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-02-24 01:56:43,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305442332] [2022-02-24 01:56:43,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:56:43,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-02-24 01:56:43,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:56:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-02-24 01:56:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-02-24 01:56:43,906 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 119 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 118 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:56:48,380 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2022-02-24 01:56:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-24 01:56:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 118 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2022-02-24 01:56:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:56:48,380 INFO L225 Difference]: With dead ends: 134 [2022-02-24 01:56:48,380 INFO L226 Difference]: Without dead ends: 130 [2022-02-24 01:56:48,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2022-02-24 01:56:48,384 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:56:48,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:56:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-02-24 01:56:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-02-24 01:56:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2022-02-24 01:56:48,394 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 126 [2022-02-24 01:56:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:56:48,395 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2022-02-24 01:56:48,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 118 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:56:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2022-02-24 01:56:48,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-24 01:56:48,395 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:56:48,395 INFO L514 BasicCegarLoop]: trace histogram [116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:56:48,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-02-24 01:56:48,395 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:56:48,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:56:48,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1497401385, now seen corresponding path program 116 times [2022-02-24 01:56:48,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:56:48,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075859921] [2022-02-24 01:56:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:56:48,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:56:48,397 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:56:48,397 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:56:48,397 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:56:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:56:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:56:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:56:53,549 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:56:53,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075859921] [2022-02-24 01:56:53,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2075859921] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:56:53,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:56:53,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-02-24 01:56:53,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63208477] [2022-02-24 01:56:53,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:56:53,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-02-24 01:56:53,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:56:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-02-24 01:56:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6907, Invalid=7373, Unknown=0, NotChecked=0, Total=14280 [2022-02-24 01:56:53,552 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand has 120 states, 120 states have (on average 1.025) internal successors, (123), 119 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:57:00,214 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2022-02-24 01:57:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-24 01:57:00,214 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.025) internal successors, (123), 119 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2022-02-24 01:57:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:57:00,215 INFO L225 Difference]: With dead ends: 137 [2022-02-24 01:57:00,215 INFO L226 Difference]: Without dead ends: 135 [2022-02-24 01:57:00,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7016 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=20947, Invalid=34985, Unknown=0, NotChecked=0, Total=55932 [2022-02-24 01:57:00,218 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:57:00,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 68 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 01:57:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-02-24 01:57:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2022-02-24 01:57:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 128 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2022-02-24 01:57:00,228 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 126 [2022-02-24 01:57:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:57:00,228 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2022-02-24 01:57:00,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 1.025) internal successors, (123), 119 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2022-02-24 01:57:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-02-24 01:57:00,229 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:57:00,229 INFO L514 BasicCegarLoop]: trace histogram [116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:57:00,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-02-24 01:57:00,229 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:57:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:57:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash -825194250, now seen corresponding path program 116 times [2022-02-24 01:57:00,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:57:00,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834238526] [2022-02-24 01:57:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:57:00,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:57:00,230 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:57:00,230 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:57:00,231 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:57:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:57:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:57:03,565 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:57:03,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834238526] [2022-02-24 01:57:03,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1834238526] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:57:03,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:57:03,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-02-24 01:57:03,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996382017] [2022-02-24 01:57:03,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:57:03,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-02-24 01:57:03,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:57:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-02-24 01:57:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-02-24 01:57:03,568 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 120 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 119 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:57:08,098 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2022-02-24 01:57:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-24 01:57:08,098 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 119 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2022-02-24 01:57:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:57:08,099 INFO L225 Difference]: With dead ends: 135 [2022-02-24 01:57:08,099 INFO L226 Difference]: Without dead ends: 131 [2022-02-24 01:57:08,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2022-02-24 01:57:08,102 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:57:08,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:57:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-24 01:57:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-02-24 01:57:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 127 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2022-02-24 01:57:08,112 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 127 [2022-02-24 01:57:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:57:08,112 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2022-02-24 01:57:08,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 119 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2022-02-24 01:57:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-02-24 01:57:08,113 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:57:08,113 INFO L514 BasicCegarLoop]: trace histogram [117, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:57:08,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-02-24 01:57:08,113 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:57:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:57:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash -825145431, now seen corresponding path program 117 times [2022-02-24 01:57:08,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:57:08,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055714823] [2022-02-24 01:57:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:57:08,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:57:08,115 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:57:08,115 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:57:08,115 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:57:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:57:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:57:11,956 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:57:11,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055714823] [2022-02-24 01:57:11,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1055714823] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:57:11,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:57:11,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-02-24 01:57:11,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066823122] [2022-02-24 01:57:11,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:57:11,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-02-24 01:57:11,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:57:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-02-24 01:57:11,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7025, Invalid=7495, Unknown=0, NotChecked=0, Total=14520 [2022-02-24 01:57:11,959 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 121 states, 121 states have (on average 1.024793388429752) internal successors, (124), 120 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:57:18,805 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2022-02-24 01:57:18,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-02-24 01:57:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 1.024793388429752) internal successors, (124), 120 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2022-02-24 01:57:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:57:18,806 INFO L225 Difference]: With dead ends: 138 [2022-02-24 01:57:18,806 INFO L226 Difference]: Without dead ends: 136 [2022-02-24 01:57:18,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7135 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=21303, Invalid=35579, Unknown=0, NotChecked=0, Total=56882 [2022-02-24 01:57:18,809 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:57:18,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:57:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-02-24 01:57:18,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2022-02-24 01:57:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.0234375) internal successors, (131), 129 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2022-02-24 01:57:18,819 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 127 [2022-02-24 01:57:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:57:18,819 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2022-02-24 01:57:18,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 1.024793388429752) internal successors, (124), 120 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2022-02-24 01:57:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-24 01:57:18,820 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:57:18,820 INFO L514 BasicCegarLoop]: trace histogram [117, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:57:18,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-02-24 01:57:18,820 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:57:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:57:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash 190298486, now seen corresponding path program 117 times [2022-02-24 01:57:18,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:57:18,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881793581] [2022-02-24 01:57:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:57:18,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:57:18,821 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:57:18,821 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:57:18,822 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:57:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:23,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:57:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:57:23,881 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:57:23,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881793581] [2022-02-24 01:57:23,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1881793581] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:57:23,881 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:57:23,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-02-24 01:57:23,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520104775] [2022-02-24 01:57:23,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:57:23,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-02-24 01:57:23,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:57:23,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-02-24 01:57:23,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-02-24 01:57:23,885 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand has 121 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 120 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:57:27,395 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2022-02-24 01:57:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-02-24 01:57:27,395 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 120 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2022-02-24 01:57:27,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:57:27,396 INFO L225 Difference]: With dead ends: 136 [2022-02-24 01:57:27,396 INFO L226 Difference]: Without dead ends: 132 [2022-02-24 01:57:27,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2022-02-24 01:57:27,399 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:57:27,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:57:27,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-02-24 01:57:27,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-02-24 01:57:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.015748031496063) internal successors, (129), 128 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2022-02-24 01:57:27,410 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 128 [2022-02-24 01:57:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:57:27,410 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2022-02-24 01:57:27,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 120 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2022-02-24 01:57:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-24 01:57:27,410 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:57:27,410 INFO L514 BasicCegarLoop]: trace histogram [118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:57:27,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-02-24 01:57:27,411 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:57:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:57:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash 190347305, now seen corresponding path program 118 times [2022-02-24 01:57:27,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:57:27,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518987820] [2022-02-24 01:57:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:57:27,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:57:27,412 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:57:27,412 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:57:27,412 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:57:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:57:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:57:30,730 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:57:30,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518987820] [2022-02-24 01:57:30,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1518987820] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:57:30,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:57:30,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-02-24 01:57:30,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655932275] [2022-02-24 01:57:30,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:57:30,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-02-24 01:57:30,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:57:30,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-02-24 01:57:30,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7144, Invalid=7618, Unknown=0, NotChecked=0, Total=14762 [2022-02-24 01:57:30,732 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand has 122 states, 122 states have (on average 1.0245901639344261) internal successors, (125), 121 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:57:39,140 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2022-02-24 01:57:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-02-24 01:57:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.0245901639344261) internal successors, (125), 121 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2022-02-24 01:57:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:57:39,141 INFO L225 Difference]: With dead ends: 139 [2022-02-24 01:57:39,141 INFO L226 Difference]: Without dead ends: 137 [2022-02-24 01:57:39,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7255 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=21662, Invalid=36178, Unknown=0, NotChecked=0, Total=57840 [2022-02-24 01:57:39,144 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:57:39,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 01:57:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-24 01:57:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2022-02-24 01:57:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 130 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2022-02-24 01:57:39,159 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 128 [2022-02-24 01:57:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:57:39,159 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2022-02-24 01:57:39,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.0245901639344261) internal successors, (125), 121 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2022-02-24 01:57:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-24 01:57:39,160 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:57:39,160 INFO L514 BasicCegarLoop]: trace histogram [118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:57:39,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-02-24 01:57:39,160 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:57:39,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:57:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1605802230, now seen corresponding path program 118 times [2022-02-24 01:57:39,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:57:39,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624531077] [2022-02-24 01:57:39,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:57:39,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:57:39,162 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:57:39,162 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:57:39,162 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:57:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:57:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:57:44,730 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:57:44,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624531077] [2022-02-24 01:57:44,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1624531077] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:57:44,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:57:44,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-02-24 01:57:44,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421828776] [2022-02-24 01:57:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:57:44,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-02-24 01:57:44,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:57:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-02-24 01:57:44,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-02-24 01:57:44,732 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand has 122 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 121 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:57:48,256 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2022-02-24 01:57:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-02-24 01:57:48,256 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 121 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2022-02-24 01:57:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:57:48,257 INFO L225 Difference]: With dead ends: 137 [2022-02-24 01:57:48,257 INFO L226 Difference]: Without dead ends: 133 [2022-02-24 01:57:48,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2022-02-24 01:57:48,261 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:57:48,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:57:48,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-02-24 01:57:48,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-02-24 01:57:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.015625) internal successors, (130), 129 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2022-02-24 01:57:48,272 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 129 [2022-02-24 01:57:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:57:48,273 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2022-02-24 01:57:48,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 121 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2022-02-24 01:57:48,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-02-24 01:57:48,273 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:57:48,273 INFO L514 BasicCegarLoop]: trace histogram [119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:57:48,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-02-24 01:57:48,273 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:57:48,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:57:48,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1605851049, now seen corresponding path program 119 times [2022-02-24 01:57:48,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:57:48,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281186413] [2022-02-24 01:57:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:57:48,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:57:48,275 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:57:48,275 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:57:48,275 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:57:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:52,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:57:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:57:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:57:52,035 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:57:52,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281186413] [2022-02-24 01:57:52,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [281186413] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:57:52,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:57:52,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-02-24 01:57:52,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038824073] [2022-02-24 01:57:52,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:57:52,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-02-24 01:57:52,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:57:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-02-24 01:57:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7264, Invalid=7742, Unknown=0, NotChecked=0, Total=15006 [2022-02-24 01:57:52,039 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand has 123 states, 123 states have (on average 1.024390243902439) internal successors, (126), 122 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:58,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:57:58,377 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2022-02-24 01:57:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-02-24 01:57:58,378 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.024390243902439) internal successors, (126), 122 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2022-02-24 01:57:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:57:58,378 INFO L225 Difference]: With dead ends: 140 [2022-02-24 01:57:58,378 INFO L226 Difference]: Without dead ends: 138 [2022-02-24 01:57:58,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7376 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=22024, Invalid=36782, Unknown=0, NotChecked=0, Total=58806 [2022-02-24 01:57:58,381 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:57:58,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:57:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-02-24 01:57:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2022-02-24 01:57:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.023076923076923) internal successors, (133), 131 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2022-02-24 01:57:58,391 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 129 [2022-02-24 01:57:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:57:58,391 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2022-02-24 01:57:58,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.024390243902439) internal successors, (126), 122 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:57:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2022-02-24 01:57:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-24 01:57:58,392 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:57:58,392 INFO L514 BasicCegarLoop]: trace histogram [119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:57:58,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-02-24 01:57:58,392 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:57:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:57:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1758221962, now seen corresponding path program 119 times [2022-02-24 01:57:58,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:57:58,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081407858] [2022-02-24 01:57:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:57:58,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:57:58,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:57:58,393 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:57:58,394 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:57:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:58:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:58:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:58:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:58:03,598 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:58:03,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081407858] [2022-02-24 01:58:03,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1081407858] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:58:03,598 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:58:03,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-02-24 01:58:03,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036363337] [2022-02-24 01:58:03,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:58:03,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-02-24 01:58:03,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:58:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-02-24 01:58:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-02-24 01:58:03,601 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 123 states, 123 states have (on average 1.032520325203252) internal successors, (127), 122 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:58:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:58:08,285 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2022-02-24 01:58:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-02-24 01:58:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.032520325203252) internal successors, (127), 122 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2022-02-24 01:58:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:58:08,286 INFO L225 Difference]: With dead ends: 138 [2022-02-24 01:58:08,286 INFO L226 Difference]: Without dead ends: 134 [2022-02-24 01:58:08,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2022-02-24 01:58:08,288 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-24 01:58:08,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-24 01:58:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-24 01:58:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-02-24 01:58:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:58:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2022-02-24 01:58:08,298 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 130 [2022-02-24 01:58:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:58:08,299 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2022-02-24 01:58:08,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.032520325203252) internal successors, (127), 122 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:58:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2022-02-24 01:58:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-24 01:58:08,299 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:58:08,299 INFO L514 BasicCegarLoop]: trace histogram [120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:58:08,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-02-24 01:58:08,299 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:58:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:58:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1758173143, now seen corresponding path program 120 times [2022-02-24 01:58:08,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:58:08,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940793322] [2022-02-24 01:58:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:58:08,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:58:08,301 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:58:08,301 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:58:08,301 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:58:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:58:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 01:58:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 01:58:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 01:58:13,210 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 01:58:13,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940793322] [2022-02-24 01:58:13,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1940793322] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 01:58:13,210 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 01:58:13,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-02-24 01:58:13,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915304199] [2022-02-24 01:58:13,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 01:58:13,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-02-24 01:58:13,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 01:58:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-02-24 01:58:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7385, Invalid=7867, Unknown=0, NotChecked=0, Total=15252 [2022-02-24 01:58:13,213 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 124 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 123 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:58:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 01:58:20,100 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2022-02-24 01:58:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-02-24 01:58:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 123 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2022-02-24 01:58:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 01:58:20,101 INFO L225 Difference]: With dead ends: 141 [2022-02-24 01:58:20,101 INFO L226 Difference]: Without dead ends: 139 [2022-02-24 01:58:20,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7498 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=22389, Invalid=37391, Unknown=0, NotChecked=0, Total=59780 [2022-02-24 01:58:20,104 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 01:58:20,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 01:58:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-02-24 01:58:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2022-02-24 01:58:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 132 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:58:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-02-24 01:58:20,114 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 130 [2022-02-24 01:58:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 01:58:20,114 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-02-24 01:58:20,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 123 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-24 01:58:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-02-24 01:58:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-02-24 01:58:20,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 01:58:20,115 INFO L514 BasicCegarLoop]: trace histogram [120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 01:58:20,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-02-24 01:58:20,115 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 01:58:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 01:58:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1331210486, now seen corresponding path program 120 times [2022-02-24 01:58:20,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 01:58:20,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142593876] [2022-02-24 01:58:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 01:58:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 01:58:20,116 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 01:58:20,116 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-02-24 01:58:20,117 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 01:58:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat